{"id":2735,"date":"2018-10-11T06:40:16","date_gmt":"2018-10-11T04:40:16","guid":{"rendered":"http:\/\/www.inst-sim.com\/1\/?p=2735"},"modified":"2018-10-11T11:54:50","modified_gmt":"2018-10-11T09:54:50","slug":"rubber-flexible-check-valve","status":"publish","type":"post","link":"https:\/\/www.inst-sim.com\/1\/valves\/rubber-flexible-check-valve\/","title":{"rendered":"\u0635\u0645\u0627\u0645 \u0639\u062f\u0645 \u0627\u0644\u0631\u062c\u0648\u0639 \u0627\u0644\u0645\u0631\u0646 Rubber Flexible Check Valve"},"content":{"rendered":"<h2><span style=\"color: #ff6600;\">\u0635\u0645\u0627\u0645 \u0645\u0646\u0642\u0627\u0631 \u0627\u0644\u0628\u0637\u0629 Duckbill Flexible Rubber Check Valve<\/span><\/h2>\n<p>*<\/p>\n<p dir=\"ltr\" style=\"text-align: justify;\">The flexible sleeve provides maximum flow with a minimum pressure drop across the valve at all times. The &#8220;duckbill&#8221; concept check valve has been in use for over 100 years in waterworks and commonly accepted for use in industrial process piping systems and in waste and storm water or sewer piping systems.<\/p>\n<p><img loading=\"lazy\" class=\"aligncenter wp-image-2745 size-full\" src=\"http:\/\/www.inst-sim.com\/1\/wp-content\/uploads\/2018\/10\/Duckbill-Valve-onOff.png\" alt=\"\" width=\"791\" height=\"298\" srcset=\"https:\/\/www.inst-sim.com\/1\/wp-content\/uploads\/2018\/10\/Duckbill-Valve-onOff.png 791w, https:\/\/www.inst-sim.com\/1\/wp-content\/uploads\/2018\/10\/Duckbill-Valve-onOff-300x113.png 300w, https:\/\/www.inst-sim.com\/1\/wp-content\/uploads\/2018\/10\/Duckbill-Valve-onOff-768x289.png 768w\" sizes=\"(max-width: 791px) 100vw, 791px\" \/><\/p>\n<p>*<\/p>\n<p style=\"text-align: justify;\">\u062a\u0648\u0641\u0631 \u0627\u0644\u062c\u0644\u0628\u0629 \u0627\u0644\u0645\u0631\u0646\u0629 <span style=\"color: #0000ff;\">Flexible Sleeve<\/span> \u0623\u0642\u0635\u0649 \u062a\u062f\u0641\u0642 \u0645\u0639 \u0623\u0642\u0644 \u0627\u0646\u062e\u0641\u0627\u0636 \u0644\u0644\u0636\u063a\u0637 <span style=\"color: #0000ff;\">Pressure Drop<\/span> \u0639\u0628\u0631 \u0627\u0644\u0635\u0645\u0627\u0645 \u0641\u064a \u062c\u0645\u064a\u0639 \u0627\u0644\u0623\u0648\u0642\u0627\u062a . \u0644\u0642\u062f \u062a\u0645 \u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0641\u0643\u0631\u0629 \u0645\u0646\u0642\u0627\u0631 \u0627\u0644\u0628\u0637\u0629 <span style=\"color: #0000ff;\">Duckbill<\/span> \u0643\u0635\u0645\u0627\u0645 \u0639\u062f\u0645 \u0631\u062c\u0648\u0639 \u0644\u0623\u0643\u062b\u0631 \u0645\u0646 100 \u0639\u0627\u0645 \u0641\u064a \u0623\u0639\u0645\u0627\u0644 \u0627\u0644\u0645\u064a\u0627\u0647 \u0648\u0647\u064a \u0645\u0642\u0628\u0648\u0644\u0629 \u0644\u0644\u0625\u0633\u062a\u062e\u062f\u0627\u0645 \u0641\u064a \u0623\u0646\u0638\u0645\u0629 \u0623\u0646\u0627\u0628\u064a\u0628 \u0627\u0644\u0639\u0645\u0644\u064a\u0627\u062a \u0627\u0644\u0635\u0646\u0627\u0639\u064a\u0629 \u0648\u0641\u064a \u0623\u0646\u0638\u0645\u0629 \u0623\u0646\u0627\u0628\u064a\u0628 \u0627\u0644\u0635\u0631\u0641 \u0648\u0645\u064a\u0627\u0647 \u0627\u0644\u0623\u0645\u0637\u0627\u0631 <span style=\"color: #0000ff;\">Storm Water<\/span> \u0623\u0648 \u0627\u0644\u0645\u062c\u0627\u0631\u064a <span style=\"color: #0000ff;\">Sewer Piping Systems<\/span> .