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.

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，API59  Flange: ASME 16.5 API605 ASME B 16.47

Product certification：ISO9001：2000   API 6D  CE