What is a Pressure Reducing Regulator?

What is a Pressure Reducing Regulator?

Oil and gas producers use a Pressure Reducing Regulator to maintain a downstream pressure set point. It is a regulator, or “pilot-integrated valve,” because the pilot and the valve come together as one piece.

Some may also refer to this regulator as a “pressure control valve” or a “pressure reducer valve.” Unfortunately, some also confuse the Pressure Reducing Regulator with a Back Pressure Regulator.

Producers commonly use a Pressure Reducing Regulator as a suction controller or in a recirculation application on gas compressors or to supply fuel gas.

How Does a Pressure Reducing Regulator Work?

The regulator monitors downstream pressure. To adjust the set point, simply turn the adjustment bolt on top. This will either compress the spring or release spring tension.

When compressed, the spring pushes down on the sensing diaphragm assembly, positioning the pilot plug. The pilot plug allows upstream gas to flow under the motor valve diaphragm. The pressure is controlled under this diaphragm to position the plunger to any changes in flowing conditions.

If the pressure exceeds your set point, the upstream pressure pushes up on the sensing diaphragm assembly, which closes off the pilot plug. Gas then vents from underneath the motor valve diaphragm and your downstream pressure is regulated.

Because the diaphragm has a larger surface area than the plunger, the same pressure can hold a closed position.


If you have questions about the Pressure Reducing Regulator or any other Kimray product, reach out to your local Kimray Sales and Service Store or authorized distributors.

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Chris Mencor serves as Kimray’s International Director of Sales.