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Chrome-bevel sheet on grid paper — specs and return notes filed under the bay.
on 3-way valves
specifically superseding part numbers 62-23556-01 and 62-23556-02
providing precise temperature sensing and control for optimal boiler safety switch functionality
Maintenance Efficiency: Designed with transparent LED indicators for standby
A reset may only temporarily clear the error
Schneider Electric (Barber Colman) MK-3121 Actuator 30067439-890 on 3-way valvesOptimize your pneumatic control systems with the Schneider Electric MK 3121 Actuator, a precision engineered proportional pneumatic damper actuator designed for the professional HVACR contractor. This rugged unit features a 8 to 13 PSI spring range and a versatile 2 to 4 inch adjustable stroke, allowing for exact field calibration in air handling units, mixing boxes, and VAV systems. The MK 3121 is the primary direct replacement for legacy models MK
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