H42H不锈钢立式止回阀

H44F46衬氟旋启式止回阀

H44H旋启式止回阀

HQ44X - HQ45X微阻球形止回阀

H41F46衬氟升降式止回阀

H41H升降式止回阀

HH44X微阻缓闭止回阀

H41H - H41W美标止回阀

HH46X - HH48X - HH49X微阻缓闭蝶型消声止回阀

H41 - HC41(B型) - H41-16T全铜消声止回阀

H71H不锈钢对夹式止回阀

H72Y对夹式高压止回阀