{"id":1071,"date":"2026-09-22T03:15:44","date_gmt":"2026-09-22T03:15:44","guid":{"rendered":"https:\/\/wdlvalve.com\/?p=1071"},"modified":"2026-09-22T03:15:44","modified_gmt":"2026-09-22T03:15:44","slug":"%d8%b5%d9%85%d8%a7%d9%85%d8%a7%d8%aa-%d8%a7%d9%84%d9%86%d9%81%d8%b7-%d9%88%d8%a7%d9%84%d8%ba%d8%a7%d8%b2-%d8%a7%d9%84%d8%a8%d8%b1%d9%8a%d8%a9","status":"publish","type":"post","link":"https:\/\/wdlvalve.com\/ar\/%d8%b5%d9%85%d8%a7%d9%85%d8%a7%d8%aa-%d8%a7%d9%84%d9%86%d9%81%d8%b7-%d9%88%d8%a7%d9%84%d8%ba%d8%a7%d8%b2-%d8%a7%d9%84%d8%a8%d8%b1%d9%8a%d8%a9\/","title":{"rendered":"\u0635\u0645\u0627\u0645\u0627\u062a \u0627\u0644\u0646\u0641\u0637 \u0648\u0627\u0644\u063a\u0627\u0632 \u0627\u0644\u0628\u0631\u064a\u0629: \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a \u0648\u0627\u0644\u0645\u0648\u0627\u062f \u0648\u062f\u0644\u064a\u0644 \u0627\u0644\u0627\u062e\u062a\u064a\u0627\u0631"},"content":{"rendered":"<article style=\"width: 100%; max-width: 1180px; margin: 0 auto; padding: 24px 16px; color: #283946; background: #ffffff; font-family: Arial,Helvetica,sans-serif; font-size: 17px; line-height: 1.75; box-sizing: border-box;\">\n<header>\n<div style=\"margin: 0 0 28px; padding: 26px 28px; color: #17394d; background: #edf8fb; border-left: 5px solid #148ba6; border-radius: 5px;\">\n<p style=\"margin: 0; font-size: 18px;\">Onshore oil and gas valves isolate, throttle and prevent reverse<br \/>\nflow in gathering, processing, transmission and storage systems.<br \/>\nWDL Valve supplies ball, gate, globe, check and control valves for<br \/>\ncrude oil, natural gas, condensate, produced water and utility<br \/>\nservices.<\/p>\n<\/div>\n<\/header>\n<section style=\"margin: 28px 0; padding: 22px 25px; background: #f6f9fb; border: 1px solid #aebfc9; border-radius: 7px;\">\n<p style=\"margin: 0;\"><strong>What are onshore oil and gas valves?<\/strong><br \/>\nOnshore oil and gas valves are pressure-containing components used to<br \/>\nstart, stop, regulate or prevent reverse flow in land-based production,<br \/>\nprocessing, pipeline and storage facilities. Valve type, pressure<br \/>\nclass, material, seat design and actuation method must match the medium,<br \/>\noperating pressure, temperature, corrosion risk and required shutoff<br \/>\nperformance.<\/p>\n<\/section>\n<nav style=\"margin: 32px 0 40px; padding: 24px 28px; background: #f7fafc; border: 1px solid #aebfc9; border-radius: 7px;\" aria-label=\"Article contents\"><strong style=\"display: block; margin-bottom: 12px; color: #123f61; font-size: 22px;\"><br \/>\nContents<br \/>\n<\/strong><\/p>\n<ol style=\"margin: 0; padding-left: 24px;\">\n<li style=\"margin-bottom: 8px;\"><a style=\"color: #087d9d;\" href=\"#onshore-applications\">Where are valves used in onshore oil and gas systems?<br \/>\n<\/a><\/li>\n<li style=\"margin-bottom: 8px;\"><a style=\"color: #087d9d;\" href=\"#valve-types\">Which valve types are commonly used?<br \/>\n<\/a><\/li>\n<li style=\"margin-bottom: 8px;\"><a style=\"color: #087d9d;\" href=\"#valve-materials\">How are valve materials selected?<br \/>\n<\/a><\/li>\n<li style=\"margin-bottom: 8px;\"><a style=\"color: #087d9d;\" href=\"#seat-selection\">Soft seat or metal seat?<br \/>\n<\/a><\/li>\n<li style=\"margin-bottom: 8px;\"><a style=\"color: #087d9d;\" href=\"#oil-gas-standards\">Which valve standards apply?<br \/>\n<\/a><\/li>\n<li style=\"margin-bottom: 8px;\"><a style=\"color: #087d9d;\" href=\"#selection-process\">How to select an onshore oil and gas valve<br \/>\n<\/a><\/li>\n<li style=\"margin-bottom: 8px;\"><a style=\"color: #087d9d;\" href=\"#quotation-information\">Information required for quotation<br \/>\n<\/a><\/li>\n<li><a style=\"color: #087d9d;\" href=\"#oil-gas-faq\">Frequently asked questions<br \/>\n<\/a><\/li>\n<\/ol>\n<\/nav>\n<p>&nbsp;<\/p>\n<section id=\"onshore-applications\">\n<h2 style=\"margin: 48px 0 20px; padding-bottom: 10px; color: #123f61; font-size: 30px; line-height: 1.3; border-bottom: 3px solid #148ba6;\">Where Are Valves Used in Onshore Oil and Gas Systems?<\/h2>\n<p style=\"margin: 0 0 20px;\">Onshore oil and gas valves are installed between the well site and<br \/>\nthe final pipeline, terminal or storage facility. Each location<br \/>\ncreates different requirements for pressure containment, shutoff,<br \/>\nerosion resistance, corrosion control and automation.<\/p>\n<div style=\"display: block; width: 100%; max-width: 100%; margin: 24px 0 34px; overflow-x: auto; overflow-y: hidden; border: 2px solid #344955; border-radius: 4px; -webkit-overflow-scrolling: touch;\" tabindex=\"0\" role=\"region\" aria-label=\"Onshore oil and gas valve applications\">\n<table style=\"width: 100%; min-width: 850px; margin: 0; border: 0; border-collapse: collapse; border-spacing: 0; background: #ffffff;\">\n<thead>\n<tr>\n<th style=\"padding: 14px; border: 1px solid #344955; color: #ffffff; background: #123f61; text-align: left; vertical-align: top;\" scope=\"col\">System Area<\/th>\n<th style=\"padding: 14px; border: 1px solid #344955; color: #ffffff; background: #123f61; text-align: left; vertical-align: top;\" scope=\"col\">Valve Function<\/th>\n<th style=\"padding: 14px; border: 1px solid #344955; color: #ffffff; background: #123f61; text-align: left; vertical-align: top;\" scope=\"col\">Typical Media<\/th>\n<th style=\"padding: 14px; border: 1px solid #344955; color: #ffffff; background: #123f61; text-align: left; vertical-align: top;\" scope=\"col\">Common Valve Types<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"padding: 14px; border: 1px solid #344955; vertical-align: top;\">Wellhead and gathering<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955; vertical-align: top;\">Isolation, emergency shutoff and flow routing<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955; vertical-align: top;\">Crude oil, natural gas, condensate and produced water<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955; vertical-align: top;\">Ball, gate, check and choke valves<\/td>\n<\/tr>\n<tr style=\"background: #edf5f8;\">\n<td style=\"padding: 14px; border: 1px solid #344955; vertical-align: top;\">Separation and processing<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955; vertical-align: top;\">Isolation, pressure control and liquid-level control<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955; vertical-align: top;\">Oil, gas, water, vapor