Maxitrol 325 Series Appliance Gas Pressure Regulators

  • CSA certified for 2 psi & 5 psi inlet pressure
  • Suitable for multi-positional mounting, and pilot flow applications
  • Ambient Temp Range: -40 to 205 Deg F
  • Housing Material: Aluminum
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Maxitrol 325 series appliance gas regulators are pounds to inches regulators. These feature a high leverage valve linkage assembly to deliver a positive dead-end lockup. These regulators are capable of precise control from full flow down to pilot flow.

Pipe Sizes range from 3/8″ to 2″ threaded connections with NPT or ISO7-1 threads.  Maxitrol 325 series regulator models are 325-3, 325-5, 325-7A, 325-9, and 325-11. In summary, these have larger capacities respectively, see technical documentation here for specifications.


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 325 Regulator Accessories

Maxitrol 325 Series Gas Pressure Appliance Regulators

Maxitrol 325-3-3/8, Appliance Gas Regulator, 3/8″NPT
Maxitrol 325-3-1/2, Appliance Gas Regulator, 1/2″ NPT, Violet Spring
Maxitrol 325-3-1/2, Appliance Gas Regulator, 1/2″ NPT, Yellow Spring
Maxitrol 325-5-3/4, Appliance Gas Regulator, 3/4″ NPT
Maxitrol 325-5-1, Appliance Gas Regulator, 1″ NPT
Maxitrol 325-5-1/2, Appliance Gas Regulator, 1/2″ NPT

Technical Documentation

Download pdf files:

Maxitrol Series 325 Regulators

Maxitrol Spring Selection Chart