BELIMO SRF24A-SR-5

The BELIMO SRF24A‑SR‑5 actuator is engineered for robust, precise control of ball valves and butterfly valves in HVAC, water flow, or ventilation systems. Because it offers modulating control (DC 2–10 V input) plus position feedback (DC 2–10 V), this actuator integrates seamlessly into building automation or BMS setups — letting facility managers adjust valve/damper position as needed, and monitor actual position remotely.

With 20 Nm of torque, the actuator can handle moderate to large valves under pressure, ensuring reliable opening/closing or flow regulation. The built‑in spring‑return “fail‑safe” function automatically returns the valve to closed position on power failure, helping protect systems from uncontrolled flow or leaks — critical for safety or energy‑saving in commercial or residential HVAC setups.

Installation is simplified through direct mounting on valves with ISO F05 flange — often requiring only a single screw — which saves installation time and reduces complexity. For maintenance or manual override, technicians can use the hand‑crank to adjust valve position, then lock it with the built‑in switch. Because the unit is maintenance‑free and protected by robust housing (IP54), it stands up to dusty or humid environments. Compared to generic actuators without feedback or fail‑safe, SRF24A‑SR‑5 offers superior reliability, safety, and automation‑ready control — making it a strong choice for building owners, HVAC contractors, and facility managers who want dependable valve regulation.