PH（4/6）4美标旋启式焊接止回阀

H71H对夹升降式止回阀

H74H对夹圆片止回阀

H42H/W/N立式止回阀

H44H旋启式止回阀

HC81X沟槽消声止回阀

HQ44X滑球无磨损止回阀

HQ41X无磨损球型止回阀

DHH44HX微阻缓闭消声止回阀

HH48/49X/46X微阻缓闭消声止回阀

HQ41X滑道滚球式法兰止回阀

HH44X微阻缓闭消声止回阀