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How to Properly Size a Gas Regulator

What You Need to Know Before Buying a Gas Regulator

You always have to think safety when it comes to gas regulators, so you can't guess at it.  Here are the some things you need to know before you order one.

1. Inlet Pressure:  Available inlet pressure can be given as:

  • Inches Water Column, Ounces, or Pounds

2. Outlet Pressure:  Desired outlet pressure can be given as:

  • Inches Water Column, Ounces, or Pounds

3. Flow Rate:  Required maximum flow rate can be given as:

  • BTU per Hour or Cubic Feet per Hour (CFH)

4.  Pipe Size:

  •  It would be helpful to know the pipe size that the regulator will be connected to.  The regulator should not be sized by the existing pipe size only.  In many applications it will be the same depending on the answers to the above questions.

5.  Type of Gas

  • The type of gas is normally natural gas, but it could be propane or another type of gas. 

6.  Installation Location:

  • Knowing whether the regulator is being installed indoors or outdoors can make a difference in product selection.  If mounted indoors, there might be options to save you time and money by eliminating the need to run a vent line to the outside.  If it is mounted outdoors, one that is properly protected from the elements will reduce future trouble calls from your customer.

7. Generator Application:

  • If this regulator is being installed for a generator, it is sized differently due to the initial surge of consumption during startup.


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