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.
翻转式阀瓣止回阀由圆柱形外壳及转动圆盘阀瓣构成。
Tilting disc Check Valves consist of a cylindrical housing, with a pivoted circular disc.
尼伯科旋启式止回阀可配置外部操纵杆和压铁。操纵杆和压铁用于对阀瓣进行外部控制。
NIBCO swing check valves are available with an outside lever and weight. The lever and weight arrangement is used to maintain exterior control over disc movement.
旋转式止回阀也可以安装在垂直位置，此时阀瓣应该无法达到阀门的位置。
The swing check valve can also be mounted to the vertical position, provided the disc should not reach the valve position.
旋转式止回阀也可以安装在垂直位置，此时阀瓣应该无法达到阀门的位置。
The swing check valve can also be mounted to the vertical position, provided the disc should not reach the valve position.
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