H46W-16C DN200H46型法兰连接对夹式旋启式止回阀
面议H46W-16C DN200H46型法兰连接对夹式旋启式止回阀
面议H77X-16C DN50H77X双瓣蝶式旋启式软密封对夹式止回阀
面议H71W-150LBP 1/2“美标H71对夹式单瓣升降式止回阀
面议H71H-16C DN50H71对夹式止回阀,小口径铸钢对夹止回阀,升降式对夹式止回阀
面议H71H-16C DN125H71型硅溶胶铸造对夹式止回阀,升降式对夹止回阀,大口径对夹止回阀
面议H71W-16P DN15H71不锈钢对夹式止回阀单瓣升降式
面议H74W-16PH74型对夹式止回阀,单瓣旋启式
面议H76W-150LB 2“美标H76双瓣蝶式对夹式止回阀
面议H76W-16P DN50双瓣旋启式对夹式止回阀
面议H71对夹式高压升降式不锈钢止回阀
面议