3. Stainless steel globe valve, als兒自o called cut gate, i吧風s also a kind of valve that is新匠 widely used in the chemic技女al industry. The reason why it is去但 widely used is that the friction betw著很een the sealing surfa門老ces is small during the opening an來廠d closing process, it is more durable,海店 and the opening height is 林熱not large. Easy to manufacture 喝工and easy to maintain, it 空不is not only suitable for m答謝edium and low pressure, but also suita舊通ble for high pressure. Its closin視商g principle is that r東生elying on the pressure of the 分場valve stem, the sealing微如 surface of the valve disc and th作習e sealing surface of 音物the valve seat are tightly fitted to p煙開revent the flow of the m哥城edium. The globe valve can only a如分llow the medium to move in one directi劇業on, and the device has directi信地onality. Its structural le章我ngth is longer than that of the店到 gate valve, and at the same 房喝time, the fluid resistance is上呢 large, and the sealing rel理藍iability is not strong during long文個-term operation. Globe valves are divid報腦ed into three categories: straigh錢亮t-through, right-angle and st上女raight-through oblique globe va樂新lves.

4. The stainless steel check val遠門ve is a valve that automati城北cally opens and closes by rel微術ying on the strength of the f數地luid itself. Its function is to pre如農vent the backflow of the 對線medium. It has many titl什市es, such as check valve, one-wa校森y valve, one-way valve, etc. Acco靜機rding to the structure呢票 can be divided into two categories.

1) Stainless steel swing亮姐 check valve: The valve disc rotate上東s around the pin outsid匠光e the seat. This type of valve is d門可ivided into single-lobe, doubl要購e-lobe and multi-lobe, but the p煙暗rinciple is the same.看視 The water suction bottom v分拍alve is a deformatio道銀n of the check valve. Its structur討鐵e is the same as that of th個到e above two types of check val雨說ves, except that its l舊章ower end is open so that wat靜路er can enter.