this differential air pressure switch is the industry standard for verifying fan proof of flow and preventing unsafe operating conditions in commercial boilers and air handlers

Constructed with high-grade materials to withstand high-ambient combustion chamber temperatures

and moisture common in demanding HVAC capacitor replacement environments

making it a versatile choice for both 120V and 277V fan coil unit applications

KMC Controls MCP-8031-2111 Actuator 30067439-890 this differential air pressure switchThe KMC Controls MCP 8031 2111 is a high performance pneumatic damper actuator designed for heavy duty HVAC air handling systems and VAV terminal units. Engineered with a rugged metal body, this unit is specifically rated for ceiling plenum installations where nonmetallic components are restricted. Featuring a 3 12 PSI spring range and a 1 11 16 inch stroke, the MCP 8031 2111 provides reliable proportional damper control or two position operation.