H42X水下式水泵底阀

HH44X微阻缓闭式止回阀

HC44X卧式安装橡胶瓣止回阀

HH47X蝶式缓冲止回阀

HQ41X滑道滚球式止回阀

H72H高压对夹式止回阀

H11H锻钢自动止回阀

H44H美标旋启式法兰止回阀

H71H对夹升降式止回阀

H41H铸铁升降式止回阀

HC41X防水锤消声止回阀

H42H/W不锈钢立式止回阀