Equilibar precision back pressure regulator Equilibar performance comparison chart
The precision of equilibar regulators is unparalleled in low and medium pressure applications. Chart illustrates typical performance in the 0-50 psig range.

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Equilibar GS Series Brochure

Equilibar Back Pressure Regulator

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Unique pressure control technology for highly demanding applications.

Our dome-loaded back pressure regulators work in an entirely different way from traditional solutions. Even if you don't require our high precision, we offer unique solutions for each of these critical challenges:

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Critical Service Advantages

High Precision

Inlet pressure matches reference pressure within 1-2% through wide range. Used in may test systems throughout many industries. See performance curves.

Computer Automation

Our sensitive dome-loaded design makes automating your process pressure easy and precise. See an example of automated pressure control.

High Pressure Service

Maximum pressure up to 5000 psig. Somewhat higher for custom applications. Learn details about our Instrument Series regulators.

High Temperature

Our stainless diaphragms can be used to 327C in many applications. Useful in petrochemical gas analysis and research (details).

Ultra Low Pressure Service

Using delicate diaphragms, our technology gives precision down to 0.02 psig (0.5 inWC). (details).

Aggressive Chemistry

Our many material options include 100% PTFE construction as well as Hastelloy C276 and SS316. Our products can be made compatible with virtually every aggressive chemical known. (details)

Ultra Low Flow Service

By far the lowest flow rate available, down below Flow Coefficient 1E-8 (<0.1 ml/min gas or 0.001 ml/min liquid). (details)

Low Dead Volume Service

Our 1/16" tube fitting option provides for total dead volume of 0.2 ml. Useful for High Performance Liquid Chromatography and gas analysis services. (details)

Two-Phase Flow

Our unique design allows for liquids and gases to flow together while maintaining incredible inlet pressure stability. (details)