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Description
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The Model AFS-228 is a general purpose proving switch designed for HVAC and Energy Management applications. It may be used to sense positive, negative, or differential air pressure.

The plated housing contains a diaphragm, a calibration spring and a snap-acting SPDT switch. The sample connection located on one side of the diaphragm accepts 1/4'' OD metallic tubing via the integral compression ferrule and nut.
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Manuals (1)
Specs
Switch:

SPDT

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