• 250 psig (17.2 bar) maximum inlet pressure
  • 10 psi (0.69 bar) non-adjustable outlet setting
  • Propane flow capacities up to 1,100,000 BTU/hr
  • 1/4in female NPT inlet and 1/2in female NPT outlet
  • 3/8in NPT screened vent
  • -20 to 160°F (-29 to 71°C) operating temperature
  • 20-year recommended replacement life
  • UL listed & CRN certified


The Fisher R122H first-stage regulator is designed to reduce the tank pressure for the second-stage regulator in domestic applications. Inlet and outlet gauge taps allow for easy system testing, even in underground tanks. The combination of a high capacity relief valve and large vent provide overpressure protection that exceeds UL standards. When used in conjunction with an R622 or R652, the two-stage system will limit the downstream pressure from the second-stage to 2 psig even in a double failure situation.

Fisher equipment must be installed, operated and maintained in accordance with Federal, state, and local codes and Fisher instructions. Only personnel trained in the proper procedures, codes, standards and regulations of the LP-gas industry should install and service this equipment.

In Stock

Part Number Price Available
$76.56 8 in stock

Interested in Other Part Numbers?

Other part numbers are available to order but are not currently in stock. Current availability for non-stock parts is "Usually ships in 4 weeks". Click here to select options