and mixed-phase fluids<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955; vertical-align: top;\">Ball, globe, control and check valves<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 14px; border: 1px solid #344955; vertical-align: top;\">Gas treatment<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955; vertical-align: top;\">Isolation, bypass and process control<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955; vertical-align: top;\">Natural gas, acid gas, amine and condensate<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955; vertical-align: top;\">Ball, gate, globe and control valves<\/td>\n<\/tr>\n<tr style=\"background: #edf5f8;\">\n<td style=\"padding: 14px; border: 1px solid #344955; vertical-align: top;\">Transmission pipelines<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955; vertical-align: top;\">Mainline isolation, sectioning and backflow prevention<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955; vertical-align: top;\">Stabilized crude oil, natural gas and refined products<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955; vertical-align: top;\">Trunnion ball, through-conduit gate and check valves<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 14px; border: 1px solid #344955; vertical-align: top;\">Compressor and pump stations<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955; vertical-align: top;\">Equipment isolation, bypass and reverse-flow protection<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955; vertical-align: top;\">High-pressure gas, crude oil and utility fluids<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955; vertical-align: top;\">Ball, gate, globe, control and check valves<\/td>\n<\/tr>\n<tr style=\"background: #edf5f8;\">\n<td style=\"padding: 14px; border: 1px solid #344955; vertical-align: top;\">Storage and loading<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955; vertical-align: top;\">Tank isolation, transfer and loading control<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955; vertical-align: top;\">Crude oil, condensate, fuel and drain fluids<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955; vertical-align: top;\">Ball, gate, butterfly and check valves<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 14px; border: 1px solid #344955; vertical-align: top;\">Utility systems<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955; vertical-align: top;\">Isolation and flow regulation<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955; vertical-align: top;\">Cooling water, steam, fuel gas, air and nitrogen<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955; vertical-align: top;\">Butterfly, ball, gate, globe and check valves<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/section>\n<section id=\"valve-types\">\n<h2 style=\"margin: 48px 0 20px; padding-bottom: 10px; color: #123f61; font-size: 30px; line-height: 1.3; border-bottom: 3px solid #148ba6;\">Which Valve Types Are Used in Onshore Oil and Gas Facilities?<\/h2>\n<h3 style=\"margin: 28px 0 12px; color: #123f61; font-size: 22px;\">Ball Valves<\/h3>\n<p style=\"margin: 0 0 20px;\">Ball valves provide quarter-turn operation, low flow resistance and<br \/>\nreliable isolation. Floating ball valves are commonly used in<br \/>\nsmaller sizes, while trunnion-mounted ball valves are preferred for<br \/>\nlarger sizes, higher pressure classes and pipeline service. Full-bore<br \/>\ndesigns may be specified where pigging or minimum pressure loss is<br \/>\nrequired.<\/p>\n<h3 style=\"margin: 28px 0 12px; color: #123f61; font-size: 22px;\">Gate Valves<\/h3>\n<p style=\"margin: 0 0 20px;\">Gate valves provide a straight flow path and low pressure loss when<br \/>\nfully open. Slab gate and expanding gate designs are used in pipeline<br \/>\nand terminal service, while wedge gate valves are common in process<br \/>\nand utility piping. Gate valves are normally selected for isolation,<br \/>\nnot continuous throttling.<\/p>\n<h3 style=\"margin: 28px 0 12px; color: #123f61; font-size: 22px;\">Globe Valves<\/h3>\n<p style=\"margin: 0 0 20px;\">Globe valves are used for manual throttling, bypass lines, drains and<br \/>\nservices where flow adjustment is more important than minimum<br \/>\npressure loss. Disc and seat materials should be selected for the<br \/>\nexpected pressure drop, velocity and operating frequency.<\/p>\n<h3 style=\"margin: 28px 0 12px; color: #123f61; font-size: 22px;\">Check Valves<\/h3>\n<p style=\"margin: 0 0 20px;\">Check valves prevent reverse flow through pumps, compressors and<br \/>\nprocess equipment. Swing, piston, dual-plate and axial-flow designs<br \/>\nprovide different combinations of pressure loss, closing speed and<br \/>\nresistance to flow-induced movement.<\/p>\n<h3 style=\"margin: 28px 0 12px; color: #123f61; font-size: 22px;\">Control Valves<\/h3>\n<p style=\"margin: 0 0 20px;\">Control valves regulate pressure, flow, temperature or liquid level.<br \/>\nThe valve must be sized using the minimum, normal and maximum process<br \/>\nconditions. Trim design should also account for cavitation, flashing,<br \/>\nerosion, noise and gas velocity.<\/p>\n<h3 style=\"margin: 28px 0 12px; color: #123f61; font-size: 22px;\">Butterfly Valves<\/h3>\n<p style=\"margin: 0 0 20px;\">Butterfly valves offer compact dimensions and lower weight in<br \/>\nlarge-diameter utility, cooling-water and low-pressure hydrocarbon<br \/>\nlines. High-performance or triple-offset designs may be specified<br \/>\nwhen the application requires higher pressure, temperature or<br \/>\nimproved shutoff performance.