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Wall, In-Line or panel mounted Pneumatic Capacity Relay
Direct acting, modulating relay provides increased capacity of the branchline pressure to the final control device. Replacement devices are available for Johnson, Powers, Robertshaw, Barber-Colman, and older Honeywell devices.
Wiring-Typical piping for RP971 Pneumatic Capacity Relay
Product Data and Specifications-Capacity Relay
Installation Materials-Installation Instructions for RP970, RP970A Pneumatic Capacity Relay (English)
Engineering Guides/System Guides-Pneumatic Relays and Switches
Conversion Kit to convert switches