H41W铜美标升降式止回阀

H44W铜美标旋启式止回阀

H44W船用青铜止回阀

J45W黄铜截止阀

J41W青铜美标截止阀

J41W青铜船用截止阀

J44W铜角式截止阀

J41W铜截止阀

J41T磅级美标镍铝青铜截止阀

J44W青铜角式截止阀

Q347F铜涡轮固定球阀

Q41F美标镍铝青铜球阀