Overview :

The J21K differential pressure switch monitors the difference between two system pressures or vacuums and senses excessive
flow deviation, or verifies that a filter is clogged. The J21K's rugged design - with epoxy coated enclosure and
sealed metal bellows - lends itself to exacting applications.Widely used in refrigeration (chiller) and compressor applications,
the J21K can be used for filter status monitoring and proof of flow.

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