{"id":611,"date":"2026-09-16T06:59:18","date_gmt":"2026-09-16T06:59:18","guid":{"rendered":"https:\/\/wdlvalve.com\/product\/duplex-gate-valves\/"},"modified":"2026-09-18T03:15:41","modified_gmt":"2026-09-18T03:15:41","slug":"%e0%b8%a7%e0%b8%b2%e0%b8%a5%e0%b9%8c%e0%b8%a7%e0%b8%9b%e0%b8%a3%e0%b8%b0%e0%b8%95%e0%b8%b9%e0%b8%97%e0%b8%b3%e0%b8%88%e0%b8%b2%e0%b8%81%e0%b9%80%e0%b8%ab%e0%b8%a5%e0%b9%87%e0%b8%81%e0%b8%aa%e0%b9%81","status":"publish","type":"product","link":"https:\/\/wdlvalve.com\/th\/product\/%e0%b8%a7%e0%b8%b2%e0%b8%a5%e0%b9%8c%e0%b8%a7%e0%b8%9b%e0%b8%a3%e0%b8%b0%e0%b8%95%e0%b8%b9%e0%b8%97%e0%b8%b3%e0%b8%88%e0%b8%b2%e0%b8%81%e0%b9%80%e0%b8%ab%e0%b8%a5%e0%b9%87%e0%b8%81%e0%b8%aa%e0%b9%81\/","title":{"rendered":"\u0e27\u0e32\u0e25\u0e4c\u0e27\u0e1b\u0e23\u0e30\u0e15\u0e39\u0e41\u0e1a\u0e1a\u0e14\u0e39\u0e40\u0e1e\u0e25\u0e47\u0e01\u0e0b\u0e4c\u0e17\u0e33\u0e08\u0e32\u0e01\u0e40\u0e2b\u0e25\u0e47\u0e01\u0e2a\u0e41\u0e15\u0e19\u0e40\u0e25\u0e2a"},"content":{"rendered":"<article style=\"max-width: 1200px; margin: 0 auto; font-family: Arial,Helvetica,sans-serif; color: #222; line-height: 1.7;\">\n<h2 style=\"color: #123a5a; font-size: 28px; margin: 0 0 16px;\">Duplex Stainless Steel Gate Valve for Seawater and Chloride Service<\/h2>\n<p>WDL Valve duplex stainless steel gate valves are designed for reliable pipeline<br \/>\nisolation in corrosive, chloride-rich and demanding industrial environments.<br \/>\nThe valve provides full shut-off performance and is suitable for applications<br \/>\nwhere high mechanical strength and resistance to corrosion are required.<\/p>\n<p>Duplex stainless steel combines two metallurgical phases: ferritic stainless steel<br \/>\nand austenitic stainless steel. The ferritic phase improves yield strength,<br \/>\nintergranular corrosion resistance and chloride stress corrosion cracking<br \/>\nresistance. The austenitic phase contributes toughness, ductility and weldability.<\/p>\n<p>Compared with austenitic stainless steel grades offering similar corrosion<br \/>\nresistance, duplex stainless steel normally contains lower levels of nickel and<br \/>\nmolybdenum. This can provide a cost-efficient material option for large industrial<br \/>\nvalves and corrosion-resistant pipeline systems.<\/p>\n<h2 style=\"color: #123a5a; font-size: 26px; margin: 28px 0 16px;\">\u0e04\u0e38\u0e13\u0e2a\u0e21\u0e1a\u0e31\u0e15\u0e34\u0e2b\u0e25\u0e31\u0e01<\/h2>\n<ul style=\"padding-left: 22px; margin-top: 0;\">\n<li>High mechanical strength for demanding industrial pipeline service.<\/li>\n<li>Improved resistance to chloride stress corrosion cracking.<\/li>\n<li>Good resistance to pitting and crevice corrosion in chloride-containing media.<\/li>\n<li>Suitable for seawater and desalination applications.<\/li>\n<li>Good toughness and weldability compared with fully ferritic stainless steel.<\/li>\n<li>Lower nickel content than many austenitic stainless steel grades.<\/li>\n<li>Reliable shut-off for process, utility and seawater pipelines.<\/li>\n<li>Suitable for manual or customized actuation arrangements according to project requirements.<\/li>\n<li>Available with customized materials, pressure ratings, dimensions and end connections.<\/li>\n<\/ul>\n<h2 style=\"color: #123a5a; font-size: 26px; margin: 28px 0 16px;\">Technical Overview<\/h2>\n<div style=\"width: 100%; overflow-x: auto; -webkit-overflow-scrolling: touch; margin-bottom: 28px;\">\n<table style=\"width: 100%; min-width: 720px; border: 1px solid #111111!important; border-collapse: collapse; background: #ffffff;\" border=\"1\" rules=\"all\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<th style=\"width: 34%; padding: 11px; border: 1px solid #111111!important; background: #eaf3f8; text-align: left;\">\u0e23\u0e32\u0e22\u0e01\u0e32\u0e23<\/th>\n<th style=\"padding: 11px; border: 1px solid #111111!important; background: #eaf3f8; text-align: left;\">Description<\/th>\n<\/tr>\n<tr>\n<td style=\"padding: 11px; border: 1px solid #111111!important;\">Product Type<\/td>\n<td style=\"padding: 11px; border: 1px solid #111111!important;\">\u0e27\u0e32\u0e25\u0e4c\u0e27\u0e1b\u0e23\u0e30\u0e15\u0e39\u0e41\u0e1a\u0e1a\u0e14\u0e39\u0e40\u0e1e\u0e25\u0e47\u0e01\u0e0b\u0e4c\u0e17\u0e33\u0e08\u0e32\u0e01\u0e40\u0e2b\u0e25\u0e47\u0e01\u0e2a\u0e41\u0e15\u0e19\u0e40\u0e25\u0e2a<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 11px; border: 1px solid #111111!important;\">Primary Function<\/td>\n<td style=\"padding: 11px; border: 1px solid #111111!important;\">Pipeline isolation and full shut-off<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 11px; border: 1px solid #111111!important;\">Valve Material<\/td>\n<td style=\"padding: 11px; border: 1px solid #111111!important;\">Duplex stainless