H44W-16P旋启式止回阀H44W-16P

H41W-16P不锈钢升降式止回阀H41W-16P

H44HJIS日标止回阀H44H

HQ45XHQ45X微阻球形止回阀

HQ44XHQ44X无磨损球形止回阀

HQ41XHQ41X滚球式球形止回阀

HH49XHH49X微阻缓闭消声止回阀

HH44XHH44X微阻缓闭止回阀

HC44XHC44X橡胶瓣止回阀

HC42XHC42X*止回阀

H77HH77H对夹单瓣蝶型止回阀

H76XH76X型对夹式止回阀