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Explanation of how to pilot your back pressure regulator

Equilibar® dome-loaded back pressure regulators offer high precision and repeatability. The back pressure regulator holds its upstream pressure typically within 0,2% of the applied reference pressure in research application. Setting a stable reference pressure is key to get the most out of the performance of your back pressure regulator. And so, the best performance of your process.

There are different methods on how to supply the reference pressure to your dome-loaded back pressure regulator. For starters, it is good to know that the compressibility of the media that you use in the reference helps to get good performance. The most common methods are therefore based upon applying a gas as a pilot media. In some applications, you can use liquids.

The first question you need to ask yourself is if you want to regulate manually (with a forward pressure reducing regulator) or automatically (with an electronic pressure regulator). Below you can find more in-depth information about these options.

In the below video we demonstrate using a (manual) forward pressure reducing regulator to set the pressure. This is connected to the reference port of the back pressure regulator and sets the required pressure on the dome of the back pressure regulator. If you forward to 0:33 in the video you can see this explanation (till 0:43).

The working of an Equilibar Dome Loaded Back Pressure Regulator

Low Pressure High Flow Regulators

Demonstration of the LPR2 High Precision Ultra Low Pressure Reducing Regulator

Electronic Pressure Regulator for High Pressures

Electronic Pressure Regulators from Equilibar

QPV High Resolution Electronic Pressure Regulator

High Electronic Pressure Regulator controls up to 3000 PSI (206 bar)

Adjusting the PID on an EPR-3000 Electronic Pressure Regulator

The functionality of the EPR-3000