{"id":517,"date":"2026-09-16T03:21:02","date_gmt":"2026-09-16T03:21:02","guid":{"rendered":"https:\/\/wdlvalve.com\/?post_type=product&#038;p=517"},"modified":"2026-09-18T03:14:48","modified_gmt":"2026-09-18T03:14:48","slug":"van-buom-ba-do-lech-kieu-mat-bich-hoat-dong-bang-khi-nen","status":"publish","type":"product","link":"https:\/\/wdlvalve.com\/vi\/product\/van-buom-ba-do-lech-kieu-mat-bich-hoat-dong-bang-khi-nen\/","title":{"rendered":"Van b\u01b0\u1edbm ba \u0111\u1ed9 l\u1ec7ch n\u1ed1i m\u1eb7t b\u00edch kh\u00ed n\u00e9n"},"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;\">Van b\u01b0\u1edbm ba \u0111\u1ed9 l\u1ec7ch n\u1ed1i m\u1eb7t b\u00edch kh\u00ed n\u00e9n<\/h2>\n<p>WDL Valve pneumatic flanged triple-offset butterfly valve is designed for reliable<br \/>\nflow regulation and shut-off in industrial pipeline systems. The valve uses a<br \/>\nprecision J-shaped elastic sealing ring and a multilayer metal hard-sealing structure.<br \/>\nIts triple-offset design reduces friction between the sealing surfaces and provides<br \/>\nstable bidirectional sealing performance.<\/p>\n<p>The valve is widely used in metallurgy, power generation, petroleum, petrochemical,<br \/>\nwater supply, drainage and municipal construction systems. Depending on the selected<br \/>\nbody and sealing materials, the valve can be used for media temperatures up to<br \/>\n425\u00b0C for carbon steel valves and up to 650\u00b0C for stainless steel valves.<\/p>\n<h2 style=\"color: #123a5a; font-size: 26px; margin: 28px 0 16px;\">Main Features<\/h2>\n<ul style=\"padding-left: 22px; margin-top: 0;\">\n<li>Triple-offset sealing design with low friction and reduced wear.<\/li>\n<li>J-shaped stainless steel elastic sealing ring.<\/li>\n<li>Multilayer metal hard sealing structure for high-temperature service.<\/li>\n<li>Stainless steel sealing surfaces with good corrosion resistance.<\/li>\n<li>Cobalt-based hard alloy overlay on the disc sealing surface.<\/li>\n<li>Bidirectional sealing capability.<\/li>\n<li>Self-tightening sealing performance during valve closing.<\/li>\n<li>Large-size discs use a truss-type structure for high strength.<\/li>\n<li>Large flow area and low flow resistance.<\/li>\n<li>Pneumatic actuator installation in multiple positions for flexible operation.<\/li>\n<li>Suitable for horizontal, vertical and other installation positions.<\/li>\n<\/ul>\n<h2 style=\"color: #123a5a; font-size: 26px; margin: 28px 0 16px;\">Pneumatic Operation<\/h2>\n<p>The pneumatic actuator provides fast and reliable quarter-turn operation. The actuator<br \/>\ncan be arranged in different positions according to pipeline layout and operating<br \/>\nrequirements. The valve series can also be supplied with worm gear, electric or<br \/>\nhydraulic operation when required by the project.<\/p>\n<h2 style=\"color: #123a5a; font-size: 26px; margin: 28px 0 16px;\">Th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt<\/h2>\n<div style=\"width: 100%; overflow-x: auto; -webkit-overflow-scrolling: touch; margin-bottom: 28px;\">\n<table style=\"width: 100%; min-width: 760px; 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;\">M\u1eb7t h\u00e0ng<\/th>\n<th style=\"padding: 11px; border: 1px solid #111111!important; background: #eaf3f8; text-align: left;\">Specification<\/th>\n<\/tr>\n<tr>\n<td style=\"padding: 11px; border: 1px solid #111111!important;\">Lo\u1ea1i s\u1ea3n ph\u1ea9m<\/td>\n<td style=\"padding: 11px; border: 1px solid #111111!important;\">Pneumatic flanged triple-offset butterfly valve<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 11px; border: 