Hydrogen Back Pressure Regulators Equilibar® GSDM and GSDH Series

by Richards Industrials

  • Equilibar Hydrogen back pressure regulators GSDM and GSDH series have a unique design that offers superior precision and instantaneous response to process fluctuations
  • The multi-orifice fluid path is advantageous especially for low flow rates, gas, and mixed phase fluids
  • Can handle corrosive media, and extreme temperatures
  • Precise pressure control for H2 and O2 gas streams in water electrolysis, and level control for alkaline solution electrolysis
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Hydrogen back pressure regulators Equilibar® GSDM and GSDH series

  • Equilibar GS back pressure valves provide stable pressure control for gases, liquids, and mixed-phase fluids in port sizes from 1/4″ (DN8) to 1″ (DN25)
  • They are available in SS316L, Hastelloy C22 or C276 and with specialized cleaning and materials such as Monel for enriched oxygen applications.
  • The GS Series comes in different trims and pressure ratings to suit the process parameters.

Key features

  • The Equilibar valve is a dome-loaded pressure regulator with pilot operation. This means that gas or air is fed into the top (dome) area of the regulator to provide the pressure setpoint for the process.
  • The unique Equilibar design with multi-orifice fluid path offers superior precision especially for low flow rates, gas and mixed phase fluids, corrosive media, and extreme temperatures.
  • The supple diaphragm is the only moving part, resulting in frictionless operation and instantaneous response to changes in process flow or pressure conditions.
  • Equilibar GSD regulators are easily automated using an electronic pressure regulator to set the setpoint for the dome-loaded operation
  • Provides excellent pressure control of H2 and O2 gas streams in water electrolysis, level control of alkaline solutions, and can be used in closed loop flow control

Application areas

  • Equilibar back pressure regulators are used for precision pressure control of gas streams in the electrolysis process. The dome-loaded design can facilitate pressure control of each stream, or dP control between the two streams
  • Electrolyzer Back Pressure Control
  • Fuel cell test bench back pressure control
  • High flow, high dp flow control

Hydrogen Back pressure electrolysis with Equilibar BPR

Project cases

  • Hydrogen Fuel Cell Testing Equipment
  • PEM Fuel Cell Testing Equipment
  • Fuel Cell Test Equipment for SOFC

Hydrogen Back Pressure Regulators Equilibar – Product Demonstration


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  • Equilibar is your partner for hydrogen back pressure regulators. Contact us – we are looking forward to hearing your requirements.
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Equilibar Hydrogen Back Pressure Regulators GSDM and GSDH Series

Data Sheet

Equilibar Hydrogen Back Pressure Regulators GSDM and GSDH Series

Installation Manual

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      Richards Industrials

      Richards Industrials is the parent company to Equilibar and LowFlow Valves.

      Equilibar® dome-loaded, multiple orifice back pressure regulators work in a different way, providing solutions for demanding fluid control challenges. They are easily automated and respond in milliseconds to accurately maintain control, making them ideal for challenging electrolysis and fuel cell applications. Their unique design allows them to precisely control pressure across a wide range of flow rates for gas, liquid and mixed phase fluids.

      LowFlow Valve is an industry leader in precision fractional flow products used to control the flow of liquids and gases across a diverse range of industrial applications. They are designed to control pressure or flow at tight tolerances while under extreme circumstances.

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