Natural Gas Regulator Sizing | Itron Belas Control

 In Gas Regulators, Measurement and Control of Natural Gas

For Itron regulator sizing or Belgas regulators, there are parameters needed to select the correct natural gas regulator for an application. This is true, no matter the brand, whether Itron, Dungs, Emerson, Maxitrol, or Belgas. While there are automated sizing programs available on the internet, I still do it the old-fashioned way until these apps are unfailing. Call me old school, but it allows me to chat with our customers and assure them that they are getting the correct regulator for their application.

Request a Regulator Quote Here

Gas Regulator Sizing

If you have an application and would like to have a regulator sized, gather the information below and call us today at (303) 697-6701 or email info[at]

regulator sizingWhat type of gas are you regulating? While most of our customers are inquiring about natural gas or methane, we can assist in regulating other fuel gases.

What is the supply or inlet pressure? This is the regulator’s pressure upstream, and we refer to this as “P in” If you do not have a pressure gauge, you can always call your gas distributor or purchase one from us. We need the inlet pressure to select the correct pressure rating of the regular and determine the pressure drop across the valve. The units of measure for pressure are PSI (pounds per square inch) or inches of water column (“WC).

1 PSI = 28″ WC

What is the desired outlet pressure? This is the regulator’s downstream pressure, and we refer to this as “P out.” It can be the desired set point (e.g., 30 PSI) or a range (e.g., 10 to 20 PSI). The difference between the inlet and outlet pressure or upstream and downstream pressure is called the pressure drop.

P in – P out = pressure drop (or pressure differential)

Itron B34 gas regulatorWhat is the flow range? The flow and pressure drop will help determine the size of the regulator. Flow is typically expressed in CFH (cubic feet per hour or CHM (minute)

1 CF = one cubic foot of gas = 1,000 Btu
1 CFH = one cubic foot of gas per hour = 1,000 Btu/hour
100 CF = 100,000 Btu = 1 Therm

The following information is also helpful:

  • The desired pipe size
  • What is the application? What is the expectation of the regulator?
  • Is the regulator to be installed indoors or outdoors?
  • Is noise to be considered?

Without knowing the above parameters, we cannot accurately size regulators. Also, understand that if the settings change, we may recommend a different regulator.

Natural Gas Control

If you are interested in a natural gas regulator, we sell several leading brands, including Itron, Belgas, Dungs, Maxitrol, and Honeywell. If you are interested in viewing our regulators, visit Natural Gas Regulator.

Message us here.

Recommended Posts
  • Robby Causey

    Is there anywhere I can get a book or literature on studying more about gas and gas regulators in depth.

Leave a Comment

15 + thirteen =

Show Buttons
Hide Buttons
Jeffrey Cox and Bob Steinberg Sage MeteringGas Meter Accessories | Manifolds | Meter Set Hardware | Brackets | Natural Gas Flow Meters riser repai