What is the common pressure setting of gas regulators for natural gas delivered to burner orifices?

The common pressure setting for gas regulators delivering natural gas to burner orifices is typically 3½ inches of water column (wc). This pressure level ensures that the gas is supplied at an appropriate flow rate and pressure for safe and efficient combustion in appliances such as furnaces, water heaters, and stoves.

Natural gas appliances are designed with specific pressure requirements in mind, and 3½" wc is often sufficient to provide optimal performance while maintaining safety standards. This pressure allows for proper mixing of air and gas, facilitating complete combustion and minimizing the emission of harmful byproducts.

Different appliances may have varying requirements, with some needing lower or higher pressures, but 3½" wc is a widely accepted standard, making it a reliable reference point in the industry.