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Gems FS-400 Flow Switch, 3/4" NPT, 90° Flow Path, SPDT, 20 VA, Bronze Body, Adjustable Range 0.75-4.0 GPM
https://www.branom.com/shop/26600-gems-fs-400-flow-switch-3-4-npt-90-flow-path-spdt-20-va-bronze-body-adjustable-range-0-75-4-0-gpm-548623
https://www.branom.com/web/image/product.template/548623/image_1920?unique=c1b9893
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