Honeywell RP971 Pneumatic Ratio Relay
Pneumatic Ratio Relay
RP971
A four port non-bleed pneumatic relay which produces a modulating pressure output, proportional in a fixed ratio to pilot input changes. It is used to control pneumatic valve or damper actuators in sequence from a single thermostat. Replacement devices are available for Johnson, Powers, Robertshaw, Barber-Colman, and older Honeywell devices.
• Adjustable pilot start point pressures.
• Two pilot pressure spans available.
• Four sharp-barb air connections.
• Molded plastic construction with neoprene.
• Mounting clip provided.
Select a link under the "item" tab below to order.
| Cat # | Includes |
| RP971A1007 | 14003030-002 Mounting Clip and scaleplate with psi markings |
| RP971A1015 | 14003030-002 Mounting Clip and scaleplate with psi markings |
| RP971A1023 | 14003030-002 Mounting Clip and scaleplate with kPa markings |
| RP971A1031 | 14003030-002 Mounting Clip and scaleplate with kPa markings |
| Type: | Pneumatic, Four Port Ratio Relay | |
| Dimensions, Approximate: | 2 in. diameter x 2 5/8 in. deep (52 mm dia. x 67 mm deep) | |
| Action: | Direct Acting | |
| Airflow Usage: | 0.002 scfm (1.0 mL/s) maximum | |
| Air Connections: | Barb fittings, Port 1: 1/4 in. (6 mm) O.D. plastic tubing; Other Ports: 5/32 in. (4 mm) O.D. plastic tubing | |
| Capacity: | 0.039 scfm at 1 psi differential (18 mL/s at 5 kPa differential) | |
| Operation: | Produces modulating pressure output proportional to pilot pressure input changes | |
| Operating Humidity Range: | 5 to 95% RH | |
| Temperature Range: | 0 F to 140 F (-18 C to +60 C) | |
| Maximum Safe Operating Pressure: | 30 psi (205 kPa) | |
| Pilot Start Pressure: | Adjustable 0 to 10 psi (Adjustable 0 to 69 kPa) | |
