Pressure Regulator for Fuel Cells | Equilibar Precision Pressure Control

Fuel Cell Pressure Regulator

  • Equilibar schematic fuel cell

Back Pressure Regulators for Fuel Cells

The Equilibar® precision back pressure regulator is the perfect fit for many fuel cell applications. Fuel cell testing systems, in particular, benefit from the high sensitivity in the low to mid pressure ranges that is lacking in most competitive products.

Low Flow Control
Incredible 1000:1 flow rate turn-down ratio

Equilibar’s current “GR” trim was specifically designed in response to the demanding flow rate requirements of the fuel cell testing industry. These GR trim regulators can provide stable stack pressures through ultra wide flow rate ranges required for rigorous test protocols. Gas flow rate control is possible down to below 1 ml/minute.

Equilibar Pulse Generating Application with a fuel cell

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Ease of computer automation

The dome loaded design is sensitive to changes in an Electro-Pneumatic Regulator (EPR) as small as 0.001 psig, giving your process computer unprecedented control of gas system pressures. While most fuel cell testing systems use closed-loop PID feedback on the stack outlet pressure sensor, the incredible precision of the Equilibar BPR would allow for full system control by using only a manual pressure regulator or an EPR with open-loop control

See product details  for our GS (“General Service”) Series back pressure regulators.

Contact one of our Applications Engineers to help select the perfect back pressure regulator for your fuel cell application.

GS Series Equilibar Back Pressure Regulator

The Fuel Cell and Hydrogen Energy Association is dedicated to the commercialization of fuel cells and hydrogen energy technologies.

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PEM Fuel Cell System by Greenlight Innovation


PEM Fuel Cell Test System by Greenlight Innovation


GS Series Equilibar Back Pressure Regulator is designed specifially for fuel cell applicationsThe Equilibar® GS Series is a high performance back pressure regulator ideally suited for Fuel Cell Testing applications.

Equilibar GS Series Brochure


GS Series Brochure




See Fuel Cell Testing case study from Charles University in Prague

One of our GS series regulators could be a good fit for your fuel cell application.

GSD4 General Service Back Pressure Regulator

GSD4 General Service Back Pressure Regulator

Port Sizes:
Typical Pressure Ranges:
0 - 1 in WC
0 - 10 in WC
0 - 5 psi
0 - 10 psi
0 - 20 psi
0 - 30 psi
0 - 60 psi
0 - 100 psi
0 - 150 psi
0 - 200 psi
0 - 250 psi
0 - 300 psi
0 - 400 psi
0 - 500 psi
Key Applications:
Technical Details

Watch the video below of how the Equilibar Back Pressure Regulator works.

How Equilibar Back Pressure Regulator Works

Work Categories

Equilibar News

dome loaded regulators in water technology

Equilibar’s Jeff Jennings shares his expertise on dome loaded regulators in Water Technology Magazine

The May/June issue of Water Technology Magazine features a six-page article by Equilibar founder Jeff Jennings that provides an overview of dome loaded regulators. The article compares dome-loaded technology to traditional spring-loaded technology. It also explains the differences between a pressure reducing regulator and a back pressure regulator. “Over the years we’ve learned that there Read More

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