{"id":3989,"date":"2026-01-27T19:05:59","date_gmt":"2026-01-27T12:05:59","guid":{"rendered":"https:\/\/shennan2.tvg.agency\/product\/cum-van-dieu-chinh-ap-suat-hai-chieu-tieu-chuan-dn25\/"},"modified":"2026-02-07T19:57:58","modified_gmt":"2026-02-07T12:57:58","slug":"bidirectional-pressure-regulating-valve-2","status":"publish","type":"product","link":"https:\/\/shennan2.tvg.agency\/en\/product\/bidirectional-pressure-regulating-valve-2\/","title":{"rendered":"Standard Bidirectional Pressure Regulating Valve Assembly DN25"},"content":{"rendered":"<p data-start=\"0\" data-end=\"66\"><strong data-start=\"0\" data-end=\"66\">Standard Bidirectional Pressure Regulating Valve Assembly DN25<\/strong><\/p>\n<p data-start=\"68\" data-end=\"95\"><strong data-start=\"68\" data-end=\"95\">Technical Requirements:<\/strong><\/p>\n<ul data-start=\"96\" data-end=\"695\">\n<li data-start=\"96\" data-end=\"212\">\n<p data-start=\"98\" data-end=\"212\">Must comply with GB50235-1997 <em data-start=\"128\" data-end=\"210\">\u201cCode for Construction and Acceptance of Industrial Metal Pipeline Engineering.\u201d<\/em><\/p>\n<\/li>\n<li data-start=\"213\" data-end=\"309\">\n<p data-start=\"215\" data-end=\"309\">Materials shall comply with GB\/T8163-1999 <em data-start=\"257\" data-end=\"307\">\u201cSeamless Steel Pipes for Fluid Transportation.\u201d<\/em><\/p>\n<\/li>\n<li data-start=\"310\" data-end=\"621\">\n<p data-start=\"312\" data-end=\"621\">After completion of manufacturing, a <strong data-start=\"349\" data-end=\"378\">hydrostatic strength test<\/strong> shall be conducted at <strong data-start=\"401\" data-end=\"412\">5.0 MPa<\/strong> with a holding time of <strong data-start=\"436\" data-end=\"450\">30 minutes<\/strong>, with <strong data-start=\"457\" data-end=\"481\">no leakage permitted<\/strong>. This shall be followed by an <strong data-start=\"512\" data-end=\"534\">air tightness test<\/strong> at <strong data-start=\"538\" data-end=\"549\">3.0 MPa<\/strong> with a holding time of <strong data-start=\"573\" data-end=\"587\">30 minutes<\/strong>, with <strong data-start=\"594\" data-end=\"618\">no leakage permitted<\/strong>.<\/p>\n<\/li>\n<li data-start=\"622\" data-end=\"695\">\n<p data-start=\"624\" data-end=\"695\">After degreasing treatment, all pipe openings shall be properly sealed.<\/p>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p><img fetchpriority=\"high\" decoding=\"async\" class=\"alignnone wp-image-3600 size-medium\" src=\"https:\/\/shennan2.tvg.agency\/wp-content\/uploads\/2026\/01\/van-dn25-300x300.jpg\" alt=\"Standard Bidirectional Pressure Regulating Valve Assembly DN25\" width=\"300\" height=\"300\" srcset=\"https:\/\/shennan2.tvg.agency\/wp-content\/uploads\/2026\/01\/van-dn25-300x300.jpg 300w, https:\/\/shennan2.tvg.agency\/wp-content\/uploads\/2026\/01\/van-dn25-150x150.jpg 150w, https:\/\/shennan2.tvg.agency\/wp-content\/uploads\/2026\/01\/van-dn25-100x100.jpg 100w, https:\/\/shennan2.tvg.agency\/wp-content\/uploads\/2026\/01\/van-dn25.jpg 600w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p data-start=\"697\" data-end=\"722\"><strong data-start=\"697\" data-end=\"722\">Technical Parameters:<\/strong><\/p>\n<p data-start=\"725\" data-end=\"756\"><strong data-start=\"725\" data-end=\"744\">Inlet pressure:<\/strong> \u2264 1.6 MPa<\/p>\n<p data-start=\"759\" data-end=\"798\"><strong data-start=\"759\" data-end=\"782\">Design temperature:<\/strong> \u221240\u00b0C to 60\u00b0C<\/p>\n<p data-start=\"801\" data-end=\"840\"><strong data-start=\"801\" data-end=\"824\">Operating pressure:<\/strong> 0.5 \u2013 0.8 MPa<\/p>\n<p data-start=\"843\" data-end=\"891\"><strong data-start=\"843\" data-end=\"869\">Operating temperature:<\/strong> Ambient temperature<\/p>\n<p data-start=\"894\" data-end=\"942\"><strong data-start=\"894\" data-end=\"905\">Medium:<\/strong> Oxygen, nitrogen, argon, CO\u2082, etc.<\/p>\n","protected":false},"featured_media":3959,"comment_status":"closed","ping_status":"closed","template":"","meta":{"content-type":""},"product_brand":[],"product_cat":[123],"product_tag":[],"bao-gia":[135],"cong-nghe":[],"loai-bon-chua":[],"phan-khuc-gia":[],"dang-bon-chua":[],"class_list":{"0":"post-3989","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-accessory","7":"bao-gia-shipbuilding","9":"first","10":"instock","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/shennan2.tvg.agency\/en\/wp-json\/wp\/v2\/product\/3989","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/shennan2.tvg.agency\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/shennan2.tvg.agency\/en\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/shennan2.tvg.agency\/en\/wp-json\/wp\/v2\/comments?post=3989"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/shennan2.tvg.agency\/en\/wp-json\/wp\/v2\/media\/3959"}],"wp:attachment":[{"href":"https:\/\/shennan2.tvg.agency\/en\/wp-json\/wp\/v2\/media?parent=3989"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/shennan2.tvg.agency\/en\/wp-json\/wp\/v2\/product_brand?post=3989"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/shennan2.tvg.agency\/en\/wp-json\/wp\/v2\/product_cat?post=3989"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/shennan2.tvg.agency\/en\/wp-json\/wp\/v2\/product_tag?post=3989"},{"taxonomy":"bao-gia","embeddable":true,"href":"https:\/\/shennan2.tvg.agency\/en\/wp-json\/wp\/v2\/bao-gia?post=3989"},{"taxonomy":"cong-nghe","embeddable":true,"href":"https:\/\/shennan2.tvg.agency\/en\/wp-json\/wp\/v2\/cong-nghe?post=3989"},{"taxonomy":"loai-bon-chua","embeddable":true,"href":"https:\/\/shennan2.tvg.agency\/en\/wp-json\/wp\/v2\/loai-bon-chua?post=3989"},{"taxonomy":"phan-khuc-gia","embeddable":true,"href":"https:\/\/shennan2.tvg.agency\/en\/wp-json\/wp\/v2\/phan-khuc-gia?post=3989"},{"taxonomy":"dang-bon-chua","embeddable":true,"href":"https:\/\/shennan2.tvg.agency\/en\/wp-json\/wp\/v2\/dang-bon-chua?post=3989"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}