<\/p>\n<div style=\"display: block; width: 100%; max-width: 100%; margin: 24px 0 34px; overflow-x: auto; overflow-y: hidden; border: 2px solid #344955; border-radius: 4px; -webkit-overflow-scrolling: touch;\" tabindex=\"0\" role=\"region\" aria-label=\"Oil and gas valve type comparison\">\n<table style=\"width: 100%; min-width: 850px; margin: 0; border: 0; border-collapse: collapse; border-spacing: 0; background: #ffffff;\">\n<thead>\n<tr>\n<th style=\"padding: 14px; border: 1px solid #344955; color: #ffffff; background: #123f61; text-align: left;\" scope=\"col\">Valve Type<\/th>\n<th style=\"padding: 14px; border: 1px solid #344955; color: #ffffff; background: #123f61; text-align: left;\" scope=\"col\">Primary Function<\/th>\n<th style=\"padding: 14px; border: 1px solid #344955; color: #ffffff; background: #123f61; text-align: left;\" scope=\"col\">Main Advantage<\/th>\n<th style=\"padding: 14px; border: 1px solid #344955; color: #ffffff; background: #123f61; text-align: left;\" scope=\"col\">Selection Limitation<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"padding: 14px; border: 1px solid #344955;\">Ball valve<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955;\">Isolation and emergency shutoff<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955;\">Tight shutoff and low pressure loss<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955;\">Seat compatibility and cavity pressure must be checked<\/td>\n<\/tr>\n<tr style=\"background: #edf5f8;\">\n<td style=\"padding: 14px; border: 1px solid #344955;\">Gate valve<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955;\">Full-open or full-closed isolation<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955;\">Straight flow path<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955;\">Not normally suitable for throttling<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 14px; border: 1px solid #344955;\">Globe valve<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955;\">Manual throttling and isolation<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955;\">Good flow-adjustment capability<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955;\">Higher pressure drop than ball or gate valves<\/td>\n<\/tr>\n<tr style=\"background: #edf5f8;\">\n<td style=\"padding: 14px; border: 1px solid #344955;\">Check valve<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955;\">Reverse-flow prevention<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955;\">Automatic operation without an actuator<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955;\">Must be matched to flow velocity and system dynamics<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 14px; border: 1px solid #344955;\">Control valve<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955;\">Automatic process regulation<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955;\">Accurate control of changing process conditions<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955;\">Requires process sizing and trim evaluation<\/td>\n<\/tr>\n<tr style=\"background: #edf5f8;\">\n<td style=\"padding: 14px; border: 1px solid #344955;\">Butterfly valve<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955;\">Isolation and flow control<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955;\">Compact and economical in large sizes<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955;\">Disc remains in the flow path<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/section>\n<section id=\"valve-materials\">\n<h2 style=\"margin: 48px 0 20px; padding-bottom: 10px; color: #123f61; font-size: 30px; line-height: 1.3; border-bottom: 3px solid #148ba6;\">How Are Materials Selected for Onshore Oil and Gas Valves?<\/h2>\n<p style=\"margin: 0 0 20px;\">Onshore oil and gas valve materials are selected from the complete<br \/>\nprocess conditions rather than pressure class alone. The material<br \/>\nreview should include temperature, fluid composition, hydrogen<br \/>\nsulfide, carbon dioxide, chlorides, water content, solids, velocity<br \/>\nand expected corrosion allowance.<\/p>\n<div style=\"display: block; width: 100%; max-width: 100%; margin: 24px 0 34px; overflow-x: auto; overflow-y: hidden; border: 2px solid #344955; border-radius: 4px; -webkit-overflow-scrolling: touch;\" tabindex=\"0\" role=\"region\" aria-label=\"Oil and gas valve material comparison\">\n<table style=\"width: 100%; min-width: 900px; margin: 0; border: 0; border-collapse: collapse; border-spacing: 0; background: #ffffff;\">\n<thead>\n<tr>\n<th style=\"padding: 14px; border: 1px solid #344955; color: #ffffff; background: #123f61; text-align: left;\" scope=\"col\">Material<\/th>\n<th style=\"padding: 14px; border: 1px solid #344955; color: #ffffff; background: #123f61; text-align: left;\" scope=\"col\">Typical Use<\/th>\n<th style=\"padding: 14px; border: 1px solid #344955; color: #ffffff; background: #123f61; text-align: left;\" scope=\"col\">Main Characteristics<\/th>\n<th style=\"padding: 14px; border: 1px solid #344955; color: #ffffff; background: #123f61; text-align: left;\" scope=\"col\">Points to Confirm<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"padding: 14px; border: 1px solid #344955; vertical-align: top;\">Carbon steel<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955; vertical-align: top;\">General crude oil, natural gas and utility service<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955; vertical-align: top;\">Widely available and suitable for many pressure classes<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955; vertical-align: top;\">Corrosion allowance, low temperature and sour-service requirements<\/td>\n<\/tr>\n<tr style=\"background: #edf5f8;\">\n<td style=\"padding: 14px; border: 1px solid #344955; vertical-align: top;\">Low-temperature carbon steel<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955; vertical-align: top;\">Cold gas, condensate and low-ambient-temperature locations<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955; vertical-align: top;\">Improved toughness at reduced temperature<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955; vertical-align: top;\">Minimum design temperature and impact-test requirements<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 14px; border: 1px solid #344955; vertical-align: top;\">Stainless steel<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955; vertical-align: top;\">Corrosive process fluids and selected utility services<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955; vertical-align: top;\">Better general corrosion resistance than carbon steel<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955; vertical-align: top;\">Chloride level, temperature and localized-corrosion risk<\/td>\n<\/tr>\n<tr style=\"background: #edf5f8;\">\n<td style=\"padding: 14px; border: 1px solid #344955; vertical-align: top;\">Duplex stainless steel<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955; vertical-align: top;\">Chloride-bearing water and corrosive production fluids<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955; vertical-align: top;\">High strength