h76h对夹止回阀,H76对夹式止回阀

h76h 对夹蝶式止回阀
碳钢双瓣对夹式止回阀h76h16c
h76h对夹双瓣蝶式止回阀
h76h对夹双瓣旋启式止回阀由阀体,阀瓣,阀杆及弹簧等零件组成,采用
高品质质量h76h对夹蝶式止回阀对夹式止回阀规格齐全货源充足