Siemens Combustion AGA22 Setpoint Spring 6"-48" WC

The Siemens Combustion AGA22 Setpoint Spring is an internal gas regulator to determine a variable outlet pressure range of 6 to 48 inches of water column for HVAC systems. Fitted with compatible gas pressure regulators, this spring dictates the reaction of the regulator to the change of line pressure that controls the amount of gas supplied to burners in heating parts. It is used in residential and light commercial furnaces, boilers, and unit heaters to ensure that the regulator keeps the proper pressure to allow the combustion to be stable and the system to perform consistently.