with improved chloride resistance<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955; vertical-align: top;\">Grade, welding procedure, heat treatment and service temperature<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 14px; border: 1px solid #344955; vertical-align: top;\">Chrome-molybdenum steel<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955; vertical-align: top;\">Higher-temperature hydrocarbon and steam service<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955; vertical-align: top;\">Improved strength at elevated temperature<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955; vertical-align: top;\">Temperature range, welding and heat-treatment requirements<\/td>\n<\/tr>\n<tr style=\"background: #edf5f8;\">\n<td style=\"padding: 14px; border: 1px solid #344955; vertical-align: top;\">Nickel alloy<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955; vertical-align: top;\">Severe corrosion, acid gas and demanding chemical service<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955; vertical-align: top;\">Alloy-specific resistance to corrosive media<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955; vertical-align: top;\">Exact fluid chemistry, temperature and alloy compatibility<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<aside style=\"margin: 24px 0; padding: 19px 22px; background: #fff8e6; border-left: 5px solid #dfa51f; border-radius: 4px;\"><strong>Sour-service note:<\/strong><br \/>\nIf the fluid contains hydrogen sulfide, the valve body, trim,<br \/>\nbolting, welds, hardness and manufacturing route may require<br \/>\nevaluation against the project-specified sour-service requirements.<br \/>\nCarbon dioxide corrosion, chlorides and produced water must be<br \/>\nevaluated separately because resistance to sulfide cracking does not<br \/>\nautomatically provide resistance to general or localized corrosion.<\/aside>\n<\/section>\n<section id=\"seat-selection\">\n<h2 style=\"margin: 48px 0 20px; padding-bottom: 10px; color: #123f61; font-size: 30px; line-height: 1.3; border-bottom: 3px solid #148ba6;\">Soft-Seated or Metal-Seated Valve: Which Should You Choose?<\/h2>\n<p style=\"margin: 0 0 20px;\">Soft-seated valves are generally selected when tight shutoff is<br \/>\nrequired and the temperature, pressure, chemical composition and<br \/>\nsolids content are compatible with the seat material. Common seat<br \/>\nmaterials include PTFE, reinforced PTFE, PEEK and elastomeric<br \/>\ncompounds.<\/p>\n<p style=\"margin: 0 0 20px;\">Metal-seated valves are considered for elevated temperature,<br \/>\nabrasive particles, high differential pressure, frequent cycling or<br \/>\nservices that could damage a soft seat. Metal seats may use hard<br \/>\nfacing or surface treatment to improve wear and erosion resistance.<\/p>\n<div style=\"display: block; width: 100%; max-width: 100%; margin: 24px 0 34px; overflow-x: auto; overflow-y: hidden; border: 2px solid #344955; border-radius: 4px; -webkit-overflow-scrolling: touch;\" tabindex=\"0\" role=\"region\" aria-label=\"Soft seat and metal seat comparison\">\n<table style=\"width: 100%; min-width: 800px; margin: 0; border: 0; border-collapse: collapse; border-spacing: 0; background: #ffffff;\">\n<thead>\n<tr>\n<th style=\"padding: 14px; border: 1px solid #344955; color: #ffffff; background: #123f61; text-align: left;\" scope=\"col\">Selection Factor<\/th>\n<th style=\"padding: 14px; border: 1px solid #344955; color: #ffffff; background: #123f61; text-align: left;\" scope=\"col\">Soft Seat<\/th>\n<th style=\"padding: 14px; border: 1px solid #344955; color: #ffffff; background: #123f61; text-align: left;\" scope=\"col\">Metal Seat<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"padding: 14px; border: 1px solid #344955;\"><strong>Shutoff<\/strong><\/td>\n<td style=\"padding: 14px; border: 1px solid #344955;\">Commonly selected for very tight shutoff<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955;\">Leakage class depends on design and specification<\/td>\n<\/tr>\n<tr style=\"background: #edf5f8;\">\n<td style=\"padding: 14px; border: 1px solid #344955;\"><strong>Temperature<\/strong><\/td>\n<td style=\"padding: 14px; border: 1px solid #344955;\">Limited by seat material<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955;\">Suitable for higher-temperature applications<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 14px; border: 1px solid #344955;\"><strong>Solids<\/strong><\/td>\n<td style=\"padding: 14px; border: 1px solid #344955;\">Particles may cut or embed in the seat<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955;\">Better suited to selected abrasive services<\/td>\n<\/tr>\n<tr style=\"background: #edf5f8;\">\n<td style=\"padding: 14px; border: 1px solid #344955;\"><strong>Operating torque<\/strong><\/td>\n<td style=\"padding: 14px; border: 1px solid #344955;\">Often lower, depending on design<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955;\">May require higher actuator torque<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 14px; border: 1px solid #344955;\"><strong>Typical service<\/strong><\/td>\n<td style=\"padding: 14px; border: 1px solid #344955;\">Clean liquid and gas isolation<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955;\">High temperature, erosion or severe cycling<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/section>\n<section id=\"oil-gas-standards\">\n<h2 style=\"margin: 48px 0 20px; padding-bottom: 10px; color: #123f61; font-size: 30px; line-height: 1.3; border-bottom: 3px solid #148ba6;\">Which Standards Apply to Onshore Oil and Gas Valves?<\/h2>\n<p style=\"margin: 0 0 20px;\">The applicable valve standard depends on the equipment type,<br \/>\npipeline or process location and purchaser specification. A project<br \/>\nmay reference separate standards for design, dimensions, inspection,<br \/>\nleakage testing, fire testing, fugitive emissions and sour-service<br \/>\nmaterial selection.