Main Applications

It is mainly used to perform linear flow regulation or stable pressure reduction in the system without vibration, cavitation noise, cavitation and damage to the pipeline.

1. It can be used as a discharge valve or explosion-proof pipe valve in high-end water diversion projects.

2. It can be used as a liquid level or pressure regulating valve for water source storage.

3. It can be used as a flow regulating valve in pipe network water delivery projects.

4. It can be used as a pump start protection valve or water and gas flow regulating valve in water purification or sewage treatment projects.

5. It can adjust the pressure balance of the pipe network during water supply.

Technical Features

It is a valve that can meet various special adjustment requirements. Its adjustment function is achieved by moving the piston-like valve plug in the valve cavity along the axial direction (water flow direction) to control the outlet area of the water flow.

Working Principle

The piston flow regulating and pressure regulating valve is mainly composed of a main valve consisting of a valve body, a water outlet valve body, a valve seat, a piston, a squirrel cage (blade ring), a valve stem, a crank, a connecting rod, a sleeve, a guide rail, a piston rack, and a sealing ring, plus an electric drive device, a PLC control system, and a pressure sensor (flow meter).

The adjustment of the piston flow regulating and pressure regulating valve is mainly achieved by changing the medium flow area between the closing part (piston) and the valve seat sealing surface, so as to achieve the purpose of regulating the flow (or pressure).

The valve body is designed as an inner and outer cylindrical structure, so that the structure of the valve is more in line with the water flow control technology.

The regulating mechanism is a crank slider mechanism, and the closing part slider is a cylindrical piston, which can be guided by the guide rail in the wide body cylinder to move along the central axis of the pipeline, thereby changing the flow area to achieve the control and regulation function.

The inner cavity of the valve body is a streamlined central axis symmetrical flow channel, so that the fluid is well guided in the valve body, with small water resistance and low head loss.

The cross section of the water flow at any position in the valve cavity is annular. The annular throttling surface of the piston at any position ensures the linear operation characteristics of the valve.

The crank slider mechanism operates stably and reliably, with constant output torque, and closes quickly at first and then slowly, so no water hammer is generated.

Nominal pressure PN: 1.0～6.4MPa

Nominal pressure Class: 150～300LB

Strength test: PN×1.5

Seal test: PN×1.1

Operating temperature T: -40～150℃

Applicable media: Water, air, gas, steam, etc

Operating mechanism: Worm gear drive, electric drive, pneumatic drive, hydraulic drive