止回阀

Modular check construction featuring nonreversible checks with captured springs for simplified servicing.

模块化止回结构特点可逆止回，配置简化维修的复位弹簧。

A strainer is recommended to be installed ahead of the backflow preventer to prevent the fouling of the check assembly and resulting spillage from the valve during repressurization.

建议防回流前安装一个过滤器，防止止回总成受到污染而导致这种门再增压期间产生泄漏或溢出。