<\/p>\n<div style=\"display: block; width: 100%; max-width: 100%; margin: 24px 0 34px; overflow-x: auto; overflow-y: hidden; border: 2px solid #344955; border-radius: 4px; -webkit-overflow-scrolling: touch;\" tabindex=\"0\" role=\"region\" aria-label=\"Common onshore oil and gas valve standards\">\n<table style=\"width: 100%; min-width: 900px; margin: 0; border: 0; border-collapse: collapse; border-spacing: 0; background: #ffffff;\">\n<thead>\n<tr>\n<th style=\"padding: 14px; border: 1px solid #344955; color: #ffffff; background: #123f61; text-align: left;\" scope=\"col\">Standard<\/th>\n<th style=\"padding: 14px; border: 1px solid #344955; color: #ffffff; background: #123f61; text-align: left;\" scope=\"col\">General Application<\/th>\n<th style=\"padding: 14px; border: 1px solid #344955; color: #ffffff; background: #123f61; text-align: left;\" scope=\"col\">Selection Note<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"padding: 14px; border: 1px solid #344955;\">API 6D<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955;\">Pipeline and piping valves<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955;\">Commonly specified for ball, gate, plug and check valves in pipeline systems<\/td>\n<\/tr>\n<tr style=\"background: #edf5f8;\">\n<td style=\"padding: 14px; border: 1px solid #344955;\">ASME B16.34<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955;\">Pressure-temperature ratings, materials, testing and marking<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955;\">Applies to covered flanged, threaded, welding-end and flangeless valves<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 14px; border: 1px solid #344955;\">API 598<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955;\">Valve inspection and pressure testing<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955;\">Test medium, duration and acceptance criteria must follow the purchase specification<\/td>\n<\/tr>\n<tr style=\"background: #edf5f8;\">\n<td style=\"padding: 14px; border: 1px solid #344955;\">ASME B16.10<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955;\">Face-to-face and end-to-end dimensions<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955;\">Confirm the required dimensional series before manufacturing<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 14px; border: 1px solid #344955;\">API 607 or API 6FA<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955;\">Fire type-testing for applicable valve designs<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955;\">Specify the required standard and qualification scope<\/td>\n<\/tr>\n<tr style=\"background: #edf5f8;\">\n<td style=\"padding: 14px; border: 1px solid #344955;\">ISO 15156 \/ NACE MR0175<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955;\">Metallic materials for H\u2082S-containing production environments<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955;\">Material grade, hardness, heat treatment and environmental limits require review<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 14px; border: 1px solid #344955;\">Project fugitive-emission standard<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955;\">Control of stem and body-joint emissions<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955;\">Confirm the required test method, temperature class and endurance cycles<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<aside style=\"margin: 24px 0; padding: 19px 22px; background: #fff8e6; border-left: 5px solid #dfa51f; border-radius: 4px;\"><strong>Specification note:<\/strong><br \/>\nDo not assume that one standard covers every requirement. The<br \/>\npurchase specification should separately state the valve design,<br \/>\npressure class, end connection, test standard, leakage acceptance,<br \/>\nfire-safe requirement, fugitive-emission requirement and<br \/>\nsour-service material requirement.<\/aside>\n<\/section>\n<section>\n<h2 style=\"margin: 48px 0 20px; padding-bottom: 10px; color: #123f61; font-size: 30px; line-height: 1.3; border-bottom: 3px solid #148ba6;\">What Operating Risks Should Be Considered?<\/h2>\n<h3 style=\"margin: 28px 0 12px; color: #123f61; font-size: 22px;\">Sour Gas and Hydrogen Sulfide<\/h3>\n<p style=\"margin: 0 0 20px;\">Hydrogen sulfide can increase the risk of cracking in susceptible<br \/>\nmetallic materials. Material grade, hardness, heat treatment, weld<br \/>\nprocedure and environmental limits must be checked against the<br \/>\nproject sour-service specification.<\/p>\n<h3 style=\"margin: 28px 0 12px; color: #123f61; font-size: 22px;\">Carbon Dioxide and Produced Water<\/h3>\n<p style=\"margin: 0 0 20px;\">Wet carbon dioxide can contribute to internal corrosion. Chlorides,<br \/>\nwater chemistry, temperature and flow conditions may also affect<br \/>\nlocalized corrosion and material selection.<\/p>\n<h3 style=\"margin: 28px 0 12px; color: #123f61; font-size: 22px;\">Sand and Solid Particles<\/h3>\n<p style=\"margin: 0 0 20px;\">Sand and scale can erode seats, closure members and control-valve<br \/>\ntrim. High-velocity flow through a partially open valve can<br \/>\naccelerate damage at restricted flow passages.<\/p>\n<h3 style=\"margin: 28px 0 12px; color: #123f61; font-size: 22px;\">High Differential Pressure<\/h3>\n<p style=\"margin: 0 0 20px;\">High differential pressure affects operating torque, actuator sizing,<br \/>\ncontrol stability and seat life. Gas decompression, cavitation,<br \/>\nflashing and aerodynamic noise should be evaluated where applicable.<\/p>\n<h3 style=\"margin: 28px 0 12px; color: #123f61; font-size: 22px;\">Fire Exposure<\/h3>\n<p style=\"margin: 0 0 20px;\">Fire-safe construction may be required for valves handling flammable<br \/>\nhydrocarbons. The purchaser should specify the required fire-test<br \/>\nstandard and verify that the tested valve design, materials and size<br \/>\nrange cover the ordered product.<\/p>\n<h3 style=\"margin: 28px 0 12px; color: #123f61; font-size: 22px;\">Fugitive Emissions<\/h3>\n<p style=\"margin: 0 0 20px;\">Stem packing and body joints may release volatile hydrocarbons.<br \/>\nLow-emission packing, controlled surface finish, suitable bolting and<br \/>\nverified assembly procedures help reduce external leakage.<\/p>\n<\/section>\n<section id=\"selection-process\">\n<h2 style=\"margin: 48px 0 20px; padding-bottom: 10px; color: #123f61; font-size: 30px; line-height: 1.3; border-bottom: 3px solid #148ba6;\">How Do You Select an Onshore Oil and Gas Valve?<\/h2>\n<ol style=\"margin: 0 0 25px; padding-left: 26px;\">\n<li style=\"margin-bottom: 12px;\"><strong>Define the valve function.<\/strong><br \/>\nState whether the valve is required for isolation, throttling,<br \/>\nreverse-flow prevention, pressure control or emergency shutdown.