What is the common pressure in inches of water column (WC) needed from the gas regulator to the burner orifices for natural gas?

The standard pressure needed from the gas regulator to the burner orifices for natural gas is typically around 3.5 inches of water column (WC). This pressure ensures that the burner receives an adequate supply of gas to maintain proper combustion efficiency and safe operation.

Natural gas systems are designed to operate within this pressure range to facilitate optimal performance and to prevent issues such as incomplete combustion or gas appliance malfunctions. Maintaining the specified pressure is crucial for both safety and efficiency since deviations can lead to inefficient heating or potential hazards.

While other options represent pressures that might be applicable in different contexts or types of gas, 3.5 inches WC is the widely accepted standard for natural gas in residential and commercial applications.