The electric flow and pressure regulating valve is of piston structure, the regulating mechanism of piston type control valve shall be crank slider mechanism, and the sliding block of closing part shall be cylindrical or conical piston. The inner cylinder of the valve body can move axially along the center of the pipeline under the guide of the guide rail, thus changing the area of the flow passage to realize the function of regulating the flow rate and reducing the pressure. The connection form with the pipeline is flange connection, and the flange connection size and structure length meet the requirements of corresponding GB.

  Piston control valve is mainly composed of valve body, valve seat, piston, valve shaft, crank, connecting rod, driving pin, taper pin, bearing and operating mechanism. The piston control valve transforms the rotation of the valve shaft into the axial movement of the piston along the guide rail through the crank connecting rod mechanism. In the process of the piston moving forward and backward, the flow regulation and pressure control are realized by changing the flow area between the piston and the valve seat.
The water flows into the valve body from the axial arc, and the flow passage in the piston control valve is axisymmetric, and the fluid will not produce turbulence when it flows through. No matter where the piston moves to any position, the water flow section in the valve chamber is annular at any position, and it shrinks to the axis at the outlet, so as to prevent cavitation from damaging the valve body and pipeline caused by throttling.

1. The advantage of this valve is that its structure design and material selection make it not afraid of sewage blocking slide, scaling and blocking. The driving device is obviously reduced.
2. The valve can automatically adjust the preset pipeline medium parameter value to keep it constant within a certain precision, and the precision range can also be adjusted.
3. The valve has good cavitation resistance. The rib plate on the inner wall of the valve body also acts as a rectifying plate, which can disperse water flow and prevent cavitation. At the same time, it also reduces the valve noise and piston vibration.
4. The control system of the valve can adopt integrated electronic circuit, which has the advantages of small volume, good reliability, high sensitivity and convenient installation and debugging.
5. It can be used as a stop valve. It is not necessary to set other stop valves.
6. If the control degree and precision requirements are not very high, the valve can be controlled by manual or ordinary electric form.
7. It can be installed horizontally or vertically.