微阻缓闭式止回阀HH44X

铸钢升降式止回阀H41H

铸铁升降式止回阀H41T

不锈钢升降式止回阀H41W

不锈钢内螺纹止回阀H14W

美标止回阀H44H/Y/W

美标旋启式止回阀H44W

铸钢旋启式止回阀H44H

铸铁旋启式止回阀H44T

不锈钢旋启式止回阀H44W

对夹园片式止回阀H74H

对夹式止回阀H71H