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Thread: how to reattach a thermostat sensor

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    how to reattach a thermostat sensor

    I replaced some of my PVC and have to reattach the thermostat. What type of glue/cement should I use to reattach? it looks the the original glue/cement was a rubber material?

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    Mod Squad Bama Rambler's Avatar
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    Re: how to reattach a thermostat

    We need to know more about what you're talking about. Do you mean pvc piping? If so, what is it going to? And by thermostat, do you mean thermocouple or thermistor? Or something else?
    Dave J. TFP Moderator
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    Re: how to reattach a thermostat

    Yes, PVC piping between pentair filter and pool heater. I've replace this section of PVC and the old PVC line had a thermostat for the heater inserted into the PVC (thermocouple). There was about 1/4 drill hole in which this was inserted. I need to replace this back into my new PVC line. The old one was secured with a metal clamp and some sort of rubber sealant of some kind. My question is what is that sealant? Hope this clarifies...

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    Mod Squad Bama Rambler's Avatar
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    Re: how to reattach a thermostat

    I'm not sure what the compound was. Can you post a pic of the sensor? Maybe we could suggest a better way to install it.
    Dave J. TFP Moderator
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    Re: how to reattach a thermostat

    The attached images show the heater thermostat (which gets inserted into the PVC pipe through about 1/4 drilled hole), and a picture of the prior PVC pipe with the compound showing on the pipe.
    Attached Images Attached Images

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    Mod Squad Bama Rambler's Avatar
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    Re: how to reattach a thermostat

    That just looks like silicone sealant. Just get some 100% silicone sealant and run a bead around the hole and place the sensor in the hole and squash the sealant enough to seal good and let it cure overnight without any water or pressure on it.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
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    4knights's Avatar
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    Re: how to reattach a thermostat

    I have a hose clamp wrapped around the pipe and over the sensor, no leaks since the sensor has a gasket/o ring. The silicone will act as your gasket and the hose clamp makes sure it stays in place.
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    Re: how to reattach a thermostat

    Sounds like a plan, Thanks!

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    Re: how to reattach a thermostat

    Final Pics - project complete. Thanks!
    Attached Images Attached Images

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    Mod Squad Bama Rambler's Avatar
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    Re: how to reattach a thermostat

    Looks good.

    I'm sure someone will appreciate that in the future.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
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