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Air Relays are designed to provide highly accurate and reliable output pressure control to a large variety of applications across multiple markets. Versions offered include pilot operated, multi-stage 1:1, positive and negative bias adjustments, internal and external bias adjustments, reverse acting, high flow and high relief capacity.
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ControlAir’s precision pneumatic relays are multi-stage pressure relays that offer fine adjustment and maximun stability under variable operating conditions. Superior sensitivity senses output pressure deviations to within 1/4 inch of water column pressure. Our Air Relays are positive and negative bias capable, when adjusted for positive bias, output is directly proportional to the input signal plus the bias setting. Output pressure can never go below the value of the bias setting regardless of signal pressure. When set for negative bias, the output pressure will remain at minimum until the signal pressure is some value greater than the negative bias. The high relief capacity of these units provides increased exhaust capacity and their high flow relief valves ensure quick “blow down” for release of downstream pressure.
Applications for precision air relays include:
The Mite Series of pneumatic relays offer precise control of air or gas service. Their snap-acting design automatically trips on either an increasing or decreasing signal. Mites are rugged, compact units engineered for high density applications. They are constructed to last and “make decisions” with crisp precision, cycle after cycle.
Mite 70 Snap-acting control relay with manual reset Will either lock-up or vent control pressure to a valve when tripped
Mite 71L/71H High pass or low pass pneumatic selecting relay Automatically selects the higher or lower of two input signals
Mite 73 Snap-acting air signal monitor Accepts up to four inputs and can be reset automatically
Mite 74 Snap-acting control relay with integral 3-way or 2-way valve Combines a Mite 70 with a precision 3-way or 2-way valve
Mite 85 Snap-acting 3-way valve with two trip points Automatically activates back up controller if primary fails