The working principle of the piston type regulating valve reduces the inlet pressure to a certain required outlet pressure through the throttling of the opening and closing member, and keeps the outlet pressure stable. When the piston type regulating valve is shipped from the factory, the piston is in an uncompressed state. At this time, the main valve flap and the valve flap are closed. When using, turn the adjusting screw clockwise to compress and adjust the piston to move the diaphragm to open the valve flap. From the hole a through the valve seat to the b hole into the piston, under the action of the medium pressure, the piston moves downward to push the main valve disc away from the main valve seat, so that the medium flows to the valve. At the same time, the hole from the c enters the diaphragm. When the pressure behind the valve exceeds the set pressure, the diaphragm is pushed up to compress the adjustment spring, and the valve flap is moved in the closing direction, so that the medium flowing into the piston is reduced, and the pressure is also When the main valve flap is pushed up and down by the main valve spring force, the gap between the main valve flap and the main valve seat is reduced, the medium flow rate is also reduced, and the pressure behind the valve is also reduced. The new balance, on the other hand, when the post-valve pressure is lower than the set pressure, the gap between the main disc and the main valve seat increases, and the medium flow rate also increases, so that the post-valve pressure also increases to reach a new balance.
The piston type regulating valve should be installed horizontally in the pipeline. It is an essential accessory of the pneumatic regulating valve. The main function is to decompress and stabilize the pressure of the gas and fluid to a fixed value, so that the regulating valve can obtain a stable air source. Power is used to adjust the controls.
The operation of the piston regulator is controlled by the post-valve pressure. When the pressure sensor detects that the valve pressure indication is rising, the valve opening degree of the regulating pressure regulating valve is decreased; when the pressure is detected after the valve is detected, the valve opening degree of the regulating pressure regulating valve is increased to meet the control requirement.
Valve body
The valve body includes a front valve body and a rear valve body, and an axially symmetrical flow passage is disposed in the rear valve body.
Indirect deflector
The deflector is a key component of the multi-function piston valve. There are many waist grooves on the wall. All the waist grooves are arranged according to the working conditions and the medium.
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