steel and project-specified duplex grades<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 11px; border: 1px solid #111111!important;\">Corrosion Performance<\/td>\n<td style=\"padding: 11px; border: 1px solid #111111!important;\">Resistance to chloride corrosion, pitting, crevice corrosion and chloride stress corrosion cracking<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 11px; border: 1px solid #111111!important;\">Applicable Media<\/td>\n<td style=\"padding: 11px; border: 1px solid #111111!important;\">Seawater, brine, process water, oil, chemical fluids and other corrosive media subject to material selection<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 11px; border: 1px solid #111111!important;\">Customization<\/td>\n<td style=\"padding: 11px; border: 1px solid #111111!important;\">Custom pressure class, size, end connection, trim material and actuator configuration available<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h2 style=\"color: #123a5a; font-size: 26px; margin: 28px 0 16px;\">\u0e01\u0e32\u0e23\u0e43\u0e0a\u0e49\u0e07\u0e32\u0e19\u0e17\u0e31\u0e48\u0e27\u0e44\u0e1b<\/h2>\n<ul style=\"padding-left: 22px; margin-top: 0;\">\n<li>Oil refining systems<\/li>\n<li>Fertilizer production plants<\/li>\n<li>Pulp and paper processing<\/li>\n<li>Petrochemical engineering<\/li>\n<li>Heat exchanger and condenser systems<\/li>\n<li>Seawater desalination plants<\/li>\n<li>Brine and seawater pipelines<\/li>\n<li>Corrosive industrial water systems<\/li>\n<\/ul>\n<h2 style=\"color: #123a5a; font-size: 26px; margin: 28px 0 16px;\">Why Use Duplex Stainless Steel?<\/h2>\n<p>Duplex stainless steel is selected when a project requires a combination of<br \/>\ncorrosion resistance, strength and long-term mechanical reliability. Its higher<br \/>\nyield strength can support robust valve construction, while its austenitic and<br \/>\nferritic structure provides a balance of toughness, weldability and resistance to<br \/>\nchloride-related corrosion mechanisms.<\/p>\n<p>A duplex stainless steel gate valve is primarily used for isolation rather than<br \/>\ncontinuous throttling. For accurate flow regulation, a dedicated control valve<br \/>\nshould be selected according to the process conditions.<\/p>\n<h2 style=\"color: #123a5a; font-size: 26px; margin: 28px 0 16px;\">WDL Valve Supply Capability<\/h2>\n<p>WDL Valve supplies duplex stainless steel valves for standard and customized<br \/>\nindustrial applications. Product configuration can be developed according to<br \/>\noperating pressure, temperature, medium composition, chloride concentration,<br \/>\nvalve size, connection standard and project requirements.<\/p>\n<p style=\"padding: 16px 18px; border: 1px solid #1378ae; background: #eef6fa; margin-top: 28px;\">Final valve materials, pressure-temperature limits, dimensions and testing requirements shall be confirmed against the approved WDL Valve technical drawing and project datasheet.<\/p>\n<\/article>","protected":false},"excerpt":{"rendered":"<p>WDL Valve duplex stainless steel gate valves provide high strength, chloride corrosion resistance and reliable shut-off for seawater desalination, petrochemical, oil refining, fertilizer and pulp and paper applications.<\/p>","protected":false},"featured_media":610,"comment_status":"open","ping_status":"closed","template":"","meta":{"_kad_post_transparent":"default","_kad_post_title":"","_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":""},"product_brand":[],"product_cat":[35,32,31,44],"product_tag":[],"class_list":["post-611","product","type-product","status-publish","has-post-thumbnail","product_cat-gate-valves","product_cat-valve-materials","product_cat-valve-types","product_cat-duplex-steel-valves","first","instock","shipping-taxable","product-type-simple","entry","content-bg","loop-entry"],"_links":{"self":[{"href":"https:\/\/wdlvalve.com\/th\/wp-json\/wp\/v2\/product\/611","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wdlvalve.com\/th\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/wdlvalve.com\/th\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/wdlvalve.com\/th\/wp-json\/wp\/v2\/comments?post=611"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/wdlvalve.com\/th\/wp-json\/wp\/v2\/media\/610"}],"wp:attachment":[{"href":"https:\/\/wdlvalve.com\/th\/wp-json\/wp\/v2\/media?parent=611"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/wdlvalve.com\/th\/wp-json\/wp\/v2\/product_brand?post=611"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/wdlvalve.com\/th\/wp-json\/wp\/v2\/product_cat?post=611"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/wdlvalve.com\/th\/wp-json\/wp\/v2\/product_tag?post=611"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}