升降式止回阀使用一个可承受弹簧载荷的轻量阀瓣，阀瓣的升程不高。

Lift check valve with a spring load can withstand light valve flap, flap valve lift is not high.

youdao

升降式止回阀使用一个可承受弹簧载荷的轻量阀瓣，阀瓣的升程不高。

Lift check valve with a spring load can withstand light valve flap, flap valve lift is not high.

youdao