Maxitrol RZ Series Zero Governor Regulators

  • Mount in an upright position only
  • Ambient Temp Range: -40 Deg to 205 Deg F
  • Housing Material: Aluminum
  • Approvals: CSA, UR, CE
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Maxitrol RZ Series Zero Governors are adaptable for air-gas mixing applications; because of the balanced valve construction, Z-models offer superior performance at an economical price compared with other types of atmospheric regulators. These models are used for flow control of burners, nozzle mixers, mixing tees and proportional premixes.


Suitable for natural, manufactured, mixed gases and liquefied petroleum gases. In addition, also for LP gas-air mixtures, and gases of DIN EN 437 gas family 1, 2, and 3.

Sizing a regulator

Know the following:

  • Gas Type
  • Available Inlet Pressure
  • Desired Outlet Pressure
  • Will the regulator control main burner and pilot load OR main burner only?
  • Required minimum and maximum flow rate in cfh or m3/h or Btu/h
  • Pipe Size

Ask us to help you size the regulator, engineering or product support. In addition, we can assist in changing your Maxitrol spring, in the regulator, to match your application needs.

Maxitrol RZ Zero Governors

Maxitrol R400SZ-1, Zero Governor, 3/8″ NPT
Maxitrol R400Z, Zero Governor, 1/2″ NPT
Maxitrol R500Z-1/2, Zero Governor, 1/2″ NPT
Maxitrol R500SZ, Zero Governor, 3/4″ NPT
Maxitrol R600SZ, Zero Governor, 3/4″ NPT
Maxitrol R600Z-1, Zero Governor, 1″ NPT

Technical Documentation

Download pdf files:

Maxitrol RZ Zero Governors

Maxitrol Spring Selection Chart