对夹单瓣式由阀体、阀瓣、弹簧等组成,对夹单瓣式止回阀水平或垂直安装于管路系统,防止介质倒流,具有结构短、体积小、质量轻;阀
H76型凸耳对夹双瓣旋启式止回阀(美标)H76 type lug and wafer type double discs swing check valve(ANSI standard)
H71对夹升降式止回阀(国标)H71 wafer type lift check valve(GB standard)