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Back Pressure Regulators / Relief Valves

225LP Low Pressure Series

Bryan Donkin 225LP

Designed for low flow capacities in a compact design. Its quick response and throttling capabilities make it ideal for commercial/industrial heating equipment requiring reliable protection.


  • Pressure Range (Setting): 12"WC - 72 PSI
  • Maximum Inlet Pressure: 30 - 150 PSI
  • Size Range: 1" & 2" NPT, 2" Flanged
  • Gases: Natural, Propane etc…
 

1289H High Pressure Series

Belgas P289

Designed for high flow capacities using a large diaphragm and pitot tube booster. Its quick response and throttling capabilities make it ideal for commercial/industrial heating equipment requiring reliable protection.


  • Pressure Range (Setting): 7"WC - 75 PSI
  • Maximum Inlet Pressure: 25 - 100 PSI
  • Size Range: 1" & 2" NPT
  • Gases: Natural, Propane, Compressed etc…
 

198H Industrial Series

Marshall Excelsior

A back pressure regulator designed for a large variety of process applications. Used for any type of industry and ideal for liquids as well as steam and gas applications.


  • Pressure Range (Setting): 15 - 200 PSI
  • Maximum Inlet Pressure: 250 PSI Above Set Point
  • Size Range: 3/4" & 1" NPT
  • Applications: Gases, Steam, Water, Oil etc…
 
Things you need to know to properly size a Back Pressure Regulator/ Relief Valves:
  • Required set pressure set point 
  • Type of gas to be regulated
  • Load/Capacity? (in Btu or Cfh)
  • Required connection size

Ventless Regulators
Norgas Controls has a large variety of ventless regulators for almost any application. These types of regulators are used only for indoors and simplify the installation by not needing to run a vent line to the outdoors.

 Find a Norgas distributor