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Optimized for low-capacity heating systems
including the Q314
offering a high load-bearing capacity and sustained performance under the high-torque conditions typically found in Rheem and Ruud units
leading to nuisance lockouts
these models are technically identical and can be used interchangeably in all supported gas-fired applications
Schneider Electric (Barber Colman) MK4-3121 Actuator R-410A Optimized for low-capacity heating systemsThe Schneider Electric MK4 3121 is a commercial grade pneumatic damper actuator engineered for precise proportional control in complex HVACR systems. Designed as a direct successor in the Barber Colman lineage, this unit features a rugged die cast aluminum housing and a high performance beaded molded neoprene diaphragm for maximum durability. It operates within an 8 to 13 psi spring range and includes a factory installed positive positioner
US$ 3749.50
US$ 4249.50
US$ 1999.50
US$ 1399.50
US$ 899.50
US$ 1399.50
