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Return line solinoid options?

afboundguy

Acan's are inedible candy
Moderator
BRS Member
In the planning process for the desk/stand combination and I want to put the small dorm fridge I have under the setup to store phyto and also put the phyto jar for dosing the tank in there and have the tubing run through the side (seen lots of DIY versions).

With the return fuge and dwarf seahorses tank seahorses do best with tank temps at 74. I have seen a few people who run vinyl tubing inside a small fridge as a DIY chiller and since I will have a fridge there with at least one hole in it I thought of trying to incorporate that design aspect as well since the fuge/dwarf seahorse tank would only need to go down 1-2 degrees of even that much.

I had thought of maybe splitting the return piping to one that goes directly to the tank and the other one going through the fridge and using a solenoid to control the temp as I wouldn't want to add another heater to the set up. This solenoid looks like it's all PVC and curious if anyone else has used a PVC solenoid valve with a controller to switch it on and off?

 
These actuated pvc ball valves probably won’t be suitable for the duty cycle depending on the outlet temperature you’re getting at steady state through the fridge. Might be more pricey but a pvc solenoid would probably be a better option, or making a closed circuit freshwater heat exchanger might be a more economical way to operate a chiller.
 
These actuated pvc ball valves probably won’t be suitable for the duty cycle depending on the outlet temperature you’re getting at steady state through the fridge. Might be more pricey but a pvc solenoid would probably be a better option, or making a closed circuit freshwater heat exchanger might be a more economical way to operate a chiller.
Do you have a link to a PVC solenoid?
 

Something like that, but I’d make sure with the supplyhouse or maker that the solenoid would be saltwater resistant.
 

Something like that, but I’d make sure with the supplyhouse or maker that the solenoid would be saltwater resistant.
Thanks!
 
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