Dwyer's V4 series vane-operated flow switch protects equipment and pipeline systems against damage from reduction or loss of flow. It can be used for fluids, gases, and flowing solids in pipe sizes 1-1/2" and larger.
The V4 uses a free-swinging vane that attracts a magnet within the solid metal switch body, actuating a snap switch by means of a simple level arm with no bellows, springs, or seals to fail. It installs directly into pipeline with a threadolet, tee, or flange, and the electrical assembly can be easily replaced without removing the unit from installation.
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