Equilibar Vacuum Regulator Performance | Equilibar Precision Pressure Control

Equilibar Vacuum Regulator Performance

Incredibly stable vacuum control across varying flow rates!

The Equilibar precision vacuum regulator offers nearly flat-line vacuum pressure control across three to four orders of flow magnitude. It is available in sizes from 1/4″ to 2.5″ and larger.

Detailed performance curves are provided for the EVR-3 3/8″ regulator, though the same flat-line performance can be expected for other models when properly sized.

Equilibar Vacuum Regulator

Stability across widely varying flow rates — Four orders of magnitude!

This chart shows flat line pressure stability across an incredible 4 orders of flow rate magnitude. Competitive data, where available, is typically published across a narrow range of flow.

Why is ultra low flow performance important? If your flow rate falls below the minimum for the regulator, then excessive vacuum can result.

Equilibar Vacuum Regulator Performance ultra wide flow rate


Stability across varying Supply Pressure

This chart at right shows the excellent vacuum stability as the vacuum pump supply pressure varies widely.

Equilibar Vacuum Regulator Supply Chart


Selecting the right size

This chart shows the projected vacuum performance at various regulator body sizes. If you don’t have a prefered piping size in mind, select the smallest regulator that gives the precision that your application requires.

Equilibar flow sizing chart

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Jeff Jennings, Equilibar president, with schematic

Seven Ways to Dome Load

Equilibar’s back pressure regulators (BPRs) are dome loaded.  This means that the pressure setpoint is provided by a fluid that is fed into a chamber on the top (dome) of the regulator. The pressure of the fluid (either gas or liquid) is set by a second regulator called a pilot regulator.  The loading mechanism is Read More

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