Straight-through ammonia check valve is strictly designed and manufactured according to the ammonia valve standard. The valve flap is positioned along the center for lifting movement. The sealing surface is made of Babbitt alloy or tetrafluoroethylene. It has a small coefficient of friction, good wear resistance, and flexible and reliable operation. , Excellent sealing performance. Ammonia check valve is suitable for ammonia gas or liquid ammonia pipeline, and prevents the medium from flowing back. Check valve for straight-through ammonia ..