{"id":423,"date":"2026-09-14T01:38:16","date_gmt":"2026-09-14T01:38:16","guid":{"rendered":"https:\/\/wdlvalve.com\/?post_type=product&p=423"},"modified":"2026-09-18T02:14:01","modified_gmt":"2026-09-18T02:14:01","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%b9%81%e0%b8%9a%e0%b8%9a%e0%b8%a1%e0%b8%b5%e0%b8%ab%e0%b8%99%e0%b9%89%e0%b8%b2%e0%b9%81%e0%b8%9b%e0%b8%a5","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%b9%81%e0%b8%9a%e0%b8%9a%e0%b8%a1%e0%b8%b5%e0%b8%ab%e0%b8%99%e0%b9%89%e0%b8%b2%e0%b9%81%e0%b8%9b%e0%b8%a5\/","title":{"rendered":"\u0e27\u0e32\u0e25\u0e4c\u0e27\u0e1b\u0e23\u0e30\u0e15\u0e39\u0e41\u0e1a\u0e1a\u0e21\u0e35\u0e2b\u0e19\u0e49\u0e32\u0e41\u0e1b\u0e25\u0e19 Z41H\/W \u0e17\u0e33\u0e08\u0e32\u0e01\u0e40\u0e2b\u0e25\u0e47\u0e01\u0e01\u0e25\u0e49\u0e32\u0e44\u0e23\u0e49\u0e2a\u0e19\u0e34\u0e21"},"content":{"rendered":"
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WDL Valve Z41H\/W stainless steel gate valve<\/strong> is a flanged, rising-stem wedge gate valve designed for full-open or full-closed isolation service. The gate moves perpendicular to the flow direction, providing a straight-through passage with low flow resistance when fully open.<\/p>\n<\/div>\n

Product Overview<\/h2>\n

The Z41H\/W stainless steel gate valve is used to connect or isolate pipeline media. The wedge gate has two sealing surfaces and is driven toward the seats by the stem and handwheel. Depending on the selected design, the valve can use a solid wedge, flexible wedge, double-disc wedge or parallel-disc arrangement.<\/p>\n

This valve is intended for isolation rather than throttling. Long-term operation in a partially open position may cause vibration, erosion and damage to the gate and seating surfaces. Final material selection must be based on the medium, concentration, temperature, pressure and corrosion conditions.<\/p>\n

Key Product Features<\/h2>\n
    \n
  • Straight-through flow passage and low pressure loss in the fully open position.<\/li>\n
  • Rising stem provides clear visual indication of the valve position.<\/li>\n
  • Flanged ends support secure installation in ASME piping systems.<\/li>\n
  • Bidirectional isolation is available when permitted by the selected seat design.<\/li>\n
  • Stainless steel construction is available for corrosive process media.<\/li>\n
  • Suitable for full-open and full-closed service in chemical and industrial pipelines.<\/li>\n
  • Large handwheel or optional gearbox can be selected according to valve torque.<\/li>\n<\/ul>\n

    Technical Specifications<\/h2>\n
    \n\n\n\n\n\n\n\n\n\n\n\n
    Manufacturer<\/th>\nWDL Valve<\/td>\n<\/tr>\n
    Model<\/th>\nZ41H \/ Z41W<\/td>\n<\/tr>\n
    \u0e1b\u0e23\u0e30\u0e40\u0e20\u0e17\u0e27\u0e32\u0e25\u0e4c\u0e27<\/th>\nStainless steel flanged wedge gate valve<\/td>\n<\/tr>\n
    Stem Design<\/th>\nOutside screw and yoke, rising stem<\/td>\n<\/tr>\n
    Pressure Classes<\/th>\nASME Class 150, Class 300 and Class 600<\/td>\n<\/tr>\n
    Size Range Shown<\/th>\nClass 300: NPS 1\/2\u201310; Class 600: NPS 2\u20138<\/td>\n<\/tr>\n
    Connection<\/th>\nFlanged ends<\/td>\n<\/tr>\n
    \u0e01\u0e32\u0e23\u0e14\u0e33\u0e40\u0e19\u0e34\u0e19\u0e01\u0e32\u0e23<\/th>\nHandwheel; gearbox available according to size and torque<\/td>\n<\/tr>\n
    Service<\/th>\nOn\/off isolation; not recommended for flow regulation<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

