And a by-pass pipe with check valve is set between the inlet and outlet of circulating pump.

在循环泵进出口之间设置带止回阀的旁通管。

youdao

And a by-pass pipe with check valve is set between the inlet and outlet of circulating pump.

在循环泵进出口之间设置带止回阀的旁通管。

youdao