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Premier Control Technologies Flow, pressure, level and temperature solutions

JB Series Back Pressure Regulator

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Express Delivery available, less than 1 week!

  • Express delivery available, less than one week!
  • Top entry design facilitates in-line cleaning and maintenance
  • Optimized internal volume

JB series of back pressure regulators from LowFlow are designed for gas use and to control the back pressure in applications which require very high pressures and low flow rates. Typically JB Series will be used in research applications or sampling systems for corrosive and speciality gases.

Inlet pressures are suitable for up to 68 bar (1000 PSI). Six different spring rates are configurable to the JB series which will allow back pressure control down to as little as 0.3 bar (5 PSI) or up to 52 bar (750 PSI) dependant on spring rate selected.

Various Cv ranges are also available from 0.05 up to 0.35.

Instrument build options include panel mount, captured vent, locking wire, lockout device or tamper proof systems.


Common process applications and industrial uses include:

  • Cannabis / Hemp Extraction / Supercritical CO2
  • Gas chromatography
  • Hydrogen Economy
  • Flame ionization detectors
  • Indistrial control
  • Pilot plants
  • Research and Development

Other features

  • Barstock construction guarantees material integrity and surface finish
  • High flow rate coupled with high rangeability reduces need for reduced trim sizes
  • Jorlon diaphragm material provides exceptionally long life
  • Seat Type: PEEK, KEL-F
  • Soft seat materials for ANSI Class VI shutoff
  • Sizes: DN8, DN10, DN15 (1/4″, 3/8″, 1/2″)
  • End Connections: Threaded, socket weld, flanged, others
  • Body Materials: 316L Stainless Steel, Hastelloy C, Monel, Alloy 20
  • Cv: 0.05, 0.15, 0.25, 0.35


The JB Series Back Pressure Regulator is widely used in the following industries:

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Richards Industrials