The flat gate valve is a sliding valve whose closing member is a parallel gate. The closing part can be a single gate or a double gate with a spreading mechanism in between.
The pressing force of the gate to the valve seat is controlled by the medium pressure acting on the floating gate or the floating valve seat. If it is a double gate flat gate valve, the expansion mechanism of the two gates can supplement this pressing force.
1. Features of flat gate valve
1. The valve seat adopts an O-ring seal and a floating seat structure that applies pre-tightening force to seal the inlet and outlet of the flat gate valve in both directions; and the opening and closing torque of this structure is only 1/2 of that of ordinary valves, which can achieve easy opening and closing. Close the valve;
2. When fully opened, the channel is smooth and straight, the flow resistance coefficient is very small, and there is no pressure loss, and the pipeline can be cleaned with a hair ball;
3. The packing structure with self-sealing capability is adopted, without frequent adjustment, the opening and closing are extremely light, and the sealing performance is reliable. There is an auxiliary sealing grease injection structure at the stuffing box, and the sealing performance is absolutely reliable, and it truly achieves zero leakage; it solves the general purpose The most prone to leakage at the valve packing;
4. When the flat gate valve is closed, the high pressure in the inner cavity can be automatically removed to ensure safe use;
5. Fully enclosed structure, good protection performance, can adapt to all-weather requirements.
2. Applicable occasions of flat gate valve
1. (Class150~900/PN1.0~16.0MPa, working temperature -29~121℃) oil and natural gas transmission pipeline. The flat gate valve with diversion hole is also easy to clean the pipeline.
2. The transportation pipeline and storage equipment of refined oil.
3. Oil and natural gas extraction wellhead devices, that is, valves for Christmas trees.
4. Pipes with medium with suspended particles.
5. City gas transmission pipeline.
6. Tap water works.
Nortech is one of the leading industrial valve manufacturers in China with quality certification ISO9001.
Major products: Butterfly Valve, Ball Valve,Gate Valve, Check Valve, Globe Vavlve,Y-Strainers, Electric Acurator , Pneumatic Acurators .
Post time: Aug-13-2021