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Overview

One- or two-pipe, direct- or reverse-acting, low- or high-capacity controller used with pneumatic actuators in central fan installations. Replacement devices are available for Johnson, Powers, Robertshaw, Barber-Colman, and older Honeywell devices.

Features

  • Adjustable setpoint and throttling range (Zero and span).
  • Direct Acting (DA) and Reverse Acting (RA).
  • Sharp-barb, push-on connectors for plastic tubing.
  • Field calibration possible.

Product Specifications

Application
Static or Differential Pressure
Maximum Safe Operating Pressure (psi)
25 psi
Maximum Safe Operating Pressure (kPa)
170 kPa
Temperature Range (F)
40 F to 120 F
Temperature Range (C)
5 C to 50 C
Comments
Low capacity branchline pressure
Pressure Ratings (psi)
Maximum Safe Static Pressure-- 28 in. wc
Pressure Ratings (kPa)
Maximum Safe Static Pressure-- 7 kPa
Action
Reverse Acting, Direct Acting
Number of Pipes
1
Mainline Pressure Range (psi)
16 to 25 psi
Mainline Pressure Range (kPa)
112 to 175 kPa
Throttling Range (in. wc)
0.06 to 0.5 in. wc (adjustable)
Setpoint Range (psi)
0 to ±8 in. wc (adjustable)
Setpoint Range (kPa)
0 to ±2 kPa (adjustable)
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