Standardized Compatibility: Adheres to ISO 4400 and EN 175301-803 Form A standards for seamless integration with existing solenoid coils

providing the high-torque performance required for industrial HVAC repair

the internal ball plug may be sticking

Standardized Electrical Specs: Operates on a standard 24V furnace control circuit for broad compatibility with existing transformers

By preventing dust and debris from fouling pneumatic thermostat orifices

Belimo AFRBUP-S Actuator 321142-301 Standardized Compatibility: Adheres to ISOThe Belimo AFRBUP S is a heavy duty, spring return damper actuator designed for reliable on off control in demanding HVAC systems. Engineering 180 in lb of torque, this unit provides failsafe operation for large control dampers, ensuring mechanical spring return during power interruptions. Its universal power supply accepts any input voltage from 24 to 240 VAC, simplifying inventory and field replacements for commercial HVAC maintenance. Equipped with