for proper operation and to satisfy most local codes

this switch provides reliable differential pressure

and 881 cast iron models

Precise Monitoring: Delivers high accuracy (±0

it is factory-calibrated in the vertical position

York S1-025-36583-000 Actuator Refrigerant for proper operation and toThe York S1 025 36583 000 Actuator is a precision engineered 24V 25VA Proportional S R Act designed for seamless integration into York OEM HVAC systems. As a critical component for modulation, this proportional spring return actuator ensures accurate damper and valve positioning, delivering fail safe reliability in the event of a power loss. Engineered for high demand commercial and residential applications, it operates on a standard 24VAC control