H41HH41H铸钢止回阀/升降式止回阀/单向阀

H61YH61Y高压焊接止回阀/升降式止回阀

H72HH72H对夹升降式止回阀

H42HH42H立式止回阀/单向阀

HC41XHC41X消声止回阀/消声逆止阀

HQ45XHQ45X球形止回阀/微阻止回阀

H42F46H42F46衬氟止回阀/防腐止回阀

H44F46H44F46衬氟止回阀/旋启式止回阀

H41HH41H锻钢止回阀/法兰升降式止回阀

H61HH61H锻钢止回阀/焊接止回阀

H64HH64H焊接止回阀/高温高压止回阀

H77HH77H对夹蝶型止回阀