Honeywell Pneumatic Capacity Relay

The RP970A is a direct acting, proportional relay suitable for use in HVAC systems to increase the capacity of a branchline signal to a pneumatic valve or damper operator. The RP970A provides a 1:1 pressure ratio. It can also transmit the lower of 2 pressures.
Branch Line Pressure range: 0...124kPa
Max. safe air pressure: 205kPa
Air connection: barb for 5/32" or 4 mm O.D. plastic tubing