<\/p>\n<p><img loading=\"lazy\" class=\"aligncenter wp-image-2740 size-full\" src=\"http:\/\/www.inst-sim.com\/1\/wp-content\/uploads\/2018\/10\/Duckbill-valve-Ani-Ar-En1-Large.gif\" alt=\"\" width=\"412\" height=\"470\" \/><\/p>\n<p style=\"text-align: center;\"><span style=\"color: #0000ff;\">\u0645\u062d\u0627\u0643\u0627\u0629 \u0645\u062a\u062d\u0631\u0643\u0629 \u062a\u0628\u064a\u0646 \u0641\u0643\u0631\u0629 \u0627\u0644\u0639\u0645\u0644 \u0627\u0644\u062e\u0627\u0635\u0629 \u0628\u0635\u0645\u0627\u0645 \u0645\u0646\u0642\u0627\u0631 \u0627\u0644\u0628\u0637\u0629 Duckbill Valve<\/span><\/p>\n<p>*<\/p>\n<h2><span style=\"color: #ff6600;\">\u0641\u0643\u0631\u0629 \u0627\u0644\u0639\u0645\u0644 The Principal Of Operation<\/span><\/h2>\n<p style=\"text-align: justify;\">\u0641\u0643\u0631\u0629 \u0627\u0644\u0639\u0645\u0644 \u0627\u0644\u062e\u0627\u0635\u0629 \u0628\u0635\u0645\u0627\u0645 \u0645\u0646\u0642\u0627\u0631 \u0627\u0644\u0628\u0637\u0629 <span style=\"color: #0000ff;\">Duckbill Valve<\/span> \u0628\u0633\u064a\u0637\u0629 \u0644\u0644\u063a\u0627\u064a\u0629 \u060c \u062d\u064a\u062b \u064a\u062f\u0641\u0639 \u0636\u063a\u0637 \u0627\u0644\u0645\u0646\u0628\u0639\u00a0<span style=\"color: #0000ff;\">Upstream Pressure<\/span> \u0634\u0641\u062a\u064a \u0627\u0644\u0635\u0645\u0627\u0645 \u0623\u0648 \u0645\u0646\u0642\u0627\u0631 \u0627\u0644\u0628\u0637\u0629 <span style=\"color: #0000ff;\">Duckbill<\/span> \u0625\u0644\u064a \u0627\u0644\u062a\u0628\u0627\u0639\u062f \u0639\u0646 \u0628\u0639\u0636\u0647\u0645\u0627 \u0627\u0644\u0628\u0639\u0636 \u0645\u0645\u0627 \u064a\u0639\u0645\u0644 \u0639\u0644\u064a \u0627\u0644\u0633\u0645\u0627\u062d \u0628\u0627\u0644\u0633\u0631\u064a\u0627\u0646 . \u0648\u0643\u0644\u0645\u0627 \u0632\u0627\u062f \u0627\u0644\u0636\u063a\u0637 \u0623\u0648 \u0645\u0639\u062f\u0644 \u0627\u0644\u0633\u0631\u064a\u0627\u0646 \u0632\u0627\u062f\u062a \u0641\u062a\u062d\u0629 \u0627\u0644\u0635\u0645\u0627\u0645 \u0623\u0643\u062b\u0631 . \u0648\u062a\u0633\u0645\u062d \u0647\u0630\u0647 \u0627\u0644\u0637\u0631\u064a\u0642\u0629 \u0628\u062e\u0631\u0648\u062c \u0627\u0644\u0645\u0648\u0627\u062f \u0627\u0644\u0635\u0644\u0628\u0629 \u062f\u0648\u0646 \u0639\u0648\u0627\u0626\u0642 \u0648\u0628\u0623\u0642\u0644 \u0641\u0642\u062f \u0644\u0644\u0636\u063a\u0637 .