Generic Flow Switch (with Temperature Sensor)

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Generic Flow Switch (with Temperature Sensor) - PVC Tee Fitting Not Included

Part Number: GFS-TEMP

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Flow Switch with Temperature Probe

Warranty 1 Year Limited

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Reviews 64

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FAQ + Q&A
More Videos 5
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Standard Flow Switch, fits Hayward Aqua Rite, CircuPool Si/Universal, CircuPool RJ (3rd-gen.), and more. This item includes the Flow Switch and its 15' cable. No PVC T-Fitting is included.

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Flow switch

You told me what I needed. It was sent right out, and everything works fine. I really appreciate the time you took with me and helped me through what I needed. THANK YOU VERY MUCH, Barry

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Reviewed by: Barry Moore from Port Orange, Florida on 8/4/2025

Excellent customer service personnel

Perfect long distance diagnosis, perfect part to correct the problem. Thank you...

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Reviewed by: Juan Rodriguez from MOLINE on 7/4/2022

Flow switch

Easy to install works as it should

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Reviewed by: Shawn from New Jersey on 7/16/2022

Flow Switch

this is my 3th Flow Switch in 4 1/2 years !!!!

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Reviewed by: ANGELO SOUSA from Pembroke Pines on 2/19/2019

Flow switch

Switch sticks does not open to show flow. Priced to high for quality of switch

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Reviewed by: John Marshall from League City on 3/10/2024

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Q: Does the switch unthread from the T

Asked by: Kevin - 7/24/2022

A: Yes, that is correct.

Was this answer helpful? 2 of 2 Customer(s) found this Answer helpful.

Answer provided by: Discount Salt Pool (7/25/2022)

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Q: Will the system operate if flow switch is not working, the water is flowing but the light is red?

Asked by: DAne - 5/1/2023

A: Salt chlorinators will not generate chlorine if they think the water flow is not correct.

Was this answer helpful? 1 of 1 Customer(s) found this Answer helpful.

Answer provided by: Discount Salt Pool (5/2/2023)

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Q: Can I buy just the plug in piece.? (Like telephone plug in) wire just came out.

Asked by: Lisa Bascone - 6/15/2022

A: This part is only available as the flow switch that has the wire/plug built into it, there are no sub-parts available for this item.

Was this answer helpful? 0 of 1 Customer(s) found this Answer helpful.

Answer provided by: Discount Salt Pool (6/16/2022)

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Q: I have a cold reading on my panel will the flow switch cause this reading

Asked by: Danny Coker - 4/22/2024

A: The part you reference is used in models - the CircuPool RJ-PLUS Series and Universal Series - that do not have any cold water messaging. If you are receiving a (false) cold water warning from your chlorinator, please call our Technical Support team at (866) 766-5243 and they can assist you.

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Answer provided by: Steve (4/23/2024)

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Q: I bought a RJ45+ less than a year ago and I thought last summer the salt generator worked when my pump was at low RPMs. I just noticed my generator is saying low flow when my VS pump is at 1500 RPM. At what velocity does the flow switch stop indicating flow?

Asked by: Gerald Santoro - 5/24/2024

A: The thing to focus on here is any change from last year to this year.
There are several things to be checked on, starting with whether there has been any change to or addition of equipment in the circulation loop.
Next, check the filter pressure and then clean/back wash it to determine a range of filter pressure between a clean filter and its current state. Did the No Flow turn off after cleaning?
Remove the Flow Switch and determine whether it was in any way clogged, dirty, damaged, or ??? and see that it moves freely.
Is any other pump-impacted process operating during the low speed operation? Reschedule it.
Hopefully, one or more of these items was found to make a difference and can be managed.
Absent any adjustments or tweaks to your pool operation that restores low speed chlorination, you can also consider operating the chlorinator at a higher output level during periods of higher speed pump operation.

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Answer provided by: Steve (5/28/2024)

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Q: will it fit my circupool si 40?

Asked by: Ynot - 6/12/2025

A: Yes, this flow switch will fit all CircuPool Universal or Si Series Salt Chlorinators as well as the RJ PLUS Series too.

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Answer provided by: Steve (6/12/2025)

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Generic Flow Switch (with Temperature Sensor) - PVC Tee Fitting Not Included

Rating Snapshot

Average Customer Ratings

Q: Does the switch unthread from the T

Q: Will the system operate if flow switch is not working, the water is flowing but the light is red?

Q: Can I buy just the plug in piece.? (Like telephone plug in) wire just came out.

Q: I have a cold reading on my panel will the flow switch cause this reading

Q: I bought a RJ45+ less than a year ago and I thought last summer the salt generator worked when my pump was at low RPMs. I just noticed my generator is saying low flow when my VS pump is at 1500 RPM. At what velocity does the flow switch stop indicating flow?

Q: will it fit my circupool si 40?

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