All About Proportional Valves – PSI Automation

All About Proportional Valves!

Operate precisely

All About Proportional Valves!

Operate precisely

What are proportional valves?

Proportional valves are used for converting electrical signals into pneumatic pressure. As the electrical input is increased, the pressure output increases, proportionately.

As such, they are sometimes referred to as electrically controlled regulators.

How do they work?

There are two main types of proportional valves.

I/P converters convert current (I) input, typically as 4 ~20mA, into pneumatic pressure (P) output, whereas E/P converters converts voltage (E) input, usually 0 ~ 10VDC into pneumatic pressure (P) output.

There are a variety of different configurations for these valves. But essentially, a varying electromagnetic force is created, that precisely moves an internal mechanism such as a spool or diaphragm, which allows for a proportionate amount of flow or pressure.

What are the benefits?

Fast, reliable, and accurate – ensuring maximum efficiency and control
Operated remotely – reducing the need for manual operation
Achieves stable pressure quickly – reducing cycle times and increasing longevity of your equipment

How to select the right proportional valve for your application