H46H、H46W法兰对夹蝶式止回阀

H44T铸铁法兰止回阀

H44H美标法兰止回阀

H42H、H42W法兰立式止回阀

H41H德标法兰止回阀

H42Y法兰式高压止回阀

H72H、H72Y对夹式高压止回阀

H71H、H71W对夹升降式止回阀

HC41X法兰消声止回阀

H44W法兰不锈钢止回阀

H76H、H76W对夹双瓣旋启式止回阀

H74H/W/X对夹旋启式止回阀