Back Pressure Regulators for Fuel Cells
The Equilibar® precision back pressure regulator (BPR) is the perfect fit for many fuel cell applications. Fuel cell testing systems, in particular, benefit from the high sensitivity of the Equilibar BPR 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 “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.
Ease of computer automation
Equilibar BPRs operate using a pilot regulator on its dome to provide a setpoint. The dome loaded design is sensitive to changes in an Electro-Pneumatic Regulator (EPR) setpoint as small as 0.001 psig, giving a 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 allows for full system control using an EPR with open-loop control or simply using a manual pressure regulator as a pilot setpoint regulator.
Contact one of our Applications Engineers to help select the perfect back pressure regulator for your fuel cell application.
The Fuel Cell and Hydrogen Energy Association is dedicated to the commercialization of fuel cells and hydrogen energy technologies.
Customer Case Study – Improving catalysts for automotive fuel cells
Researchers at Charles University in Prague, Czech Republic, have successfully used an Equilibar® Back Pressure Regulator combined with a QPV electronic pressure regulator to provide precise control of fuel cell anode and cathode pressure across a wide range of test conditions. The research is part of vital international efforts to develop improved environmental catalysts for automotive fuel cells. At Charles University, fuel cell research is working to develop improved catalysts with the goal of lowering noble metal content, which would directly lower the cost of the power supply while also using more environmentally friendly materials. Read a detailed account in the link to the right.
PEM Fuel Cell Test System by Greenlight Innovation
The Equilibar® GS Series is a high performance back pressure regulator ideally suited for Fuel Cell Testing applications.
The Equilibar® BD Series with a QPV electronic pilot regulator for computer automation. BD valves are larger high performance back pressure regulator used in Fuel Cell Testing applications.
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.
- Port Sizes:
- Typical Pressure Ranges:
- 0 - 1 in WC
- 0 - 10 in WC
- 0 - 2 psi
- 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
- Key Applications:
For larger applications, a BD valve my be useful in your fuel cell testing application.
Watch the video below of how the Equilibar Back Pressure Regulator works.
How Equilibar Back Pressure Regulator Works