Introduction to electric piston type flow and pressure regulating valve
1. Basic definition and structure
Electric piston type flow and pressure regulating valve is an automated valve that combines electric actuator and piston type fluid control structure, mainly used for precise adjustment of flow rate, pressure or flow velocity in pipeline systems. Its core structure includes:
Electric actuator: receives electrical signals to drive valve opening and closing, supports remote control or automation system linkage.
Piston valve body: By changing the opening of the valve port through the linear motion of the piston, continuous regulation of the fluid is achieved.
Sealing components: Wear resistant materials such as polytetrafluoroethylene and hard alloys are used to ensure sealing under high pressure differentials.
2. Working principle
Flow regulation: By controlling the position of the piston through an electric actuator, the flow area of the valve port is changed to dynamically match the system flow demand.
Pressure control: Using mechanical feedback from the piston or pressure sensor signals, adjust the opening in real time to maintain stable outlet pressure.
Flow state optimization: The valve body is equipped with a built-in flow guide structure to reduce fluid turbulence and water hammer effects, as well as reduce noise and vibration.
3. Technical features
High adjustment accuracy: The resolution of the electric actuator can reach 0.1%~1%, suitable for precision working conditions such as laboratories or medical fluid systems.
Wear resistant design: The piston and valve seat adopt non-contact or soft sealing structure, which extends the service life (especially in granular media).
Wide application range: Supports multiple media such as water, oil, gas, etc., with a pressure resistance level covering 0.1-42MPa and a temperature adaptability of -20 ℃~350 ℃.
Intelligent integration: can be connected to PLC and DCS systems, supporting PID closed-loop control or remote monitoring of the Internet of Things.
4. Typical application scenarios
Water supply network: regulate the regional water supply pressure to prevent water hammer from impacting the pipeline.
HVAC: Control the inlet and outlet flow of heat exchangers to optimize energy efficiency.
Industrial fluid systems: flow control of reactor feed in the chemical and pharmaceutical industries.
Fire protection system: Maintain pressure in the stabilizing tank to ensure stable water supply in emergency situations.