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Pneumatic Relays

IMAGE MODEL DESCRIPTION RESOURCES
FAIRCHILD MODEL 1500A - POSITIVE BIAS RELAY 1500A

FAIRCHILD MODEL 1500A - POSITIVE BIAS RELAY

Supply pressure 250 psig max. Flow capacity (SCFM) 150 . Sensitivity 1' Water Column. Adjustment range 0.5-10 psig.
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FAIRCHILD MODEL 90/91 - HI & LOW SELECTOR RELAY 90/91

FAIRCHILD MODEL 90/91 - HI & LOW SELECTOR RELAY

Maximum signal pressure 200 psig. Minimum switching differential less than .1 psig. Maximum differential between signals 100 psig. Port size 1/4' NPT/BSPT.
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FAIRCHILD MODEL 14 - POSITIVE & NEGATIVE BIAS RELAY 14

FAIRCHILD MODEL 14 - POSITIVE & NEGATIVE BIAS RELAY

Flow capacity 40 SCFM @ 100 psig supply, 20 psig set point. Sensitivity 1/2' Water Column. Supply Pressure 250 psig maximum. Output Pressure 150 psig maximum. Pipe size 1/4' NPT - 3/8' NPT/BSPT.
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FAIRCHILD MODEL 85D - MULTI STAGE BIASING RELAY 85D

FAIRCHILD MODEL 85D - MULTI STAGE BIASING RELAY

Flow capacity 14 SCFM. Pressure change under flow conditions less than 0.1 psig. Maximum supply pressure 250 psig. Maximum signal or output pressure 150 psig. Adjustment range 0-20 psig to 1-100 psig. Pipe size 1/8' NPT - 3/8' NPT/BSPT.
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FAIRCHILD MODEL 2500A - BIASING REVERSING RELAY 2500A

FAIRCHILD MODEL 2500A - BIASING REVERSING RELAY

Supply Pressure 250 psig Maximum. Output Pressure 150 psig Maximum. Flow Capacity (SCFM) 150 @ 100 psig supply & 20 psig set point. Sensitivity 1' Water Column. Adjustment range 0.5-10 psig to 2-150 psig. Pipe size 3/8' NPT - 3/4' NPT.
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FAIRCHILD MODEL 21 - ADJUSTABLE RATIO RELAY 21

FAIRCHILD MODEL 21 - ADJUSTABLE RATIO RELAY

Flow capacity 40 SCFM @ 100 psi supply, 20 psi set point. Sensitivity 0.5' Water Column. Supply pressure 250 psi maximum, Out let pressure 150 psi maximum. Ratio range 30:1 through 1:30. Pipe size 1/4' NPT - 3/8' NPT/BSPT.
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FAIRCHILD MODEL 22 - COMPUTING RELAY 22

FAIRCHILD MODEL 22 - COMPUTING RELAY

Adjustable bias over range -18 to + 15 psig. Input and output pressure range 3-15 psig. Maximum operating pressure: Signal and output 50 psig Supply 150 psig. Pipe size 1/4' NPT - 3/8' NPT.
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FAIRCHILD MODEL 24 - SNAP ACTING RELAY 24

FAIRCHILD MODEL 24 - SNAP ACTING RELAY

Maximum supply pressure 120 psig. Signal range 2' Water Column to 120 psig. Repeatability 0.2' Water Column. Adjustment range 2' W.C.-10 to 2.0-120. Inlet and Outlet 1/4' 3/8'.
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FAIRCHILD MODEL 15 - POSITIVE BIAS RELAY 15

FAIRCHILD MODEL 15 - POSITIVE BIAS RELAY

Flow Cap. 40 SCFM @ 100 psig. Sensitivity 1/4' Water Column. Supply Pressure 250 psig max. Output Pressure 150 psig max.
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FAIRCHILD MODEL 25 - REVERSING RELAY 25

FAIRCHILD MODEL 25 - REVERSING RELAY

Flow capacity 40 SCFM @ 100 psi supply, 20 psi set. Sensitivity 1/8' Water Column. Supply Pressure 250 psi maximum. Output pressure 150 psi maximum. Adjustment range 0-10 psig to 2-150 psig. Pipe size 1/4' NPT - 1/2' NPT/BSPT.
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