Belimo SRF24A-SZ-O - spring-return rotary actuator for ball valves

Name: Belimo SRF24A-SZ-O - spring-return rotary actuator for ball valves
Brand: Belimo
SKU: SRF24A-SZ-O
Price: 1575.73 PLN
Availability: BackOrder

Belimo

zł1,575.73

VAT included

zł1,281.08 tax excluded

Modulating rotary actuator for ball valves with NO fail-safe function. The motor and spring torque is 20 Nm, the rated voltage is AC/DC 24 V, and the control signal range is 0.5...10 V.

When the power supply fails, the spring moves the valve to the open position. The motor running time is 90 s / 90°; the degree of protection is IP54.

Delivery in approx. 14 days

Belimo SRF24A-SZ-O actuator

Rotary actuator with modulating control and fail-safe function, designed for ball valves. The Y signal positions the valve for operation and simultaneously tensions the spring. When the power supply is interrupted, the spring moves the valve to the NO fail-safe position: valve open (A – AB = 100%). For valves with an L-port, the documentation specifies A – AB = 0%.

Key technical data

Rated voltage: AC/DC 24 V; frequency: 50/60 Hz.
Motor torque: 20 Nm; fail-safe function torque: 20 Nm.
Control signal range Y: 0.5...10 V; position feedback signal U: 0.5...10 V.
Motor running time: 90 s / 90°; fail-safe function running time: <20 s @ -20...50°C, <60 s @ -30°C.
Power consumption during operation: 5.5 W; in the rest position: 3 W; sizing power for cables: 8.5 VA.
Power and control connection: 1 m cable, 4x 0.75 mm².
Degree of protection: IP54; ambient temperature range: -30...50°C.

Installation and operation

The actuator is mounted directly on the ball valve using one screw. Its orientation relative to the valve can be selected in 90° increments. Manual operation is possible using a crank with a locking switch; the rotation angle is adjusted using mechanical stops.