Commercial Building Controls : Pneumatic Products : Pneumatic Relays : RP971 : RP971A1031/U
Wall, In-Line or panel mounted Pneumatic Four Port Ratio Relay
Overview
Pneumatic relay produces a modulating pressure output, and controls pneumatic valve or damper actuators in sequence from a single thermostat. Replacements are available for Johnson, Powers, Robertshaw, Barber-Colman, and older Honeywell devices.
Features
- Adjustable pilot start point pressures.
- Two pilot pressure spans available.
- Four sharp-barb air connections.
- Molded plastic construction with neoprene.
- Mounting clip provided.
Product Specifications
- Application
- Pneumatic, Four Port Ratio Relay
- Airflow Usage
- 0.002 scfm (1.0 mL/s) maximum
- Dimensions (in.)
- 2 in. diameter x 2 5/8 in. deep
- Dimensions (mm)
- 52 mm dia. x 67 mm deep
- Maximum Safe Operating Pressure (psi)
- 30 psi, maximum
- Maximum Safe Operating Pressure (kPa)
- 205 kPa, maximum
- Temperature Range (F)
- 0 F to 140 F
- Temperature Range (C)
- -18 C to +60 C
- Includes
- 14003030-002 Mounting Clip and scaleplate with kPa markings
- Mounting
- Wall or In-line or panel
- Operating Humidity Range (% RH)
- 5 to 95% RH
- Pressure Range (psi)
- Output Span--3 to 13 psi
- Pressure Range (kPa)
- Output Span--21 to 90 kPa
- Action
- Direct Acting
- 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
- Pilot Start Pressure (psi)
- Adjustable 0 to 10 psi
- Pilot Start Pressure (kPa)
- Adjustable 0 to 69 kPa