<\/p>\n<p style=\"text-align: justify;\">\u0628\u064a\u0646\u0645\u0627 \u0641\u064a \u062d\u0627\u0644\u0629 \u0627\u0644\u0636\u063a\u0637 \u0627\u0644\u0639\u0643\u0633\u064a <span style=\"color: #0000ff;\">Back Pressure<\/span> \u0623\u0648 \u0627\u0644\u0633\u0631\u064a\u0627\u0646 \u0641\u064a \u0627\u0644\u0625\u062a\u062c\u0627\u0647 \u0627\u0644\u0639\u0643\u0633\u064a <span style=\"color: #0000ff;\">Back Flow<\/span> \u064a\u0646\u0636\u063a\u0637 \u0634\u0641\u062a\u064a \u0627\u0644\u0635\u0645\u0627\u0645 \u0639\u0644\u064a \u064a\u0639\u0636\u0647\u0645\u0627 \u0628\u0625\u062d\u0643\u0627\u0645 \u0645\u0645\u0627 \u064a\u0645\u0646\u0639 \u0627\u0644\u0633\u0631\u064a\u0627\u0646 \u0627\u0644\u0639\u0643\u0633\u064a .<\/p>\n<p><img loading=\"lazy\" class=\"aligncenter wp-image-2742 size-full\" src=\"http:\/\/www.inst-sim.com\/1\/wp-content\/uploads\/2018\/10\/Duckbill-valve-Ani2.gif\" alt=\"\" width=\"358\" height=\"287\" \/><\/p>\n<p style=\"text-align: center;\"><span style=\"color: #0000ff;\">\u0643\u0644\u0645\u0627 \u0632\u0627\u062f \u0627\u0644\u0636\u063a\u0637 \u0623\u0648 \u0645\u0639\u062f\u0644 \u0627\u0644\u0633\u0631\u064a\u0627\u0646 \u0632\u0627\u062f\u062a \u0641\u062a\u062d\u0629 \u0627\u0644\u0635\u0645\u0627\u0645 \u0623\u0643\u062b\u0631<\/span><\/p>\n<p>*<\/p>\n<p dir=\"ltr\" style=\"text-align: justify;\">The principal of operation is simple. Upstream pressure in the valve forces the lips or &#8220;duckbill&#8221; apart to permit flow. As pressure or flow increases, the lips open further, allowing more flow. This feature allows solids to pass unhindered with low pressure loss.<\/p>\n<p dir=\"ltr\" style=\"text-align: justify;\">When there is backpressure or reverse flow, the lips squeeze tightly together, preventing backflow.<\/p>\n<p>*<\/p>\n<h2><span style=\"color: #ff6600;\">\u0623\u0646\u0648\u0627\u0639 \u0623\u0637\u0631\u0627\u0641 \u0627\u0644\u0648\u0635\u064a\u0644<\/span><\/h2>\n<table style=\"border-collapse: collapse; width: 100%;\" border=\"1\">\n<tbody>\n<tr>\n<td style=\"width: 50%;\">\u0634\u0641\u0629 <span style=\"color: #0000ff;\">Flange :\u00a0Flanged Rubber Flexible Check Valve<\/span><\/td>\n<td style=\"width: 50%;\"><img loading=\"lazy\" class=\"size-full wp-image-2736 aligncenter\" src=\"http:\/\/www.inst-sim.com\/1\/wp-content\/uploads\/2018\/10\/Flange.jpg\" alt=\"\" width=\"120\" height=\"100\" \/><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 50%;\">\u0648\u0635\u0644\u0629\u00a0<span style=\"color: #0000ff;\">Socket Connection<\/span><\/td>\n<td style=\"width: 50%;\"><img loading=\"lazy\" class=\"size-full wp-image-2737 aligncenter\" src=\"http:\/\/www.inst-sim.com\/1\/wp-content\/uploads\/2018\/10\/Socket-Connection.jpg\" alt=\"\" width=\"120\" height=\"100\" \/><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 50%;\">\u0637\u0631\u0641 \u0648\u0635\u064a\u0644 \u0645\u0631\u0628\u0639 \u0627\u0644\u0634\u0643\u0644\u00a0<span style=\"color: #0000ff;\">Square Hole<\/span><\/td>\n<td style=\"width: 50%;\"><img loading=\"lazy\" class=\"size-full wp-image-2738 