止回阀h41x立式止回阀升降式止回阀球墨铸铁消声止回阀hc41x

止回阀h41x立式止回阀升降式止回阀球墨铸铁消声止回阀hc41x

止回阀执行标准:严格按gb12235标准设计制造,阀瓣沿着中心定位作升降

h42w-16p立式止回阀

h42h16p不锈钢法兰立式止回阀dn100