What is the normal residential gas pressure regulator setting typically expressed as?

What is the normal residential gas pressure regulator setting typically expressed as?

• A. Two inches water column
• B. Three point five inches water column
• C. Six psi
• D. One inch water column

Answer: (B)

Gas pressures in homes are kept very low and described in inches of water column because that unit suits the small pressures involved. The normal residential regulator setting is three and a half inches water column, which is about 0.125 psi. This level provides enough flow for typical appliances without exposing piping and equipment to higher, unsafe pressures. Values like six psi are far too high for residential gas systems, while one or two inches water column would often be insufficient for reliable appliance operation.

Gas pressures in homes are kept very low and described in inches of water column because that unit suits the small pressures involved. The normal residential regulator setting is three and a half inches water column, which is about 0.125 psi. This level provides enough flow for typical appliances without exposing piping and equipment to higher, unsafe pressures. Values like six psi are far too high for residential gas systems, while one or two inches water column would often be insufficient for reliable appliance operation.