aligncenter\" src=\"http:\/\/www.inst-sim.com\/1\/wp-content\/uploads\/2018\/10\/Square-Hole.jpg\" alt=\"\" width=\"120\" height=\"100\" \/><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 50%;\">\u0627\u0644\u0646\u0648\u0639\u00a0<span style=\"color: #0000ff;\">Insertable<\/span> \u0623\u0648 <span style=\"color: #0000ff;\">In-Line Duckbill Check Valve<\/span><\/td>\n<td style=\"width: 50%;\"><img loading=\"lazy\" class=\"size-full wp-image-2744 aligncenter\" src=\"http:\/\/www.inst-sim.com\/1\/wp-content\/uploads\/2018\/10\/duckbill-insert.jpg\" alt=\"\" width=\"237\" height=\"165\" \/><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>.<\/p>\n<h2><span style=\"color: #ff6600;\">\u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062a Features<\/span><\/h2>\n<ul style=\"list-style-type: square;\">\n<li>\u062a\u0634\u063a\u064a\u0644 \u0647\u0627\u062f\u0626 <span style=\"color: #0000ff;\">Quiet operation<\/span> .<\/li>\n<li>\u0639\u062f\u0645 \u0648\u062c\u0648\u062f \u0627\u0646\u0635\u0641\u0627\u0642 <span style=\"color: #0000ff;\">Non slamming<\/span> .<\/li>\n<li>\u0635\u064a\u0627\u0646\u0629 \u0628\u0633\u064a\u0637\u0629 <span style=\"color: #0000ff;\">Minimal maintenance<\/span> .<\/li>\n<li>\u0641\u0642\u062f \u0628\u0633\u064a\u0637 \u0641\u064a \u0627\u0644\u0636\u063a\u0637 <span style=\"color: #0000ff;\">Low head loss<\/span> .<\/li>\n<\/ul>\n<p>*<\/p>\n<h2><span style=\"color: #ff6600;\">\u062a\u0637\u0628\u064a\u0642\u0627\u062a Applications<\/span><\/h2>\n<p dir=\"ltr\">\u2022 Sewer Interceptors<br \/>\n\u2022 Outfall Lines<br \/>\n\u2022 Wet\/Dry Wells<br \/>\n\u2022 Storm water discharge<br \/>\n\u2022 Submerged outfall diffuser nozzle<\/p>\n<p>*<\/p>\n<h2><span style=\"color: #ff6600;\">\u0627\u0644\u0635\u064a\u0627\u0646\u0629 Maintenance<\/span><\/h2>\n<p style=\"text-align: justify;\">\u064a\u062c\u0628 \u0625\u062c\u0631\u0627\u0621 \u0641\u062d\u0635 \u062f\u0648\u0631\u064a \u0644\u0644\u062a\u062d\u0642\u0642 \u0645\u0646 \u0623\u062f\u0627\u0621 \u0627\u0644\u0635\u0645\u0627\u0645 :<\/p>\n<ul style=\"text-align: justify;\">\n<li>\ufed3\ufea4\ufeba \u0627\ufef7\ufee7\ufe92\ufeee\u0628 \u0648\u0627\ufedf\ufed0\ufec4\ufe8e\u0621 \u0644\u0644\u0628\u062d\u062b \u0639\u0646 \u0623\u064a\u0629 \ufed8\ufec4\ufeca \u0623\u0648 \u0634\u0642 . \u0644\u0627 \u062a\u0646\u0632\u0639\u062c \u0625\u0630\u0627 \u062a\u0643\u0648\u0646\u062a \u0634\u0642\u0648\u0642 \u0635\u063a\u064a\u0631\u0629 \u0641\u064a \u0627\u0644\u063a\u0644\u0627\u0641 \u0627\u0644\u062e\u0627\u0631\u062c\u064a. \u0625\u0630\u0627 \u0644\u0632\u0645 \u0627\u0644\u0623\u0645\u0631 \u060c \u064a\u0645\u0643\u0646 \u0625\u062c\u0631\u0627\u0621 \u0625\u0635\u0644\u0627\u062d\u0627\u062a \u0641\u064a \u0627\u0644\u0645\u0648\u0642\u0639 \u0648\u0644\u062d\u0627\u0645\u0647\u0627 \u0628\u0645\u0627\u062f\u0629 \u0644\u0627\u0635\u0642\u0629 \u0645\u0631\u0643\u0628\u0629 <span style=\"color: #0000ff;\">Compound<\/span> . \u0625\u0630\u0627 \u0644\u0648\u062d\u0638 \u0648\u062c\u0648\u062f \u0634\u0642\u0648\u0642 <span style=\"color: #0000ff;\">Fissures<\/span> \u0643\u0628\u064a\u0631\u0629 \u0623\u062f\u062a \u0625\u0644\u064a \u0643\u0634\u0641 \u0627\u0644\u0646\u0633\u064a\u062c \u0627\u0644\u062f\u0627\u062e\u0644\u064a \u0648\u062a\u0645\u0632\u0642\u0647 \u060c \u0641\u064a\u062c\u0628 \u0627\u0633\u062a\u0628\u062f\u0627\u0644 \u0627\u0644\u0635\u0645\u0627\u0645.<\/li>\n<li>\u0625\u0630\u0627 \u0644\u0648\u062d\u0638 \u0648\u062c\u0648\u062f \u0628\u062b\u0648\u0631 <span style=\"color: #0000ff;\">Blisters<\/span> \u0623\u0648 \u062a\u0634\u0648\u0647 <span style=\"color: #0000ff;\">Deformation<\/span> \u0623\u0648 \u0627\u0646\u0641\u0635\u0627\u0644 \u0641\u064a \u0627\u0644\u0637\u0628\u0642\u0627\u062a <span style=\"color: #0000ff;\">Delamination<\/span> \u062f\u0627\u062e\u0644 \u0627\u0644\u0635\u0645\u0627\u0645 \u060c \u0641\u0647\u0630\u0627 \u064a\u062f\u0644 \u0639\u0644\u0649 \u0623\u0646 \u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u0633\u0627\u0626\u0644 \u0623\u0639\u0644\u0649 \u0645\u0646 \u0627\u0644\u0645\u062a\u0648\u0642\u0639 \u0648\u062a\u0639\u0645\u0644 \u0639\u0644\u064a \u0625\u062a\u0644\u0627\u0641 \u0627\u0644\u0623\u0646\u0628\u0648\u0628 \u060c \u0648\u064a\u062c\u0628 \u0627\u0633\u062a\u0628\u062f\u0627\u0644 \u0627\u0644\u0635\u0645\u0627\u0645 \u0641\u064a \u0623\u0642\u0631\u0628 \u0648\u0642\u062a \u0645\u0645\u0643\u0646.<\/li>\n<li>\u0627\ufed3\ufea4\ufeba \u0627\ufedf\ufebc\ufee4\ufe8e\u0645 \u0644\u0644\u0628\u062d\u062b \u0639\u0646 \u0623\u064a\u0629 \u0623\u062c\u0633\u0627\u0645 \u063a\u0631\u064a\u0628\u0629 \u0639\u0627\u0644\u0642\u0629 \u062f\u0627\u062e\u0644 \u0627\u0644\u0635\u0645\u0627\u0645 \u060c \u0648\u0627\ufedf\ufe98\ufef2 \u0631\ufe91\ufee4\ufe8e \ufe97\ufedc\ufeee\u0646 \ufed7\ufeaa \u0639\u0644\u0642\u062a \ufe91\ufef4\ufee6 \ufeb7\ufed4\ufe98\ufef2 \u0627\ufedf\ufebc\ufee4\ufe8e\u0645 \u0648\ufed7\ufeaa \ufe97\ufee4\ufee8\ufeca \u0627\ufedf\ufebc\ufee4\ufe8e\u0645 \ufee3\ufee6 \u0627\u0644\u0625\u063a\u0644\u0627\u0642 \u0623\u0645\u0627\u0645 \u0627\u0644\u0633\u0631\u064a\u0627\u0646 \u0627\u0644\u0639\u0643\u0633\u064a.<\/li>\n<li>\ufe97\ufea4\ufed8\ufed6 \ufee3\ufee6 \u0648\ufe9f\ufeee\u062f \u0645\u0633\u0627\u0641\u0629 \u0641\u0627\u0635\u0644\u0629 \ufe91\ufef4\ufee6 \u0627\u0644\u0637\u0631\u0641 \u0627\u0644\u0633\u0641\u0644\u064a \u0644\u0644\u0645\u0646\u0642\u0627\u0631 \u0648\u0633\u0637\u062d \u0627\ufef7\u0631\u0636 \u0648\u062a\u0623\u0643\u062f \u0645\u0646 \u0639\u062f\u0645 \u0648\u062c\u0648\u062f \u0623\u064a \ufea3\ufec4\ufe8e\u0645 \u062d\u0648\u0644 \u0627\u0644\u0635\u0645\u0627\u0645.<\/li>\n<\/ul>\n<p style=\"text-align: justify;\">.