<\/li>\n<li style=\"margin-bottom: 12px;\"><strong>Identify the complete medium composition.<\/strong><br \/>\nInclude oil, gas, water, condensate, solids, hydrogen sulfide,<br \/>\ncarbon dioxide, chlorides and process chemicals.<\/li>\n<li style=\"margin-bottom: 12px;\"><strong>Provide the design conditions.<\/strong><br \/>\nState design pressure, operating pressure, design temperature and<br \/>\nminimum operating temperature.<\/li>\n<li style=\"margin-bottom: 12px;\"><strong>Select the valve type.<\/strong><br \/>\nMatch the valve operating principle to the required shutoff,<br \/>\npressure loss, flow-control duty and cycling frequency.<\/li>\n<li style=\"margin-bottom: 12px;\"><strong>Select body and trim materials.<\/strong><br \/>\nReview corrosion, erosion, sour service, low temperature and<br \/>\nmechanical strength.<\/li>\n<li style=\"margin-bottom: 12px;\"><strong>Define the seat and leakage requirement.<\/strong><br \/>\nSpecify soft or metal seats and the applicable leakage acceptance<br \/>\ncriteria.<\/li>\n<li style=\"margin-bottom: 12px;\"><strong>Confirm end connections and dimensions.<\/strong><br \/>\nState flanged, butt-weld, socket-weld or threaded ends together<br \/>\nwith the required dimensional standards.<\/li>\n<li style=\"margin-bottom: 12px;\"><strong>Select the operating method.<\/strong><br \/>\nChoose lever, gearbox, electric, pneumatic, hydraulic or<br \/>\ngas-over-oil operation.<\/li>\n<li style=\"margin-bottom: 12px;\"><strong>State special qualification requirements.<\/strong><br \/>\nInclude fire-safe, antistatic, fugitive-emission, sour-service,<br \/>\nnondestructive-examination and impact-testing requirements.<\/li>\n<li><strong>Confirm inspection and documentation.<\/strong><br \/>\nDefine pressure testing, material certificates, inspection plan,<br \/>\ndrawings, calculations and third-party inspection requirements.<\/li>\n<\/ol>\n<\/section>\n<section>\n<h2 style=\"margin: 48px 0 20px; padding-bottom: 10px; color: #123f61; font-size: 30px; line-height: 1.3; border-bottom: 3px solid #148ba6;\">Manual or Actuated Valve: Which Is Suitable?<\/h2>\n<p style=\"margin: 0 0 20px;\">Manual valves are suitable where operation is infrequent and the<br \/>\nvalve is accessible. A gearbox may be required when valve size,<br \/>\ndifferential pressure or seat torque makes direct lever or handwheel<br \/>\noperation impractical.<\/p>\n<p style=\"margin: 0 0 20px;\">Pneumatic, electric, hydraulic and gas-over-oil actuators support<br \/>\nremote operation, process control and emergency shutdown. Actuator<br \/>\nsizing should use the maximum required valve torque or thrust with<br \/>\nthe project safety factor and the minimum available power, air or<br \/>\nhydraulic pressure.<\/p>\n<p style=\"margin: 0 0 20px;\">The actuator specification should state opening time, closing time,<br \/>\nfail-open, fail-close or fail-in-place action, position feedback,<br \/>\nhazardous-area classification, enclosure protection and local manual<br \/>\noverride requirements.<\/p>\n<\/section>\n<section id=\"quotation-information\">\n<h2 style=\"margin: 48px 0 20px; padding-bottom: 10px; color: #123f61; font-size: 30px; line-height: 1.3; border-bottom: 3px solid #148ba6;\">What Information Is Required for an Oil and Gas Valve Quotation?<\/h2>\n<p style=\"margin: 0 0 20px;\">A complete datasheet allows the valve manufacturer to select the<br \/>\ncorrect design, pressure class, materials, seats, actuator and<br \/>\ntesting requirements without relying on assumptions.<\/p>\n<div style=\"display: block; width: 100%; max-width: 100%; margin: 24px 0 34px; overflow-x: auto; overflow-y: hidden; border: 2px solid #344955; border-radius: 4px; -webkit-overflow-scrolling: touch;\" tabindex=\"0\" role=\"region\" aria-label=\"Oil and gas valve quotation requirements\">\n<table style=\"width: 100%; min-width: 800px; margin: 0; border: 0; border-collapse: collapse; border-spacing: 0; background: #ffffff;\">\n<thead>\n<tr>\n<th style=\"padding: 14px; border: 1px solid #344955; color: #ffffff; background: #123f61; text-align: left;\" scope=\"col\">Required Information<\/th>\n<th style=\"padding: 14px; border: 1px solid #344955; color: #ffffff; background: #123f61; text-align: left;\" scope=\"col\">Details to Provide<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"padding: 14px; border: 1px solid #344955;\">Valve type and quantity<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955;\">Ball, gate, globe, check, butterfly or control valve<\/td>\n<\/tr>\n<tr style=\"background: #edf5f8;\">\n<td style=\"padding: 14px; border: 1px solid #344955;\">Size and pressure rating<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955;\">NPS or DN size and ASME Class or PN rating<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 14px; border: 1px solid #344955;\">Medium composition<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955;\">Oil, gas, condensate, water, H\u2082S, CO\u2082, chlorides and solids<\/td>\n<\/tr>\n<tr style=\"background: #edf5f8;\">\n<td style=\"padding: 14px; border: 1px solid #344955;\">Pressure and temperature<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955;\">Design, normal, maximum and minimum conditions<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 14px; border: 1px solid #344955;\">Flow data<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955;\">Minimum, normal and maximum flow rate where applicable<\/td>\n<\/tr>\n<tr style=\"background: #edf5f8;\">\n<td style=\"padding: 14px; border: 1px solid #344955;\">Material requirements<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955;\">Body, closure member, stem, trim, seat, seal and bolting<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 14px; border: 1px solid #344955;\">End connection<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955;\">Flanged, butt-weld, socket-weld or threaded<\/td>\n<\/tr>\n<tr style=\"background: #edf5f8;\">\n<td style=\"padding: 14px; border: 1px solid #344955;\">Operation<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955;\">Manual, gearbox, pneumatic, electric or hydraulic<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 14px; border: 1px solid #344955;\">Applicable standards<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955;\">Design, dimensions, inspection, testing and leakage requirements<\/td>\n<\/tr>\n<tr