H44W进口不锈钢旋启式止回阀H44W

API进口旋启式美标止回阀API

DY30AX进口多功能缓开缓闭止回阀DY30AX

DY30BX进口多功能缓开快闭止回阀DY30BX

DYH41X进口多功能Y型快闭止回阀DYH41X

H76W进口对夹双瓣旋启式止回阀H76W

H74W进口对夹单瓣旋启式止回阀H74W

H71W进口升降式对夹止回阀H71W

H41T进口铸铁升降式法兰止回阀H41T

H41H进口铸钢升降式法兰止回阀H41H

H41W进口不锈钢升降式法兰止回阀H41W

H12W进口立式丝扣止回阀H12W