升降式止回阀

升降式止回阀

1

内螺纹升降式止回阀

Inside screw lift check valve
2

升降式止回阀一般采用直通或球形阀体结构。

Lift check valves come in in-line or globe-style body patterns .
3

这种阀流通性能比升降式止回阀要好，通常采用平板阀体，这样成本更低，安装也更加容易。

These valves have better flow than lift checks and most often use a wafer body for low cost and easy installation .
4

由于这种止回阀能够在重力和介质倒流撞击启闭件之前关闭阀门，因此这种直通弹簧驱动升降式止回阀也称为“静音”止回阀。

The in-line spring-actuated lift check also is referred to as the " silent check " because the spring closes the valve before gravity and fluid reversal can slam the valve closed .
5

升降式缓闭止回阀设计

Design of lift type slow closure check valve