PRODUCT SPECIFICATIONS > INSTRUMENTATION
Clark Solutions
120 Series, Pressure, Vacuum, Diff. Pressure & Temp. Switches
Explosion Proof, Adjustable Ranges 30" Vac to 6000 PSI,
-180°F to 650°F

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DIMENSIONS (INCHES)
120 Series, Explosion Proof
Internal set point adjustment, dual contacts
Models J120, J120K, C120, F120
Explosion-Proof Indicating Temperature Controls
Model 820E, single switch, external adjustment and temperature indication, dual conduits
Model 822E, dual switch, external adjustment and temperature indication, dual conduits
Diagram 2
Dimension A
Range Code Inches NPT
126-124 8.13 1/4
S126B-S164B 8.58 1/2
270-376 7.85 1/4
450, 452 9.80 1/4
453, 454 9.10 1/4
550, 552 9.75 1/4
553-555 9.25 1/4
612, 616 8.65 1/4
701-705 8.31 1/4
Differential Pressure
147-157 8.44 1/4
S147B-S157B 8.44 1/2
456-559 9.40 1/4
Temperature
120, 121 10.00 Immersion Stem
2BS-8BS 9.90 Bulb & Capillary
13272, 13322 - Immersion Stem (Freeze Protection)
13273, 13321 - Bulb & Capillary (Heat Tracing)
Diagram 4
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