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VAV-PRC011M-EN 123
Pneumatic Controls
Height: 4.1" (104.1 mm)
Weight: 12 oz (340 g)
Pneumatic Damper Actuator
Specifications
Effective Area
8 sq inches (51.6 sq cm)
Normal Rotation
100 degrees
Spring Ranges
Model 3631–5000: 8-13 psi (55.2–89.6 kPa)
Model 3631–8000: 3-8 psi (20.7–55.2 kPa)
Supply Connection
3/16" (4.8 mm) nipple for ¼" (6.4 mm) O.D. tubing
Weight
1.5 lbs (680 g)
Ambient Limits:
Operating:-20 to 120°F
(-28.889 to 48.889°C)
Shipping:-40 to 140°F (-40 to 60°C)
Reversing Relay
Specifications
Factory Setting
Contingent upon the selected control option
Generally set for 8 psig in. = 8 psig out or 9 psig in=9 psig out (55.2 kPa in. = 55.2 kPa out or 62.1
kPa in. = 62.1 kPa out)
The pneumatic actuator is designed for use on VAV terminal units in HVAC
systems. The damper actuator mounts to a standard ½" diameter shaft by a
pin and cross hold arrangement, retaining clip, and non-rotation bracket.
Two model actuators are offered with spring ranges of 3–8 psi or 8–13 psi.
Tubing Connections:
1/4" O.D. tubing connections
The pneumatic reversing relay is a proportional device that reverses the
action of the input signal. It is used to change a direct-acting signal into a
reverse-acting signal or to change a reverse-acting signal into a direct-acting
signal. This relay is used to match the operating pressure range of controlled
devices (valves, pressure switches, etc.) to the output pressure range of a
controller (such as a thermostat). The output response will always remain in
1:1 proportion to the input signal, but the relay includes the capability to bias
the output signal.
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