Relays

Name: Automatic Controls of Virginia Inc.
Address: 310 Hill Carter Parkway, Ashland, Virginia, 23005

Rotork Fairchild Relays reliably transmit, amplify, or modify pneumatic signals, ensuring precise, responsive performance in automated industrial control systems.

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Relay Type
- Adjustable Ratio Relay (1)
- Multi-Stage Positive Biasing Relay (1)
- Positive Bias Relay (2)
- Positive & Negative Bias Relay (1)
- Computing Relay (1)
- Selector Relay (2)
- Reversing Relay (2)
- Snap Acting Relay (1)
Pressure Range
- 2" W.C. to 10 psig : 0.006-0.7 bar : 0.63-70 kPa (1)
- -18-2 psig : -1.2-0.15 bar : -120-15 kPa (1)
- -18-10 psig : -1.2-0.7 bar : -120-70 kPa (1)
- -18-30 psig : -1.2-2 bar : -120-200 kPa (1)
- -18-100 psig : -1.2-7 bar : -120-700 kPa (1)
- 0-10 psig : 0-0.7 bar : 0-70 kPa (3)
- 0-20 psig : 0-1.5 bar : 0-150 kPa (1)
- 0.5-10 psig : 0.03-0.7 bar : 3-70 kPa (1)
- 0.5-30 psig : 0.03-2 bar : 3-200 kPa (5)
- 1-60 psig : 0.1-4 bar : 10-400 kPa (6)
- 1-100 psig : 0.07-7 bar : 7-700 kPa (1)
- 2-120 psig : 0.14-8 bar : 14-800 kPa (1)
- 2-150 psig : 0.1-10 bar : 15-1000 kPa (4)
Pipe/Port Size
- 1/8" (1)
- 1/4" (8)
- 3/8" (9)
- 1/2" (6)
- 3/4" (2)
Pipe/Port Thread Type
- NPT (10)
- BSPP (2)
- BSPT (8)
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Approvals
- CRN (2)
Hazardous Areas
- Acceptable in Zones 1–2 (gas, Groups IIA & IIB) and Zones 21–22 (dust). (2)
Max. Supply Pressure
- 120 psig : 8.0 bar : 800 kPa (1)
- 250 psig : 17.0 bar : 1700 kPa (7)
Max. Output Pressure
- 150 psig : 10.0 bar : 1000 kPa (3)
Flow Capacity
- 14 scfm (23.8 m³/hr) @ 100 psig : 7.0 bar : 700 kPa supply, 20 psig : 1.5 bar : 150 kPa setpoint. (2)
- 40 scfm (68 m³/hr) @ 100 psig, 7.0 bar, 700 kPa supply & 20 psig, 1.5 bar, (150 kPa) setpoint. (4)
- 150 scfm (255 m³/hr) @ 100 psig : 7.0 bar : 700 kPa supply & 20 psig : 1.5 bar : 150 kPa setpoint. (2)
CV Rating
- 0.23 (1)
Ratio Range
- 30:1 through 1:30 (signal pressure : output pressure) (1)
Supply Pressure Effect
- Less than 0.1 psig : 0.007 bar : 0.7 kPa for a 100 psig : 7.0 bar : 700 kPa change in supply pressure. (5)
- Less than 0.2 psig, : 0.014 bar : 0.14 kPa for 100 psig : 7.0 bar : 700 kPa change in supply pressure. (1)
Separate Supply to Pilot
- Separate Supply to Pilot (1)
Exhaust Capacity
- 2.5 scfm (4.25 m³/hr) where downstream pressure is 5 psig : 0.35 bar : 35 kPa above 20 psig setpoint. (1)
- 5.5 scfm (9.35 m³/hr) where downstream pressure 5 psig : 0.35 bar : 35 kPa above setpoint of 20 psig :1.5 bar : 150 kPa. (3)
- 11 scfm (18.7 m³/hr) where downstream pressure is 5 psig : 0.35 bar : 35 kPa above setpoint. (1)
- 14 scfm (23.8 m³/hr) @ 100 psig : 7.0 bar : 700 kPa drop (1)
- 40 scfm (65 m³/hr) where downstream pressure is 5 psig : 0.35 bar : 35 kPa above 20 psig : 1.5 bar : 150 kPa setpoint. (2)
Max. Signal or Output Pressure
- 150 psig : 10 bar : 1000 kPa (4)
- 200 psig : 14.0 bar : 1400 kPa (1)
Min. Switching Differential
- Less than 0.1 psig : 0.007 bar : 0.7 kPa (1)
Max. Differential Between Signals
- 100 psig : 7.0 bar : 700 kPa (1)
Repeatability
- 0.2” (0.5 cm) Water Column (1)
Signal Range
- 2” (5 cm) W.C. to 120 psig : 8.0 bar : 800 kPa (1)
Sensitivity
- 1/8" W.C. : 0.31 mbar : 0.031 kPa (1)
- Less than 1/4” (.64 cm) W.C. (1)
- Less than 1/2” (1.27 cm) W.C. (1)
- 1/2” (1.27 cm) W.C. (1)
- 1” (2.50 cm) W.C. (2)
Actuator Adjustment Type (for Output Pressure)
- Knob (1)
Ambient Temperature Limits
- -40° F to +200° F (-40° C to 93.3° C) (10)
Relief
- Relieving (1)
- Non-Relieving (1)
Tapped Exhaust Vent
- Tapped (7)
Tamper Proof
- Tamper Proof (4)
Elastomers Material
- Silicone (2)
- Viton (Fluorocarbon) (5)
Mounting Style
- Line/Pipe Mount (5)
- Bonnet Mount (1)
- Panel Mount (4)

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