H41T升降式铸铁止回阀

J11W升降式内螺纹截止阀

H11W升降式丝扣止回阀

H41H铸钢升降式止回阀

H71H升降式对夹止回阀

H71XT南瓜式止回阀

BH41H夹套保温止回阀

H41F46衬氟升降式止回阀

HH49J全衬胶消声缓闭止回阀

PX44H斜盘式止回阀

H41H2520耐高温止回阀

升降式止回阀；锻钢阀