The SAR Snap Acting Relay is a narrow-band pneumatic controller designed for precise pressure switching in pneumatic control systems. It operates with an adjustable setpoint, directing full supply pressure to the output when the input pressure exceeds the spring setting. If the input pressure drops below the setpoint, the output equals the signal pressure. This rapid switching mechanism ensures accurate and responsive operation. Constructed from anodised aluminium, the SAR is suited for harsh environments, including offshore and sandstorm conditions. With a compact design, lockable adjusting screw, and precise low-hysteresis switching, it is ideal for integrating with pneumatic-controlled positioners.

Key features

Adjustable setpoint for pressure switching

Lockable adjusting screw for stability

Compact anodised aluminium housing

Operating pressure: 1.4 – 2.5 bar

Design pressure: 10 bar

Output connections: 1/4” NPT

Pilot signal connection: 1/8” NPT

Operating temperature: -20°C to 70°C

Suitable for single and double-acting actuators

Weight: 4 kg