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DIN3352 F4 resilient seated gate valve tells what are the related principles of pressure reducing valve?

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DIN3352 F4 resilient seated gate valve tells what are the related principles of pressure reducing valve?

Author:
Source:
Time
2021/04/13
The pressure reducing valve is a valve that reduces the inlet pressure to a certain required outlet pressure through adjustment, and relies on the energy of the medium itself to automatically maintain a stable outlet pressure.

The pressure reducing valve is a valve that reduces the inlet pressure to a certain required outlet pressure through adjustment, and relies on the energy of the medium itself to automatically maintain a stable outlet pressure. From the point of view of fluid mechanics, a pressure reducing valve is a throttling element whose local resistance can be changed. That is, by changing the throttling area, the flow rate and the kinetic energy of the fluid are changed, resulting in different pressure losses, so as to achieve the purpose of reducing pressure. Then rely on the adjustment of the control and regulation system to balance the fluctuation of the pressure behind the valve with the spring force, so that the pressure behind the valve remains constant within a certain error range. So do you know what it is related to? Let’s take a look at it with the editor of DIN3352 F4 resilient seated gate valve!
Principle of action: The pressure reducing valve reduces the water pressure by the local resistance of the flow channel in the valve to the water flow. The range of the water pressure drop is automatically adjusted by the membrane connected to the valve flap or the water pressure difference between the inlet and outlet on both sides of the piston. The principle of constant ratio pressure reduction is to use the water pressure ratio of the floating piston in the valve body to control. The pressure reduction ratio at the inlet and outlet ends is inversely proportional to the piston area ratio at the inlet and outlet sides. This kind of pressure reducing valve works smoothly and without vibration; there is no spring in the valve body, so there is no concern about spring corrosion and metal fatigue failure; the sealing performance is good and does not leak, so it reduces both dynamic pressure (when water flows) and static pressure (flow rate is 0 o'clock); especially when decompression does not affect the water flow.
Working principle: pressure reducing valve adjusts the flow of the medium by controlling the opening of the opening and closing parts in the valve body, reducing the pressure of the medium, and at the same time adjusting the opening of the opening and closing parts with the help of the pressure behind the valve, so that the pressure behind the valve is maintained Within a certain range, and spray cooling water into the valve body or behind the valve to reduce the temperature of the medium. This kind of valve is called a pressure reducing valve. The automatic selection of pressure reducing valve is included. The characteristic of this valve is to keep the outlet pressure and temperature within a certain range when the inlet pressure is constantly changing.
The above is the editor of DIN3352 F4 resilient seated gate valve telling the relevant principles and knowledge of pressure reducing valve. I hope you can learn more.