4-port pneumatic manual switch w/ isolated pilot chamber (5 psi span)

Used to manually position a remote damper actuator or to reset the setpoint of a pneumatic controller. They can also provide minimum damper position by setting a minimum pressure limit in the branch line to the damper actuator. Replacement kits are available for Johnson, Powers, Robertshaw, Barber-Colman, and older Honeywell switches.

Features

• Two spans available as shipped. Six spans with breakaway stops on knob.
• Pilot bleed and isolated pilot models available.
• Wall or panel mounting.

Specifications

• Switch Type: Four-port pneumatic manual switch with isolated pilot chamber
• Switch Operation: Used to manually position a remote damper actuator or reset setpoint of pneumatic controller
• Airflow Usage: 0.022 scfm (9.8 mL/s)
• Air Connections: Barb fitting for 5/32 in. (4 mm) O.D. plastic tubing
• Maximum Safe Operating Pressure (psi): 30 psi
• Mounting: Panel or wall
• Operating Humidity Range: 5 to 95% RH
• Output Span (psi): 5 psi (with 188 degree knob rotation), 6.5 psi (with 244 degree knob rotation), 8 psi (with 300 degree knob rotation)
• Temperature Range: 0 F to 140 F
• Dimensions: 1-1/2x 3 in. deep
• Comments: The setpoint knob normally rotates 188 degrees. Two breakaway stops on the knob allow rotation of 244 degrees and 300 degrees.