    Pressure Test Data<\/h2>\n
    \n\n\n\n\n\n\n\n\n\n\n\n\n\n
    Pressure Class<\/th>\nTest<\/th>\nMPa<\/th>\nPSI<\/th>\n<\/tr>\n<\/thead>\n
    Class 150<\/td>\nShell strength test<\/td>\n3.0<\/td>\n450<\/td>\n<\/tr>\n
    High-pressure water seat test<\/td>\n2.2<\/td>\n314<\/td>\n<\/tr>\n
    Low-pressure air seat test<\/td>\n0.5\u20130.7<\/td>\n72.5\u2013101.5<\/td>\n<\/tr>\n
    Class 300<\/td>\nShell strength test<\/td>\n7.7<\/td>\n1125<\/td>\n<\/tr>\n
    High-pressure water seat test<\/td>\n5.8<\/td>\n815<\/td>\n<\/tr>\n
    Low-pressure air seat test<\/td>\n0.5\u20130.7<\/td>\n72.5\u2013101.5<\/td>\n<\/tr>\n
    Class 600<\/td>\nShell strength test<\/td>\n15.4<\/td>\n2225<\/td>\n<\/tr>\n
    High-pressure water seat test<\/td>\n11.2<\/td>\n1628<\/td>\n<\/tr>\n
    Low-pressure air seat test<\/td>\n0.5\u20130.7<\/td>\n72.5\u2013101.5<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

    Stainless Steel Material Options<\/h2>\n
    \n\n\n\n\n\n\n\n\n
    Cast Grade<\/th>\nRelated Wrought Grade<\/th>\nTypical Service<\/th>\n<\/tr>\n<\/thead>\n
    CF8<\/td>\n0Cr18Ni9 \/ 304<\/td>\nGeneral corrosive service and dilute nitric acid, subject to concentration and temperature<\/td>\n<\/tr>\n
    CF8M<\/td>\n0Cr18Ni12Mo2Ti \/ 316<\/td>\nChemical service requiring molybdenum-bearing stainless steel<\/td>\n<\/tr>\n
    CF3<\/td>\n00Cr18Ni10 \/ 304L<\/td>\nLow-carbon stainless steel service, including selected nitric-acid conditions<\/td>\n<\/tr>\n
    CF3M<\/td>\n00Cr17Ni14Mo2 \/ 316L<\/td>\nLow-carbon molybdenum-bearing stainless steel for selected chemical media<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

    Material compatibility is not determined by grade name alone. Confirm the medium composition, concentration, temperature, pressure and flow conditions before selection.<\/p>\n

    Class 300 Main Dimensions<\/h2>\n
    \n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
    NPS<\/th>\nDN<\/th>\nL<\/th>\nD<\/th>\nT<\/th>\nG<\/th>\nC<\/th>\nn\u2013\u00d8<\/th>\nW<\/th>\nH<\/th>\n<\/tr>\n<\/thead>\n
    1\/2<\/td>\n15<\/td>\n140<\/td>\n95<\/td>\n15<\/td>\n35<\/td>\n66.5<\/td>\n4\u2013\u00d815<\/td>\n100<\/td>\n201<\/td>\n<\/tr>\n
    3\/4<\/td>\n20<\/td>\n152<\/td>\n117<\/td>\n16<\/td>\n43<\/td>\n82.5<\/td>\n4\u2013\u00d819<\/td>\n100<\/td>\n212<\/td>\n<\/tr>\n
    1<\/td>\n25<\/td>\n165<\/td>\n124<\/td>\n18<\/td>\n51<\/td>\n89<\/td>\n4\u2013\u00d819<\/td>\n140<\/td>\n237<\/td>\n<\/tr>\n
    1-1\/2<\/td>\n40<\/td>\n190<\/td>\n156<\/td>\n20.7<\/td>\n73<\/td>\n114.5<\/td>\n4\u2013\u00d822<\/td>\n200<\/td>\n407<\/td>\n<\/tr>\n
    2<\/td>\n50<\/td>\n216<\/td>\n165<\/td>\n22.3<\/td>\n92<\/td>\n127<\/td>\n8\u2013\u00d819<\/td>\n200<\/td>\n424<\/td>\n<\/tr>\n
    2-1\/2<\/td>\n65<\/td>\n241<\/td>\n190<\/td>\n25.4<\/td>\n105<\/td>\n149<\/td>\n8\u2013\u00d822<\/td>\n250<\/td>\n465<\/td>\n<\/tr>\n
    3<\/td>\n80<\/td>\n283<\/td>\n210<\/td>\n28.5<\/td>\n127<\/td>\n168.5<\/td>\n8\u2013\u00d822<\/td>\n250<\/td>\n535<\/td>\n<\/tr>\n
    4<\/td>\n100<\/td>\n305<\/td>\n254<\/td>\n31.8<\/td>\n157<\/td>\n200<\/td>\n8\u2013\u00d822<\/td>\n250<\/td>\n615<\/td>\n<\/tr>\n
    6<\/td>\n150<\/td>\n403<\/td>\n318<\/td>\n36.6<\/td>\n216<\/td>\n270<\/td>\n12\u2013\u00d822<\/td>\n350<\/td>\n795<\/td>\n<\/tr>\n
    8<\/td>\n200<\/td>\n419<\/td>\n381<\/td>\n41.3<\/td>\n270<\/td>\n330<\/td>\n12\u2013\u00d825<\/td>\n400<\/td>\n1012<\/td>\n<\/tr>\n
    10<\/td>\n250<\/td>\n457<\/td>\n444<\/td>\n47.7<\/td>\n342<\/td>\n387.5<\/td>\n16\u2013\u00d829<\/td>\n450<\/td>\n1231<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

