Research Series Back Pressure Regulators | Equilibar Precision Pressure Control

Research Series Back Pressure Regulators

Precision at high pressures and low flow rates

Equilibar’s Research Series back pressure regulators solve critical performance problems for laboratory and gas analysis systems worldwide. They are especially popular for applications such as catalysis research and reservoir core analysis.

Equilibar has several different trim styles and many different diaphragm materials to help us meet nearly every demanding research condition. Our Research Series work through an incredibly wide range of flow, pressure, and temperature. Materials include Hastelloy, SS316L, PTFE, and FFKM (Kalrez).

Typical temperature ranges are 150°C, 200°C (with viton seals and metallic diaphragm) and 327°C (with Kalrez seals and metallic diaphragm) for any of our standard Models with capabilities of up to 450°C with our special High Temperature Model, which utilizes Grafoil sealing gaskets.

Port sizes available for this series include 1/16″, 1/8″ and 1/4″ to accomodate most low flow / low dead volume requirements. For larger port sizes and flow rates see Equilibar’s General Service Series and Industrial Service Series.

No matter if your application requires precision pressure control of liquid, gas, mixed phases, or even a slurry, our Application Engineers can specify a suitable back pressure regulator for your application.

Request Pricing Technical Literature

Research Series Back Pressure Regulator

Our Research Series back pressure regulators offer amazing precision through flow rate turndown ratios of 100,000:1 or higher.



Choose Your Back Pressure Regulator

Our Product Selector allows you to search based on your process parameters. TRY IT NOW
Or always feel free to contact an engineer to discuss your needs.

Contact Us

  • If multiple fluids or phases, list all.
  • This field is for validation purposes and should be left unchanged.

Other Equilibar Back Pressure Products:

research series back pressure regulator Research Series Back Pressure Regulators 1/16" to 1/4"
up to 10,000 psig / 690 bar(g)
general service back pressure regulator GS series General Service Back Pressure Regulators 1/4" to 1"
up to 2500 psig / 172 bar(g)
industrial service back pressure valve BD seriesIndustrial Service Back Pressure Valves 1.5" to 6"
up to 1000 psig / 69 bar(g)
image of GS back pressure regulator with QPV pilot regulatorElectronic Back Pressure Regulators 1/4" to 4"
up to 5000 psig / 344 bar(g)

Equilibar News

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

Read More