JTR-H Heated Joule Thomson Regulator Pressure Series A+ Corporation

JTR-H Heated Joule Thomson Regulator Pressure Series A+ Corporation is a revolutionary product containing four stages of heated pressure regulation in one 316 stainless steel housing. The design of the Heated Joule Thomson Pressure Regulator JTR-H Series separates it from current multi-stage heated regulators that are typically limited to two stages.

Specifically designed for gas analytical systems, the Heated Joule Thomson Pressure Regulator JTR-H Series prevents condensation of the sample gas from occurring as a result of Joule-Thomson (JT) cooling during the pressure reduction process of high pressure and high dew point gases or due to low operating or ambient temperatures.

The first three stages of the Heated Joule Thomson Pressure Regulator JTR-H Series reduce pressure by a set ratio & the fourth stage is user adjustable. This ensures that all stages remain functional and give the JTR-H Series the ability to auto-correct and maintain its outlet pressure during inlet pressure swings up to 5700 PSI. Inlet pressure swings commonly occur at natural gas storage facilities, making the JTR-H™ the regulator of choice for these applications.

The need for the JTR-H™ is best illustrated by referencing the natural gas phase diagram below. For this particular gas composition, the only regulator capable of preventing condensation and complying with the API 14.1 requirement of maintaining the sample 30°F above the hydrocarbon dew point is the JTR-H™. The Heated Joule Thomson Pressure Regulator JTR-H Series can be heated using either an electrical cartridge heater with a proportional temperature controller or a self-limiting block heater; both of which require a direct power connection.

The proportional temperature controller allows for precise temperature control using a digital temperature readout and is protected with a backup thermal cutoff. The self-limiting block heater provides a simple and reliable option that prevents temperature overload and is designed to be mounted in small enclosures or densely populated cabinets.

JTR-H Heated Joule Thomson Regulator Features

  • Patented multi-stage design
  • Preset, ratio controlled stages with user adjusted final stage
  • Two heating method options:
    • Cartridge heater with a proportional temperature controller
    • Self-limiting block heater


  • Prevents condensation:
    • Preserves sample integrity
    • Reduces regulator freeze-ups
  • Eliminates the need for multiple regulators in series
  • Maintains outlet pressure during large inlet pressure swings


  • Gas analytical sample conditioning systems
  • Petrochemical refineries
  • Chemical production facilities
  • Natural gas plants, pipelines, and storage facilities

Another Article:

JTR-H Heated Joule Thomson Regulator Specification

Maximum pressure rating 300 – 6000 psig (20.7 – 413.7 barg) per criteria of ANSI/ASME B31.3
Outlet pressure range 0-10 psig (0-0.7 barg), 0-25 psig (0-1.7 barg), 0-50 psig (0-3.4 barg),
0-100 psig (0-6.9 barg), 0-250 psig (0-17.2 barg), 0-500 psig (34.5 barg)
Temperature range *Ambient:
* Actual limit depends on sealing material chosen. JTR-H (CSA): -40 to 302°F (-40 to 150°C)
Refer to Temperature Range JTR-H (ATEX): -40 to 140°F (-40 to 60°C)
901-JTR: 0 to 145°F (-18 to 63°C)
Comparison Chart. *Process (all models):
-40°F (-40°C) to 300°F (149°C)
901-JTR controller:  95 to 300°F (35 to 149°C) set at 300°F (149°C);
backup thermal cutoff opens at 338°F (170°C)
Port sizes 1/4” female NPT
Cv Coefficient 0.009
Maximum flow rate ~10 SLM (consider heat transfer limitations)
Wetted materials Machined parts: 316/316L stainless steel / NACE compliant
All other metal parts: stainless steel / NACE compliant
Regulator seat material: PFA
Seals: User Defined
Electrical connection Conduit (CSA):   JTR-H: 1/2” female NPT
901-JTR: 3/4” female NPT
Cable OD (ATEX/IECEx):3/8” (10mm)
Power requirements JTR-H: 110/220 VAC, 80W or 24 VDC, 25W
901-JTR: 200 W @ 110 VAC or 700 W @ 240 VAC
Electrical approval CSA Certified Assembly: File # 235756; Class 1, Division 1, Groups B, C, & D; T3
ATEX/IECEx Heater Block (Model JTR-H only): II2G Ex db IIC T3

Download Data Sheet: Heated Joule Thomson Pressure Regulator JTR-H Series

Ref: geniefilters.com

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