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Relays and Control Modules

RCC-1505/1506/1507/1508

These main valve capacity relays are designed for use in pneumatic control circuits. RCC-1505/1506 are addition relays for adding 2 signals up to 30 psig (207 kPa). They are intended for use in systems where the output signal to the controlled device is to be the sum of the 2 different source...

RCC-1509/1510/1515/1516

These relays are proportional main valve capacity booster devices. They are designed for pneumatic control circuits when amplifying the volume of control air in the circuit is necessa ry. System transmission lag is minimized when used in conjunction with a proportional controller operating...

RCC-1511/1512

RCC-1511 and 1512 are main valve capacity ratio relays designed to provide an output signal in proportion to the input. Each 1 psi change to the input yields a 2 psi change to the output. They are used in pneumatic control circuits when the final control device must be controlled by a signal...

RCC-1513/1514

RCC-1513 and 1514 main valve capacity averaging relays are proportional devices designed to average two signals in pneumatic control circuits. They are used where the desired output signal to the controlled device is to be the average of two different source signals. The air output volume is...

RP470

Three-port relays used in HVAC systems to perform a variety of relay functions; transmit the higher of two input signals, lock out one pressure signal when a second signal is higher, or transmit the lower of two pressure signals. Replacement devices are available for Johnson, Powers, Robertshaw...

RP471

The four port, snap acting relay converts a proportional air pressure change from a controller to a positive (two-position) pressure change. It can also divert a supply line to one of two branches. Replacement device is available for Johnson, Powers, Robertshaw, Barber-Colman, and older...

RP670

Pneumatic switching relays block, divert, or bleed pneumatic air lines when pilot pressure is changed from one specific value to another. Commonly applied in Day-Night, Summer-Winter, Start-Stop, On-Off-Auto and other multiple condition systems where control sequence is changed as conditions...

RP7517

Electronic-Pneumatic Transducers are used in electronic pneumatic control systems to convert a proportional electric output signal from a controller into a direct-acting, proportional pneumatic signal.

RP7517

Electronic-Pneumatic Transducers are used in electronic pneumatic control systems to convert a proportional electric output signal from a controller into a direct-acting, proportional pneumatic signal.

RP913

A diaphragm logic pressure selector selects the highest and/or lowest branch pressure input from zone thermostats to operate final control elements in pneumatic control applications. Replacement devices are available for Johnson, Powers, Robertshaw, and Barber-Colman devices.

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