Hayward Flow Switch for Salt Cell, GLX-FLO-RP Metal Body 12 GPM

Quick answer The Hayward Flow Switch by FlowTrust scores 8.0/10 with us. Amazon owners rate it 4.0 out of 5 across 58 reviews, above the 3.8 average of the 22 pool & spa replacement parts we track. It was listed at $24.88 on Amazon when we last checked in September 2026.

The flow switch that protects the part that costs more to replace. When a Hayward Aqua Rite salt system reads No Flow, Check Flow or Inspect Cell, chlorine production stops and the pool starts to turn. This is the drop in fix.

Metal body, metal sensing probe. A paddle that sticks in the flow position keeps telling the control board water is moving when it is not, and the cell runs dry. The metal sensing probe in this switch interrupts the signal when it fails, so the board reads no flow and the cell stops.

A spec you can verify. Activation threshold is a manufacturer confirmed 12 GPM through 2 inch pipe. Standard 1/2 inch NPT male threads.

15 foot cable with an RJ style phone jack plug. Thread sealing tape included. Confirm the fit in two steps.

First, the part number: this replaces GLX-FLO-RP, GLXFLORP, GLX-FLO-HP and OPT-F/S. Second, the plug: your control board must accept a 2 wire RJ st

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