style=\"background: #edf5f8;\">\n<td style=\"padding: 14px; border: 1px solid #344955;\">Special requirements<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955;\">Sour service, fire safe, antistatic, low emission and NDE<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 14px; border: 1px solid #344955;\">Documents<\/td>\n<td style=\"padding: 14px; border: 1px solid #344955;\">Datasheet, drawing, certificates, QAP, ITP and test reports<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/section>\n<section id=\"oil-gas-faq\">\n<h2 style=\"margin: 48px 0 20px; padding-bottom: 10px; color: #123f61; font-size: 30px; line-height: 1.3; border-bottom: 3px solid #148ba6;\">Frequently Asked Questions About Onshore Oil and Gas Valves<\/h2>\n<div style=\"margin-bottom: 16px; padding: 22px 24px; background: #f7fafc; border: 1px solid #aebfc9; border-radius: 7px;\">\n<h3 style=\"margin: 0 0 10px; color: #123f61; font-size: 20px;\">What valves are most common in onshore oil and gas pipelines?<\/h3>\n<p style=\"margin: 0;\">Trunnion-mounted ball valves, through-conduit gate valves and<br \/>\ncheck valves are commonly used in onshore transmission pipelines.<br \/>\nThe final selection depends on pressure class, pipeline size,<br \/>\npigging requirements, shutoff performance and operating method.<\/p>\n<\/div>\n<div style=\"margin-bottom: 16px; padding: 22px 24px; background: #f7fafc; border: 1px solid #aebfc9; border-radius: 7px;\">\n<h3 style=\"margin: 0 0 10px; color: #123f61; font-size: 20px;\">What is the difference between API 6D and ASME B16.34?<\/h3>\n<p style=\"margin: 0;\">API 6D addresses pipeline and piping valves, while ASME B16.34<br \/>\ncovers pressure-temperature ratings, materials, dimensions,<br \/>\nexamination, testing and marking for the valve types within its<br \/>\nscope. Oil and gas projects may specify both standards together.<\/p>\n<\/div>\n<div style=\"margin-bottom: 16px; padding: 22px 24px; background: #f7fafc; border: 1px solid #aebfc9; border-radius: 7px;\">\n<h3 style=\"margin: 0 0 10px; color: #123f61; font-size: 20px;\">Which valve is suitable for high-pressure natural gas?<\/h3>\n<p style=\"margin: 0;\">Trunnion-mounted ball valves and selected gate valves are commonly<br \/>\nused for high-pressure natural gas isolation. Valve design,<br \/>\npressure class, seat construction, body material, stem sealing<br \/>\nand actuator torque must be verified against the actual gas<br \/>\nconditions.<\/p>\n<\/div>\n<div style=\"margin-bottom: 16px; padding: 22px 24px; background: #f7fafc; border: 1px solid #aebfc9; border-radius: 7px;\">\n<h3 style=\"margin: 0 0 10px; color: #123f61; font-size: 20px;\">What is a sour-service valve?<\/h3>\n<p style=\"margin: 0;\">A sour-service valve uses materials and manufacturing controls<br \/>\nselected for an H\u2082S-containing environment. Material grade,<br \/>\nhardness, heat treatment, welding and environmental limits must<br \/>\ncomply with the project specification.<\/p>\n<\/div>\n<div style=\"margin-bottom: 16px; padding: 22px 24px; background: #f7fafc; border: 1px solid #aebfc9; border-radius: 7px;\">\n<h3 style=\"margin: 0 0 10px; color: #123f61; font-size: 20px;\">When is a fire-safe valve required?<\/h3>\n<p style=\"margin: 0;\">A fire-safe valve may be required where the valve handles<br \/>\nflammable hydrocarbons and the project risk assessment or<br \/>\nspecification requires fire-tested construction. The applicable<br \/>\nfire-test standard and qualification scope should be stated in<br \/>\nthe purchase documents.<\/p>\n<\/div>\n<div style=\"margin-bottom: 16px; padding: 22px 24px; background: #f7fafc; border: 1px solid #aebfc9; border-radius: 7px;\">\n<h3 style=\"margin: 0 0 10px; color: #123f61; font-size: 20px;\">Can a gate valve be used for throttling?<\/h3>\n<p style=\"margin: 0;\">A standard gate valve is generally intended for fully open or<br \/>\nfully closed isolation. Prolonged throttling may cause vibration,<br \/>\nerosion and damage to the gate and seats. Globe or control valves<br \/>\nare normally better choices for continuous flow regulation.<\/p>\n<\/div>\n<div style=\"padding: 22px 24px; background: #f7fafc; border: 1px solid #aebfc9; border-radius: 7px;\">\n<h3 style=\"margin: 0 0 10px; color: #123f61; font-size: 20px;\">What information should be sent with an oil and gas valve RFQ?<\/h3>\n<p style=\"margin: 0;\">An oil and gas valve RFQ should include valve type, size,<br \/>\npressure class, medium composition, pressure, temperature,<br \/>\nmaterials, end connection, operation method, standards, testing<br \/>\nrequirements and required project documents.<\/p>\n<\/div>\n<\/section>\n<p>&nbsp;<\/p>\n<aside style=\"margin-top: 42px; padding: 24px 27px; background: #eef5f8; border: 1px solid #aebfc9; border-radius: 7px;\"><strong style=\"display: block; margin-bottom: 8px; color: #123f61; font-size: 20px;\"><br \/>\nAbout the Author<br \/>\n<\/strong><\/p>\n<p style=\"margin: 0;\"><strong>wong wp<\/strong> works with WDL Valve on<br \/>\nindustrial valve selection and international project support. His work<br \/>\ncovers pipeline, corrosion-resistant, high-pressure and<br \/>\ncustom-engineered valves for oil and gas, chemical, power, water and<br \/>\nsevere-service applications.<\/p>\n<\/aside>\n<section style=\"margin-top: 42px; padding: 34px 28px; color: #ffffff; text-align: center; background: #123f61; border-radius: 9px;\">\n<h2 style=\"margin: 0 0 14px; color: #ffffff; font-size: 29px; line-height: 1.3;\">Request an Onshore Oil and Gas Valve Quotation<\/h2>\n<p style=\"max-width: 820px; margin: 0 auto 22px;\">WDL Valve supplies ball, gate, globe, check, butterfly and control<br \/>\nvalves for crude oil, natural gas, condensate, produced water and<br \/>\nutility systems. Send us your datasheet, valve list or project<br \/>\nspecification for technical review and quotation.<\/p>\n<p><a style=\"display: inline-block; padding: 13px 27px; color: #123f61; background: #ffffff; border: 2px solid #ffffff; border-radius: 5px; font-weight: bold; text-decoration: none;\" href=\"\/contact-us\/\">Request a Quote<br \/>\n<\/a><\/p>\n<\/section>\n<\/article>\n<p><script type=\"application\/ld+json\">\n{\n    \"@context\": \"https:\/\/schema.org\",\n    \"@type\": \"FAQPage\",\n    \"mainEntity\": [\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What valves are most common in onshore oil and gas pipelines?