1px solid #111111!important;\">Nominal Diameter<\/td>\n<td style=\"padding: 11px; border: 1px solid #111111!important;\">DN50\u2013DN2000<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 11px; border: 1px solid #111111!important;\">Nominal Pressure<\/td>\n<td style=\"padding: 11px; border: 1px solid #111111!important;\">PN0.6, PN1.0, PN1.6 and PN2.5 MPa<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 11px; border: 1px solid #111111!important;\">Sealing Design<\/td>\n<td style=\"padding: 11px; border: 1px solid #111111!important;\">Triple-offset multilayer metal hard seal with J-shaped elastic sealing ring<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 11px; border: 1px solid #111111!important;\">Carbon Steel Temperature<\/td>\n<td style=\"padding: 11px; border: 1px solid #111111!important;\">-29\u00b0C to +425\u00b0C<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 11px; border: 1px solid #111111!important;\">Stainless Steel Temperature<\/td>\n<td style=\"padding: 11px; border: 1px solid #111111!important;\">-40\u00b0C to +650\u00b0C<\/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;\">Water, air, natural gas, oil and mildly corrosive fluids<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 11px; border: 1px solid #111111!important;\">Leakage Standard<\/td>\n<td style=\"padding: 11px; border: 1px solid #111111!important;\">GB\/T 13927-1992<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 11px; border: 1px solid #111111!important;\">Ho\u1ea1t \u0111\u1ed9ng<\/td>\n<td style=\"padding: 11px; border: 1px solid #111111!important;\">Pneumatic actuator; worm gear, electric and hydraulic options available<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h2 style=\"color: #123a5a; font-size: 26px; margin: 28px 0 16px;\">D\u1eef li\u1ec7u th\u1eed nghi\u1ec7m \u00e1p su\u1ea5t<\/h2>\n<div style=\"width: 100%; overflow-x: auto; -webkit-overflow-scrolling: touch; margin-bottom: 28px;\">\n<table style=\"width: 100%; min-width: 650px; border: 1px solid #111111!important; border-collapse: collapse; background: #ffffff; text-align: center;\" border=\"1\" rules=\"all\" cellspacing=\"0\" cellpadding=\"0\">\n<thead>\n<tr>\n<th style=\"padding: 11px; border: 1px solid #111111!important; background: #eaf3f8;\">Nominal Pressure PN<\/th>\n<th style=\"padding: 11px; border: 1px solid #111111!important; background: #eaf3f8;\">Seal Test Pressure<\/th>\n<th style=\"padding: 11px; border: 1px solid #111111!important; background: #eaf3f8;\">Shell Strength Test Pressure<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"padding: 10px; border: 1px solid #111111!important;\">0.6 MPa<\/td>\n<td style=\"padding: 10px; border: 1px solid #111111!important;\">0.66 MPa<\/td>\n<td style=\"padding: 10px; border: 1px solid #111111!important;\">0.90 MPa<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px; border: 1px solid #111111!important;\">1.0 MPa<\/td>\n<td style=\"padding: 10px; border: 1px solid #111111!important;\">1.10 MPa<\/td>\n<td style=\"padding: 10px; border: 1px solid #111111!important;\">1.50 MPa<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px; border: 1px solid #111111!important;\">1.6 MPa<\/td>\n<td style=\"padding: 10px; border: 1px solid #111111!important;\">1.76 MPa<\/td>\n<td style=\"padding: 10px; border: 1px solid #111111!important;\">2.40 MPa<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px; border: 1px solid #111111!important;\">2.5 MPa<\/td>\n<td style=\"padding: 10px; border: 1px solid #111111!important;\">2.75 MPa<\/td>\n<td style=\"padding: 10px; border: 1px solid #111111!important;\">3.75 