Flow Switches Hayward / Pentair


Mod Squad
TFP Expert
Bronze Supporter
May 3, 2014
Laughlin, NV
The Pentair flow switch contains a thermistor so it can calculate salinity. In fact, thats what fails, not the switch itself.

You can add an appropriate temperature probe and wire that up on the Pentair. There is thread on the forum I believe about it.
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Mod Squad
TFP Expert
LifeTime Supporter
Jul 7, 2014
Bedford, TX

Are you replacing the flow switch because you have a flow problem or a salt level (thermister ) problem??

I ask because the thermister can be replaced, external to the SWCG, using a standard temperature probe.

Jim R.