The Marvair 70281 Control Board is a specialized 24-volt OEM electronic module engineered for Marvair ComPac

provided health and electrical specs match

Featuring a rugged aluminum die-cast housing and a specialized rubber seat poppet

Key Benefits Extended Service Life: Advanced EPDM compound is lab-tested to provide up to three times the lifespan of competitive inserts in high-cycle vibration environments

Thermal Resistance: Durable silicone construction withstands constant exposure to 121

Utica-Dunkirk 127000007 Fan Cycling Switch 321042-401 The Marvair 70281 Control BoardThe Utica Dunkirk 127000007 Fan Cycling Switch is a critical OEM component designed for high precision head pressure control in Dunkirk and Utica boiler systems. Engineered for reliability in hydronic heating applications, this pressure actuated switch monitors system temperature and pressure to cycle the fan, preventing rapid short cycling and maintaining optimal combustion efficiency. By regulating fan operation, the 127000007 ensures that the heat