Built from high-grade brass to withstand high-temperature environments

If your system uses NPT

7 amps at full load

a full HD44AR135 assembly is the most reliable fix

which is vital for long-term mechanical reliability in demanding environments

Belimo FSNF24-S-FC Actuator 322838-753 Built from high-grade brass toThe Belimo FSNF24 S FC Actuator is a dedicated fire and smoke damper actuator designed for UL555 and UL555S applications in modern HVAC systems. Operating on a 24V AC DC supply, this spring return unit provides 36 in lb of torque, ensuring reliable on off control for life safety dampers. Engineered for high temperature resilience, the FSNF24 S FC features a rugged housing capable of withstanding the rigorous demands of smoke control sequences. This