What is the common operating gas pressure for natural gas in inches of water column?

What is the common operating gas pressure for natural gas in inches of water column?

• A. 3.0
• B. 3.5
• C. 4.0
• D. 2.5

Answer: (B)

Gas pressure for natural gas in residential appliances is given in inches of water column, a small unit used for very low pressures. The regulator feeding the burner is designed to deliver a steady, low pressure so the gas can mix properly with air and burn reliably. The typical operating pressure is about 3.5 inches of water column (roughly 0.12 psi). This value provides enough pressure to push gas through the burner and maintain a stable flame while staying within safe limits. That’s why 3.5 inches of water column is the standard for natural gas. Propane systems use a higher regulator output (around 11 inches wc), so the other numbers don’t apply to natural gas.

Gas pressure for natural gas in residential appliances is given in inches of water column, a small unit used for very low pressures. The regulator feeding the burner is designed to deliver a steady, low pressure so the gas can mix properly with air and burn reliably. The typical operating pressure is about 3.5 inches of water column (roughly 0.12 psi). This value provides enough pressure to push gas through the burner and maintain a stable flame while staying within safe limits. That’s why 3.5 inches of water column is the standard for natural gas. Propane systems use a higher regulator output (around 11 inches wc), so the other numbers don’t apply to natural gas.