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Trunnion-mounted ball valves, through-conduit gate valves and check valves are commonly used in onshore transmission pipelines. The final selection depends on pressure class, pipeline size, pigging requirements, shutoff performance and operating method.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What is the difference between API 6D and ASME B16.34?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"API 6D addresses pipeline and piping valves, while ASME B16.34 covers pressure-temperature ratings, materials, dimensions, examination, testing and marking for the valve types within its scope. Oil and gas projects may specify both standards together.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Which valve is suitable for high-pressure natural gas?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Trunnion-mounted ball valves and selected gate valves are commonly used for high-pressure natural gas isolation. Valve design, pressure class, seat construction, body material, stem sealing and actuator torque must be verified against the actual gas conditions.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What is a sour-service valve?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"A sour-service valve uses materials and manufacturing controls selected for an H2S-containing environment. Material grade, hardness, heat treatment, welding and environmental limits must comply with the project specification.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"When is a fire-safe valve required?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"A fire-safe valve may be required where the valve handles flammable hydrocarbons and the project risk assessment or specification requires fire-tested construction. The applicable fire-test standard and qualification scope should be stated in the purchase documents.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Can a gate valve be used for throttling?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"A standard gate valve is generally intended for fully open or fully closed isolation. Prolonged throttling may cause vibration, erosion and damage to the gate and seats. Globe or control valves are normally better choices for continuous flow regulation.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What information should be sent with an oil and gas valve RFQ?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"An oil and gas valve RFQ should include valve type, size, pressure class, medium composition, pressure, temperature, materials, end connection, operation method, standards, testing requirements and required project documents.\"\n            }\n        }\n    ]\n}\n<\/script><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u062a\u064f\u0633\u062a\u062e\u062f\u0645 \u0635\u0645\u0627\u0645\u0627\u062a \u0627\u0644\u0646\u0641\u0637 \u0648\u0627\u0644\u063a\u0627\u0632 \u0627\u0644\u0628\u0631\u064a\u0629 \u0644\u0639\u0632\u0644 \u0627\u0644\u062a\u062f\u0641\u0642 \u0648\u062e\u0646\u0642\u0647 \u0648\u0645\u0646\u0639 \u0627\u0644\u062a\u062f\u0641\u0642 \u0627\u0644\u0639\u0643\u0633\u064a \u0641\u064a \u0623\u0646\u0638\u0645\u0629 \u0627\u0644\u062a\u062c\u0645\u064a\u0639 \u0648\u0627\u0644\u0645\u0639\u0627\u0644\u062c\u0629 \u0648\u0627\u0644\u0646\u0642\u0644 \u0648\u0627\u0644\u062a\u062e\u0632\u064a\u0646. \u062a\u0648\u0641\u0631 \u0634\u0631\u0643\u0629 WDL Valve \u0635\u0645\u0627\u0645\u0627\u062a \u0643\u0631\u0648\u064a\u0629\u060c \u0648\u0628\u0648\u0627\u0628\u064a\u0629\u060c \u0648\u0643\u0631\u0648\u064a\u0629\u060c \u0648\u0645\u0627\u0646\u0639\u0629 \u0644\u0644\u0631\u062c\u0648\u0639\u060c \u0648\u0635\u0645\u0627\u0645\u0627\u062a \u0627\u0644\u062a\u062d\u0643\u0645 \u0627\u0644\u0645\u0633\u062a\u062e\u062f\u0645\u0629 \u0641\u064a \u0627\u0644\u0646\u0641\u0637 \u0627\u0644\u062e\u0627\u0645\u060c \u0648\u0627\u0644\u063a\u0627\u0632 \u0627\u0644\u0637\u0628\u064a\u0639\u064a\u060c \u0648\u0627\u0644\u0645\u0643\u062b\u0641\u0627\u062a\u060c \u0648\u0627\u0644\u0645\u064a\u0627\u0647 \u0627\u0644\u0645\u0646\u062a\u062c\u0629\u060c \u0648\u062e\u062f\u0645\u0627\u062a \u0627\u0644\u0645\u0631\u0627\u0641\u0642 \u0627\u0644\u0639\u0627\u0645\u0629. \u0645\u0627 \u0647\u064a \u0635\u0645\u0627\u0645\u0627\u062a \u0627\u0644\u0646\u0641\u0637 \u0648\u0627\u0644\u063a\u0627\u0632 \u0627\u0644\u0628\u0631\u064a\u0629\u061f \u0635\u0645\u0627\u0645\u0627\u062a \u0627\u0644\u0646\u0641\u0637 \u0648\u0627\u0644\u063a\u0627\u0632 \u0627\u0644\u0628\u0631\u064a\u0629 \u0647\u064a \u0645\u0643\u0648\u0646\u0627\u062a \u0645\u062d\u062a\u0648\u064a\u0629 \u0639\u0644\u0649 \u0627\u0644\u0636\u063a\u0637 \u062a\u064f\u0633\u062a\u062e\u062f\u0645\u2026<\/p>","protected":false},"author":1,"featured_media":354,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_kad_post_transparent":"default","_kad_post_title":"default","_kad_post_layout":"default","_kad_post_sidebar_id":"","_kad_post_content_style":"default","_kad_post_vertical_padding":"default","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":""},"categories":[52,53],"tags":[],"class_list":["post-1071","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","category-company-news"],"_links":{"self":[{"href":"https:\/\/wdlvalve.com\/ar\/wp-json\/wp\/v2\/posts\/1071","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wdlvalve.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wdlvalve.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wdlvalve.com\/ar\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/wdlvalve.com\/ar\/wp-json\/wp\/v2\/comments?post=1071"}],"version-history":[{"count":1,"href":"https:\/\/wdlvalve.com\/ar\/wp-json\/wp\/v2\/posts\/1071\/revisions"}],"predecessor-version":[{"id":1075,"href":"https:\/\/wdlvalve.com\/ar\/wp-json\/wp\/v2\/posts\/1071\/revisions\/1075"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/wdlvalve.com\/ar\/wp-json\/wp\/v2\/media\/354"}],"wp:attachment":[{"href":"https:\/\/wdlvalve.com\/ar\/wp-json\/wp\/v2\/media?parent=1071"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wdlvalve.com\/ar\/wp-json\/wp\/v2\/categories?post=1071"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wdlvalve.com\/ar\/wp-json\/wp\/v2\/tags?post=1071"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}