H42X底阀

H41Y、H44H法兰端自密封止回阀

H11Y、H14Y、H61Y、H64Y丝口锻钢止回阀 焊接式锻钢止回阀

H41Y、H44Y锻钢法兰端止回阀

JLH多功能三合一止回阀

H44N天燃气旋启式止回阀

H42N天燃气立式止回阀

H41N升降式燃气止回阀

HQ44、HQ45滑道滚球式止回阀

HH46X、HDH48X、HH49X微阻缓闭消声止回阀

HH46X微阻缓闭蝶式止回阀

HX44X橡胶瓣止回阀