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HR Heated Regulator

Brand: Welker, Inc
The Welker HR Heated Instrument Regulator is a single-stage, spring-loaded, electrically heated pressure reducing valve designed to provide an analytical system with a conditioned gas sample stream at a safe output pressure and temperature. The HR’s controlled heating compensates for the cooling brought on by the Joule-Thomson effect to prevent condensation and maintain sample integrity.

Turn Up the Heat

Energized by a direct power connection, the thermostatically controlled heating element ensures efficient heat transfer to prevent condensation. The wide temperature control range means you can set the thermostat above the hydrocarbon dew point of the gas in accordance with industry standards. With the heating element installed to the side of the HR, it’s well-suited to installations with height restrictions.

Have it Your Way

Multiple pressure control ranges let you adapt the HR to your instrument and application. The threaded HR is diaphragm-sensing for greater sensitivity, giving you more control when setting the outlet pressure. With a bolted spring housing and body, the piston-sensing HR can handle higher inlet and outlet pressures. The threaded body style comes with an ergonomic 4-point hand knob, making field adjustments quick, easy, and comfortable. A locknut prevents the spring setting from changing due to vibration to help maintain a constant outlet pressure and flow.
Features
  • IECEx / ATEX Certified
  • Side entry electric heating element with adjustable thermostat
  • Diaphragm- or piston-sensing with multiple pressure control ranges
  • Variety of body and seat materials
  • Ergonomic 4-point hand knob
Benefits
  • Safe to use in Ex areas around the world
  • Efficient heat transfer at the appropriate temperature
  • Well-suited to installations with height restrictions
  • Adaptable to pressure requirements of downstream equipment
  • Corrosion resistance and process fluid compatibility
  • Quickly, easily, and comfortably adjust the outlet pressure
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The Welker HR Heated Instrument Regulator is a single-stage, spring-loaded, electrically heated pressure reducing valve designed to provide an analytical system with a conditioned gas sample stream at a safe output pressure and temperature. The HR’s controlled heating compensates for the cooling brought on by the Joule-Thomson effect to prevent condensation and maintain sample integrity.

Turn Up the Heat

Energized by a direct power connection, the thermostatically controlled heating element ensures efficient heat transfer to prevent condensation. The wide temperature control range means you can set the thermostat above the hydrocarbon dew point of the gas in accordance with industry standards. With the heating element installed to the side of the HR, it’s well-suited to installations with height restrictions.

Have it Your Way

Multiple pressure control ranges let you adapt the HR to your instrument and application. The threaded HR is diaphragm-sensing for greater sensitivity, giving you more control when setting the outlet pressure. With a bolted spring housing and body, the piston-sensing HR can handle higher inlet and outlet pressures. The threaded body style comes with an ergonomic 4-point hand knob, making field adjustments quick, easy, and comfortable. A locknut prevents the spring setting from changing due to vibration to help maintain a constant outlet pressure and flow.
Features
  • IECEx / ATEX Certified
  • Side entry electric heating element with adjustable thermostat
  • Diaphragm- or piston-sensing with multiple pressure control ranges
  • Variety of body and seat materials
  • Ergonomic 4-point hand knob
Benefits
  • Safe to use in Ex areas around the world
  • Efficient heat transfer at the appropriate temperature
  • Well-suited to installations with height restrictions
  • Adaptable to pressure requirements of downstream equipment
  • Corrosion resistance and process fluid compatibility
  • Quickly, easily, and comfortably adjust the outlet pressure

Specifications

Materials of Construction

  • 316/316L Stainless Steel

Connections

  • ¼” FNPT

Pressure Control Ranges

  • 0 to 25 psig
  • 0 to 50 psig
  • 20 to 100 psig
  • 75 to 200 psig

Operation

  • Diaphragm-Sensing
  • Piston-Sensing

Feature

  • Thermostatically Controlled Heating Element

Maximum Allowable Operating Pressure

  • Bolted: 5000 psig @ -20° F to 120° F
  • Threaded: 2160 psig @ -20° F to 120° F

Electrical Area Classification

  • NEC Class I, Div. 1, Groups C &D

Options

  • Mounting Bracket
  • Relief Valve and Pressure Gauge

Power

  • 150 W
  • 200 W

Heating Element Temperature Range

  • 68° F to 212° F

Typical Applications

  • Natural Gas Sampling: Upstream of an analyzer as a standalone pressure control device or part of a conditioning system
  • ATEX/IECEx Option: Places where flammable gases are likely to occur in quantities sufficient to cause a fire or an explosion (AKA Ex areas, hazardous locations, hazardous areas, explosive atmospheres)