<\/p>\n<p style=\"text-align: justify;\">\u0625\u0630\u0627 \u062d\u062f\u062b \u062a\u0631\u0627\u0643\u0645 \u0644\u0644\u0623\u0648\u0633\u0627\u062e \u062f\u0627\u062e\u0644 \u0627\u0644\u0635\u0645\u0627\u0645 \u060c \u0641\u0633\u064a\u0639\u0645\u0644 \u0636\u063a\u0637 \u0627\u0644\u062e\u0637 \u0648\u0627\u0644\u0633\u0631\u064a\u0627\u0646 \u0627\u0644\u062c\u0627\u0631\u064a \u0639\u0644\u064a \u0625\u0632\u0627\u062d\u062a\u0647 \u0644\u0644\u062e\u0627\u0631\u062c.\u0648 \u0641\u064a \u0628\u0639\u0636 \u0627\u0644\u062d\u0627\u0644\u0627\u062a \u060c \u0642\u062f \u064a\u062a\u0645 \u0625\u062f\u062e\u0627\u0644 \u0644\u0648\u062d \u062e\u0634\u0628\u064a \u0628\u0645\u0642\u0627\u0633 \u0628\u0648\u0635\u0629 x 4 \u0628\u0648\u0635\u0629 \u0623\u0648 1.5 \u0628\u0648\u0635\u0629 x 12 \u0628\u0648\u0635\u0629 \u0628\u0634\u0643\u0644 \u0645\u0624\u0642\u062a \u0641\u064a \u0641\u0648\u0647\u0629 \u0627\u0644\u0635\u0645\u0627\u0645 (\u0627\u0644\u0645\u0646\u0642\u0627\u0631 <span style=\"color: #0000ff;\">Bill)<\/span> \u0648\u064a\u062a\u0645 \u062a\u062f\u0648\u064a\u0631 \u0627\u0644\u0644\u0648\u062d \u0627\u0644\u062e\u0634\u0628\u064a \u0628\u0632\u0627\u0648\u064a\u0629 90 \u062f\u0631\u062c\u0629. \u0633\u064a\u0624\u062f\u064a \u0647\u0630\u0627 \u0625\u0644\u0649 \u062a\u064a\u0633\u064a\u0631 \u0625\u0632\u0627\u062d\u0629 \u0623\u064a\u0629 \u0623\u0648\u0633\u0627\u062e \u0639\u0627\u0644\u0642\u064b\u0627 \u0641\u064a \u0641\u0648\u0647\u0629 \u0627\u0644\u0635\u0645\u0627\u0645 (\u0627\u0644\u0645\u0646\u0642\u0627\u0631 <span style=\"color: #0000ff;\">Bill).<\/span><\/p>\n<p><img loading=\"lazy\" class=\"aligncenter wp-image-2748 size-full\" src=\"http:\/\/www.inst-sim.com\/1\/wp-content\/uploads\/2018\/10\/Duckbill-Maint.jpg\" alt=\"\" width=\"848\" height=\"576\" srcset=\"https:\/\/www.inst-sim.com\/1\/wp-content\/uploads\/2018\/10\/Duckbill-Maint.jpg 848w, https:\/\/www.inst-sim.com\/1\/wp-content\/uploads\/2018\/10\/Duckbill-Maint-300x204.jpg 300w, https:\/\/www.inst-sim.com\/1\/wp-content\/uploads\/2018\/10\/Duckbill-Maint-768x522.jpg 768w\" sizes=\"(max-width: 848px) 100vw, 848px\" \/><\/p>\n<p><strong>*<\/strong><\/p>\n<p style=\"text-align: center;\"><span style=\"color: #ff0000;\">\u0627\u0636\u063a\u0637 \u0647\u0646\u0627 \u0644\u062a\u062a\u0627\u0628\u0639 \u0635\u0641\u062d\u062a\u0646\u0627 \u0639\u0644\u064a \u0627\u0644\u0641\u064a\u0633 \u0628\u0648\u0643<a style=\"color: #ff0000;\" href=\"https:\/\/www.facebook.com\/Instruments-Simulation-987927711244444\/\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" class=\"alignnone size-full wp-image-2022\" src=\"http:\/\/www.inst-sim.com\/1\/wp-content\/uploads\/2018\/04\/Inst-Sim-Face-ani-small2.gif\" alt=\"\" width=\"270\" height=\"72\" \/><\/a><\/span><\/p>\n<p style=\"text-align: center;\"><span style=\"color: #ff0000;\"><strong>***************************************************************<\/strong><\/span><\/p>\n<p><img loading=\"lazy\" class=\"alignnone size-full wp-image-559\" src=\"http:\/\/www.inst-sim.com\/1\/wp-content\/uploads\/2016\/11\/handwave-Yellow.gif\" alt=\"handwave-yellow\" width=\"125\" height=\"70\" \/><\/p>\n<h3><span style=\"color: #ff6600;\"><strong>\u0645\u0648\u0627\u0636\u064a\u0639 \u0630\u0627\u062a \u0635\u0644\u0629<\/strong><\/span><\/h3>\n<h3>\u00a0.