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Quick Details

  • Standard or Nonstandard: Standard
  • Structure: Pressure Reducing
  • Pressure: Other
  • Power: Hydraulic
  • Material: Aluminum
  • Temperature of Media: High Temperature
  • Place of Origin: United States
  • Model Number: R622
  • Brand Name: FISHER
  • fisher: Fisher gas regulator
  • Control Spring:: Spring Wire
  • Pressure Registration: Internal
  • Diaphragm:: Delrin

Packaging & Delivery

Packaging Details standard carton
Delivery Time 3 weeks


R622 gas pressure Regulator
Improved Accuracy
Superior Relief Performance
Corrosion-Resistant Materials
Inlet Screen

R622 Second-Stage Fisher Gas pressure Regulators


Type R622 gas regulator is designed for Two-Stage domestic applications up to 1 400 000 BTU per hour / 15,8 SCMH. The Type R622’s time proven design and corrosion resistant materials, provide a recommended replacement life of 20 years. Type R622 contains a high performance relief valve and a large 3/4-inch screened vent to limit downstream pressure to less than 2 psig / 0,14 bar in an overpressure situation as required by NFPA 58. The relief valve design exceeds the industry standard by limiting the downstream pressure to 2 psig / 0,14 bar even in a double failure situation when used with a Type R622H or R122H First-Stage regulator. The Type R622 is adjustable from 9 to 20-inches w.c. / 22 to 50 mbar.
For easy system checks, the Type R622 has 1/8-inch NPT built-in gauge taps, orificed to a No. 54 drill size, on both the upstream and downstream sides. This regulator also features a large 3/4-inch drip-lip vent design.  




Body Size and End Connection Style

1/2-inch FNPT, 1/2 x 3/4-inch FNPT, and 3/4-inch FNPT


Maximum Inlet Pressure
10 psig / 0,69 bar   


Outlet Pressure Range 

9 to 20-inches w.c. / 22 to 50 mbar    


Pressure Registration


Temperature Capabilities
-20° to 160°F / -29° to 71°C


Approximate Weights

1.4 Pounds / 635 grams


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China (Mainland) | Manufacturer, Trading Company
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