Honeywell 4 Port Ratio Relay (5 psi input span for 3 to 13 psi output)

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. Features Adjustable pilot start point pressures. Two pilot pressure spans available. Four sharp-barb air connections. Molded plastic construction with neoprene. Mounting clip provided. Specifications Description: Wall, In-Line or panel mounted Pneumatic Four Port Ratio Relay Type: Pneumatic, Four Port Ratio Relay Action: Direct Acting Operation: Produces modulating pressure output proportional to pilot pressure input changes 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) Mou...