法兰低温止回阀，DH44Y法兰低温止回阀

H44H旋启式止回阀

XH81/XH81A/XH41/XH41A橡胶排污止回阀

HQ44X/HQ45X微阻球形止回阀

HH46X HH48X HH49X微阻缓闭蝶式止回阀

内螺纹与承插焊锻钢止回阀

H44H美标旋启式止回阀

H42F46立式衬氟升降止回阀

BH41W夹套保温止回阀

H72HH72H高压对夹式止回阀

H42W法兰立式止回阀

H41Y法兰锻钢止回阀