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Premier Control Technologies Fluid Solutions

LowFlow JRH Series High Pressure Low Flow Pressure Regulating Valve

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Express Delivery available, less than 1 week!

  • Express delivery available, less than one week!
  • Inlet pressures up to 276 bar (4000 PSI)
  • High flow rate coupled with high rangeability reduces need for reduced trim sizes

JRH Series of high pressure regulators from LowFlow have the ability to handle high pressures as well as low flow rates. Available with a fixed Cv of 0.8 and either DN10 or DN15 (3/8” or 1/2”) line sizes.

JRH series can accept inlet pressures of up to 276 bar (4000 PSI) and has a maximum pressure drop of 207 bar (3000 PSI). Six different spring rates exist to allow the pressure range to be controlled down to as little as 0.14 bar (2 PSI) or as much as 31 bar (450 PSI) dependant on spring rate selected.

Further regulator options include:

  • Panel mounting if the regulator needs mounting within an instrument panel.
  • Captured vent, featuring a 1/8” FNPT port located on the spring house, a vent tube can be attached to the regulator to contain any hazardous or toxic fluids or gases.
  • Self relieving, used for internal venting of downstream pressure to allow for an immediate reduction in pressure setpoint and automatically alleviates regulator lockup
  • Locking wire, uses a lead sealed metal wire to physically hold the adjusting screw in place to prevent setpoint changes.
  • Tamper proof, replaces the standard adjustment knob with a stainless steel acorn nut
  • Lockout device, a two piece polypropylene enclosure which encapsulates the adjustment knob and prevents unwanted setpoint changes.


Common process applications and industrial uses include:

  • Flame ionization detectors
  • Gas chromatography
  • Industrial controls
  • Research and sampling systems

Other features

  • Top entry design facilitates in-line cleaning and maintenance
  • Optimized internal volume
  • Jorlon diaphragm material provides exceptionally long life
  • Seat Type: KEL-F / Viton
  • Barstock construction guarantees material integrity and surface finish. Standard material is 316L stainless steel, others are available include Hastelloy C, Monel, Alloy 20.
  • KEL-F soft seat material for ANSI Class VI shutoff


The LowFlow JRH Series High Pressure Low Flow Pressure Regulating Valve is widely used in the following industries:

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