供应锻钢承插焊止回阀-全通径&缩径

基本数据

详细介绍

我们工厂可以根据客人需要，生产 碳钢、不锈钢、合金钢等材质的闸阀、截止阀、止回阀、过滤器等。

由于我们几乎都是出口的产品，所以一般都采用胶合板木箱包装，也有采用熏蒸木箱装箱，如果国内使用，也可用一般木箱包装。当然一切满足客户需要。

质保期：从出厂日起算，18个月；从投入使用日起算，12个月。如果是阀门本身的质量问题，我们负责免费修理或者退换。但是由于人为原因或者客人下单时没有说明使用介质而引起的质量问题，我们可以提供修理帮助，但是所属费用得客人自己出。希望 彼此谅解 和 合作愉快！

check valve series(止回阀概述)

a 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.

design features

seat

for carbon 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 stainless steel check valve, integral seat is usually applied, or to weld hard alloy directly integrally. threaded-in or welded-on seat is also optional for stainless steel check valve if required.

body-bonnet gasket

stainless steel + flexible graphite wounded gasket is used for class150 and class 300 check valve; stainless steel flexible graphite wounded gasket is used for class 600 check valve, ring type joint gasket is used for class 900 check valve; pressure seal design is used for class1500??class 2500 check valves.

body-bonnet connection

the body and bonnet of class150 to class 900 check valves are usually with studs and nuts. and the body and bonnet of class 1500 to class 2500 check valves are usually of pressure seal design