Maxitrol R8110-2042 Black Spring 20-42" WC 210D

The Maxitrol R8110-2042 Black Spring Pressure Regulator is calibrated to be used in HVAC systems that have a spring range of 20-42" of water column and a model designation of 210D. It is a spring-based mechanism that controls the flow of gas in response to a change in pressure to maintain the system within the predetermined limits. The regulator is fixed to the gas line of a furnace, boiler, or any other equipment that operates on gas, and the outlet and inlet ports must be aligned properly.