Cast Steel Pn16 with Lever and Counter Weight Check Valve

Construction is as  follows Name Swing Type Check ValveSize 1/2"~24"; DN15~DN600Normal pressure Class 150/300/600/900/1500/2500; PN16/PN25/PN40/PN64/PN100/PN160/PN250Design standardBS1868,API 6D,ASME B16.34; DIN3356, EN10739MarkedMSS SP-25End flangeANSI B 16.5,ASME B16.47; EN1092,DIN2543~DIN2547,AS2129Face to FaceANSI B 16.10,API 6D; DIN3202,EN558-1,EN12982,ISO 5752Test standardAPI598,API 6D; DIN3230, EN12266,ISO 5208Suitable temperature -29~425°CMedium Fresh water, sewage, sea water, air, vapor, food, medicine, oils, alkalis, salt etc.Acidic environmentNACE MR0175Structure- Regular Port- Bolted Bonnet / Pressure Sealed Bonnet / Welded Bonnet -P.T Ratings to ASME B16.34- Renewable Seat- Threaded or welded seat ring- Design:BS1868, API 6D,DIN3356, EN10739,JIS,ANSI,GB- Butt Weld Ends to ASME B16.25; DIN 3239,EN12627- Flanged Ends to ASME B16.5;DIN2543~DIN2547;EN1092- Cast or Forged Carbon Steel, Stainless Steel, Duplex SteelMain Part & MaterialsPart NamesPart MaterialsBodyWCBLCBWC6CF8CF8MCF3CF3MCE8MN/CD4McNCoverWCBLCBWC6CF8CF8MCF3CF3MCE8MN/CD4McNDiscWCBLCBWC6CF8CF8MCF3CF3MCE8MN/CD4McNArmWCBLCBWC6CF8CF8MCF3CF3MCE8MN/CD4McNArm PinA182 6aA182 304A182 304A182 304A182 316A182 304LA182 316LA182 F53/F51Seat/Seat Ring13%CrSS30413%CrSS304SS316SS304LSS316LA182 F53/F51Cover gasketSS304+Graphite/SS304+GraphiteBolts/NutsB7/2HL7/4B16/4B8/8B8M/8MB8/8B8M/8MB8M/8MSuitable MediumW.O.G etc.HNO3, CH3OOH etc.Urea etc.Suitable Temperature-29~425 °C-46~340 °C-29~538 °C-196~427 °C-196~427 °C-196~427 °C-196~427 °C-29~315 °CProduct displayCompany  Introduction  /* March 10, 2023 17:59:20 */!function(){function s(e,r){var a,o={};try{e&&e.split(",").forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1