    Class 600 Main Dimensions<\/h2>\n
    \n\n\n\n\n\n\n\n\n\n\n
    NPS<\/th>\nDN<\/th>\nL<\/th>\nD<\/th>\nT<\/th>\nG<\/th>\nC<\/th>\nn\u2013\u00d8<\/th>\nW<\/th>\nH<\/th>\n<\/tr>\n<\/thead>\n
    2<\/td>\n50<\/td>\n292<\/td>\n165<\/td>\n25.4<\/td>\n92<\/td>\n127<\/td>\n8\u2013\u00d819<\/td>\n250<\/td>\n458<\/td>\n<\/tr>\n
    2-1\/2<\/td>\n65<\/td>\n330<\/td>\n190<\/td>\n28.6<\/td>\n105<\/td>\n149<\/td>\n8\u2013\u00d822<\/td>\n250<\/td>\n485<\/td>\n<\/tr>\n
    3<\/td>\n80<\/td>\n356<\/td>\n210<\/td>\n31.8<\/td>\n127<\/td>\n168<\/td>\n8\u2013\u00d822<\/td>\n250<\/td>\n570<\/td>\n<\/tr>\n
    4<\/td>\n100<\/td>\n432<\/td>\n273<\/td>\n38.1<\/td>\n157<\/td>\n216<\/td>\n8\u2013\u00d825<\/td>\n350<\/td>\n690<\/td>\n<\/tr>\n
    6<\/td>\n150<\/td>\n559<\/td>\n356<\/td>\n47.7<\/td>\n216<\/td>\n292<\/td>\n12\u2013\u00d829<\/td>\n450<\/td>\n910<\/td>\n<\/tr>\n
    8<\/td>\n200<\/td>\n660<\/td>\n419<\/td>\n55.6<\/td>\n270<\/td>\n349<\/td>\n12\u2013\u00d832<\/td>\n500<\/td>\n1064<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

    All dimensions are reference values in millimetres. The flange drilling, face-to-face dimension and operating envelope must be checked against the approved project drawing.<\/p>\n

    \u0e01\u0e32\u0e23\u0e43\u0e0a\u0e49\u0e07\u0e32\u0e19\u0e17\u0e31\u0e48\u0e27\u0e44\u0e1b<\/h2>\n
      \n
    • Chemical and petrochemical process pipelines<\/li>\n
    • Oil and gas isolation service<\/li>\n
    • Water treatment and industrial utility systems<\/li>\n
    • Power generation and general industrial plants<\/li>\n
    • Selected nitric-acid and corrosive-media service after material review<\/li>\n<\/ul>\n

      Ordering Information<\/h2>\n

      For valve selection and quotation, please provide the NPS or DN, ASME pressure class, process medium, concentration, operating and design temperature, operating and design pressure, required stainless steel grade, flange facing, trim material, testing requirements and quantity.<\/p>\n

      Dimensions and test values were organised from the supplied source data. Material suitability, test pressure, flange dimensions and valve configuration are subject to the final approved WDL Valve drawing and technical datasheet.<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"

      Z41H\/W stainless steel flanged gate valve provides reliable full-open\/full-close isolation for ASME Class 150\u2013600 pipelines, with corrosion-resistant stainless steel materials and low flow resistance for industrial fluid service.<\/p>","protected":false},"featured_media":871,"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":[72],"product_cat":[35,32,31,41],"product_tag":[],"class_list":["post-423","product","type-product","status-publish","has-post-thumbnail","product_brand-wdl-valve","product_cat-gate-valves","product_cat-valve-materials","product_cat-valve-types","product_cat-stainless-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\/423","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=423"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/wdlvalve.com\/th\/wp-json\/wp\/v2\/media\/871"}],"wp:attachment":[{"href":"https:\/\/wdlvalve.com\/th\/wp-json\/wp\/v2\/media?parent=423"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/wdlvalve.com\/th\/wp-json\/wp\/v2\/product_brand?post=423"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/wdlvalve.com\/th\/wp-json\/wp\/v2\/product_cat?post=423"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/wdlvalve.com\/th\/wp-json\/wp\/v2\/product_tag?post=423"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}