Coosai check valves is used in class 150～class 2500, NPS ½～NPS 48, working temperature -196℃～540℃ many kinds of pipelines, which can prevent the refluence of medium. And can be applicable to water, steam, oil and so on. Via choosing different types of materials. Main materials: WCB, low temperature steel, dual phase steel(F51F5), Titanium alloy, Aluminum bronze, INCONEL, SS304, 304L, 316, 316L, chrome-molybdenum steel, Monel (400/500), 20#alloy, Hayne’s alloy etc. design standard：API594，API6D，BS1868 Face to face: API594，API6D，ASME 16.10 . Grade of pressure-temperature: ASNI 16.34 Test &inspection: API6D，API598 Flange: ASME 16.5， API605， ASME B 16.47
Purpose, standard and specificationCoosai DIN check valves is used in PN16～PN40, DN15～DN400, working temperature -196℃～540℃ many kinds of pipelines, which can prevent the refluence of medium. And can be applicable to water, steam, oil and so on. Via choosing different types of materials. Main materials: WCB, low temperature steel, dual phase steel(F51F5), Titanium alloy, Aluminum bronze, INCONEL, SS304, 304L, 316, 316L, chrome-molybdenum steel, Monel (400/500), 20#alloy, Hayne’s alloy etc. Face to face: DIN 3202 F1，Test &inspection: DIN 3239 Flange: DIN 2543，2544，2545。
