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标题:Check Valve Series
正文:
Check Valve SeriesA check valve allows fluid to flow through it in only one direction. Check valves are two-port valves, meaning they have two openings in the body, one for fluid to enter and the other for fluid to leave. There are various types of check valves used in a wide variety of applications. Although they are available in a wide range of sizes and costs, check valves generally are very small, simple, and/or cheap. Check valves work automatically and most are not controlled by a person or any external control; accordingly, most do not have any valve handle or stem. WENZHOU WINDMILL VALVE CO.,LTD. http://www.dfcvalve.com .Check Valve Series Design FeaturesSeatFor cast steel check valve, the seat material is usually forged steel. The sealing surface of the seat is spray welded with hard alloy specified by the customer. Renewable threaded seat is used for NPS≤10 check valves, and welded-on seat is optional. Welded-on seat is used for NPS≥12 carbon steel gate valves. For stai
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