Gas PipingQuestion 246 of 360
What is a common standard delivery pressure of natural gas to a typical single-family residence downstream of the utility meter?
a.About 1/4 psi, roughly 7 inches water column
b.About 15 psi
c.About 60 psi
d.About 100 inches water column
Explanation
A common residential natural gas service delivers roughly 1/4 psi, which is about 7 inches water column, at the outlet of the meter and pressure regulator. The appliance regulator then trims this to about 3.5 inches water column at the burner. Elevated-pressure (2 psi) systems exist but require a line regulator at each appliance.
Practice all 360 questions free — no signup required.
Related questions on this topic
- Which statement about listed flexible appliance connectors is correct?
- A sizing table (0.5 psi drop, natural gas) shows that 3/4-inch schedule 40 pipe at a 40-foot run carries 170 cfh, and 1-inch pipe carries 320 cfh. A section must supply a 250,000 BTU/hr load over that 40-foot run. What is the smallest listed size that works?
- Where should the sediment trap be installed in relation to the appliance shutoff valve and the appliance gas control?
- Low gas pressures for appliances are commonly expressed in inches of water column. Which instrument directly reads this pressure during setup and testing?
- When performing a gas piping pressure test, why should the test gauge have an appropriate scale for the test pressure?
- What best describes CSST used in gas distribution?
Last reviewed: · editorial process
PrepPass Editorial Team · Verified against California CSLB C-36 Plumbing Trade Examination · How we review