A proportional valve is a type of control valve that regulates flow rate or pressure continuously in proportion to an electrical input signal — rather than just switching fully on or off like a standard solenoid valve.

Here’s Ekgas a breakdown

How It Works

The valve receives an analog electrical signal (for example, 0–10 V or 4–20 mA).

The valve’s actuator moves the spool or plunger to a precise position that corresponds to the input signal.

This allows variable control of fluid (air, gas, or hydraulic oil) flow or pressure.

Main Types

Proportional flow control valves – adjust how much fluid passes through.

Proportional pressure control valves – maintain a set pressure that varies with the input signal.

Applications

Industrial automation – controlling actuator speed or force.

Hydraulics and pneumatics – smooth motion control.

Combustion systems – fine-tuning fuel and air ratios.

Process control – maintaining precise pressure or flow in manufacturing.

Advantages

Smooth and accurate control.

Can be integrated into automated systems.

Reduces wear and shock compared to on/off valves.

That’s the proportionl vale, if you have any new comments please contac us, thank you!