MPa<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h2 style=\"color: #123a5a; font-size: 26px; margin: 28px 0 16px;\">C\u00e1c \u1ee9ng d\u1ee5ng \u0111i\u1ec3n h\u00ecnh<\/h2>\n<ul style=\"padding-left: 22px; margin-top: 0;\">\n<li>Metallurgical plants<\/li>\n<li>Power generation systems<\/li>\n<li>Petroleum and petrochemical pipelines<\/li>\n<li>Water treatment and water supply systems<\/li>\n<li>Municipal drainage systems<\/li>\n<li>High-temperature gas and fluid pipelines<\/li>\n<li>Industrial flow regulation and shut-off service<\/li>\n<\/ul>\n<h2 style=\"color: #123a5a; font-size: 26px; margin: 28px 0 16px;\">Why Choose a Triple-Offset Butterfly Valve?<\/h2>\n<p>The triple-offset structure allows the disc to move away from the seat during the<br \/>\nopening process. This reduces sliding contact, minimizes sealing-surface wear and<br \/>\nsupports a longer operating life. The metal sealing arrangement also provides<br \/>\nimproved resistance to high temperature, corrosion and media erosion compared with<br \/>\nconventional soft-seated butterfly valves.<\/p>\n<p style=\"padding: 16px 18px; border: 1px solid #1378ae; background: #eef6fa; margin-top: 28px;\">Dimensions, materials, pressure-temperature limits and actuator specifications are reference values based on the supplied technical information. Final specifications shall be confirmed against the approved WDL Valve drawing and project datasheet.<\/p>\n<\/article>","protected":false},"excerpt":{"rendered":"<p>Van b\u01b0\u1edbm ba \u0111\u1ed9 l\u1ec7ch c\u00f3 m\u1eb7t b\u00edch kh\u00ed n\u00e9n c\u1ee7a WDL Valve s\u1eed d\u1ee5ng v\u00f2ng \u0111\u1ec7m k\u00edn \u0111\u00e0n h\u1ed3i h\u00ecnh ch\u1eef J v\u00e0 c\u1ea5u tr\u00fac \u0111\u1ec7m k\u00edn c\u1ee9ng b\u1eb1ng kim lo\u1ea1i nhi\u1ec1u l\u1edbp. S\u1ea3n ph\u1ea9m n\u00e0y th\u00edch h\u1ee3p \u0111\u1ec3 \u0111i\u1ec1u ti\u1ebft l\u01b0u l\u01b0\u1ee3ng v\u00e0 ng\u1eaft d\u00f2ng trong c\u00e1c \u0111\u01b0\u1eddng \u1ed1ng d\u1eabn n\u01b0\u1edbc, kh\u00ed, kh\u00ed t\u1ef1 nhi\u00ean, d\u1ea7u v\u00e0 ch\u1ea5t l\u1ecfng c\u00f3 t\u00ednh \u0103n m\u00f2n nh\u1eb9 \u1edf nhi\u1ec7t \u0111\u1ed9 l\u00ean \u0111\u1ebfn 425\u00b0C.<\/p>","protected":false},"featured_media":518,"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":[34,32,31,40,41],"product_tag":[],"class_list":["post-517","product","type-product","status-publish","has-post-thumbnail","product_brand-wdl-valve","product_cat-butterfly-valves","product_cat-valve-materials","product_cat-valve-types","product_cat-carbon-steel-valves","product_cat-stainless-steel-valves","first","instock","shipping-taxable","product-type-simple","entry","content-bg","loop-entry"],"_links":{"self":[{"href":"https:\/\/wdlvalve.com\/vi\/wp-json\/wp\/v2\/product\/517","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wdlvalve.com\/vi\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/wdlvalve.com\/vi\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/wdlvalve.com\/vi\/wp-json\/wp\/v2\/comments?post=517"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/wdlvalve.com\/vi\/wp-json\/wp\/v2\/media\/518"}],"wp:attachment":[{"href":"https:\/\/wdlvalve.com\/vi\/wp-json\/wp\/v2\/media?parent=517"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/wdlvalve.com\/vi\/wp-json\/wp\/v2\/product_brand?post=517"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/wdlvalve.com\/vi\/wp-json\/wp\/v2\/product_cat?post=517"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/wdlvalve.com\/vi\/wp-json\/wp\/v2\/product_tag?post=517"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}