Air Relay

Air Relay is a reliable unit for achieving stay-put condition of control valves, on air supply failure. The air pressure is blocked inside the diaphragm chamber (or piston cylinder) of the actuator, when the supply air pressure falls below the desired set valve. Quality materials are used and each unit is pressure and leak tested, to ensure long and trouble free operation.

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Detailed Description for Air Relay

A relay is an electrically operated switch. Many relays use an electromagnet to mechanically operate a switch, but other operating principles are also used, such as solid-state relays. Relays are used where it is necessary to control a circuit by a low-power signal, or where several circuits must be controlled by one signal.



·         Manual relieving provided

·         Corrosion - resistant construction

·         Economic design

·         No leakage in pressurised condition

·         No drift in the cut - off value

·         Ideal for control valves and power cylinders

·         Design for double acting actuator available

·         Aluminium or Stainless Steel material option

·         Mounting bracket provided for easy installation

·         Minimum moving parts

·         Excellent stability and repeatability



·         To achieve stay put condition, on supply failure. In built manual relief valve is provided if the control valves has manual handwheel.

·         This exhausts the air from the diaphragm chamber when the handwheel is operated to avoid damage to the actuator diaphragm.



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