Checkmodules are threaded into the valve adapter for leak proof operation.
止回阀模块通过螺纹旋进阀门适配器内,提供无泄漏运行。
2
Checkmodules are installed in the valve body with the seats facing the valve inlet.
安装在阀门内的止回模块其阀座应该面对阀门进口。
3
Note: the seats and springs of the first and second checkmodules are not interchangeable. The heavier spring and smaller diameter seat belong with the first check module.