The water pressure reducing valve has its own unique characteristics, and there are many kinds of it, which is welcomed by everyone. Today, Kaiyide Valve Manufacturing Co., Ltd. introduces the relevant knowledge about water pressure reducing valve and introduces the classified water conservancy of water conserving pressure reducing valve. The pressure reducing valve has its own unique characteristics, and there are many types, which are welcomed by everyone. Today, Botou Valve Manufacturing Co., Ltd. introduces the relevant knowledge about water pressure reducing valve and introduces the classification of water pressure reducing valve.
There are many types of pressure reducing valves, but they can be roughly divided into two types: direct acting (self-powered) and indirect acting (it-force). The direct acting pressure reducing valve uses the energy of the medium itself to control the required pressure. The indirect acting pressure reducing valve uses external power such as air pressure, hydraulic pressure or electric to control the required pressure. Compared with the two types, the former has a relatively simple structure and the latter has higher precision. At present, direct-acting pressure reducing valves are produced and used in large quantities in China. According to the structure of the pressure reducing valve, it can be divided into:
Piston pressure reducing valve: It balances the pressure through the piston and drives the valve flap to move.
Membrane pressure reducing valve: a pressure reducing valve that uses a film as a sensitive component to drive the flap motion.
Air bag type pressure reducing valve: A pressure reducing valve that balances the pressure by the pressure of the medium entering the air bag after the valve.
The above classification method is based on the structure of the pressure reducing valve. If divided according to the valve seat form of the pressure reducing valve, it can be divided into two types: single seat type pressure reducing valve and double seat type pressure reducing valve. On the one hand, the double seat type pressure reducing valve can make the forces acting on the upper and lower valve seats balance with each other to offset, and reduce the combined force acting on the valve stem; on the other hand, a larger passage area can be obtained. At the same time, it can reduce the volume of the entire valve. However, the valve seat of the double seat seat pressure reducing valve is not good in processability, and the processing and grinding of the double valve seat is difficult; the assembly dimension chain should be well controlled to ensure the assembly precision and make the pressure reducing valve normal and stable during operation.
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