<\/h3>\n<ul>\n<li>\n<h3><a href=\"http:\/\/www.inst-sim.com\/1\/valves\/stop-check-valve\/\">\u0635\u0645\u0627\u0645 \u0627\u0644\u0625\u064a\u0642\u0627\u0641 \u0648\u0639\u062f\u0645 \u0627\u0644\u0631\u062c\u0648\u0639 Stop Check Valve<\/a><\/h3>\n<\/li>\n<li>\n<h3><a href=\"http:\/\/www.inst-sim.com\/1\/valves\/check-valve-3\/\">\u0635\u0645\u0627\u0645 \u0627\u0644\u0625\u062a\u062c\u0627\u0647 \u0627\u0644\u0648\u0627\u062d\u062f \u0630\u0648 \u0627\u0644\u0642\u0631\u0635 Disc Check Valve<\/a><\/h3>\n<\/li>\n<li>\n<h3><a href=\"http:\/\/www.inst-sim.com\/1\/valves\/check-valve\/\">\u0635\u0645\u0627\u0645 \u0639\u062f\u0645 \u0627\u0644\u0631\u062c\u0648\u0639 Check Valve \u2013 \u062c1<\/a><\/h3>\n<\/li>\n<\/ul>\n<p>.<img loading=\"lazy\" class=\"size-full wp-image-559 alignleft\" src=\"http:\/\/www.inst-sim.com\/1\/wp-content\/uploads\/2016\/11\/handwave-Yellow.gif\" alt=\"handwave-yellow\" width=\"125\" height=\"70\" \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u0635\u0645\u0627\u0645 \u0645\u0646\u0642\u0627\u0631 \u0627\u0644\u0628\u0637\u0629 Duckbill Flexible Rubber Check Valve * The flexible sleeve provides maximum flow with a minimum pressure drop across the valve at all times. The &#8220;duckbill&#8221; concept check valve has been in use for over 100 years in waterworks and commonly accepted for use in industrial process piping systems and in waste and [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":2742,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[11],"tags":[35,138],"_links":{"self":[{"href":"https:\/\/www.inst-sim.com\/1\/wp-json\/wp\/v2\/posts\/2735"}],"collection":[{"href":"https:\/\/www.inst-sim.com\/1\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.inst-sim.com\/1\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.inst-sim.com\/1\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.inst-sim.com\/1\/wp-json\/wp\/v2\/comments?post=2735"}],"version-history":[{"count":5,"href":"https:\/\/www.inst-sim.com\/1\/wp-json\/wp\/v2\/posts\/2735\/revisions"}],"predecessor-version":[{"id":2749,"href":"https:\/\/www.inst-sim.com\/1\/wp-json\/wp\/v2\/posts\/2735\/revisions\/2749"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.inst-sim.com\/1\/wp-json\/wp\/v2\/media\/2742"}],"wp:attachment":[{"href":"https:\/\/www.inst-sim.com\/1\/wp-json\/wp\/v2\/media?parent=2735"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.inst-sim.com\/1\/wp-json\/wp\/v2\/categories?post=2735"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.inst-sim.com\/1\/wp-json\/wp\/v2\/tags?post=2735"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}