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Discussion Starter · #1 ·
I am looking for a cold water valve that can be electrically controlled on a standard 120 AC circuit or DC batteries. Components would need to be intended for outside use. I would appreciate knowing the correct name/terminology for finding/ordering one, as well as suggestions on where I could find one.

I would like to be able to attach a motion sensor to control a water valve outside the house so that drinking water turns on when the sensor is approached by a dog. Currently the only available motion controlled drinking fountain available for sale has a reputation for not being dependable, so I would like to make my own DIY dependable dog watering fountain.

Thank you in advance for your assistance.
 

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It is called a solenoid and can be purchased from any commercial/industrial supply house. Like Grainger. You order the solenoid with the coil voltage you want and the NPT pipe size you want to use. Very simple. Google "solenoid" and you will see.
 

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Discussion Starter · #3 ·
I am having difficulty wading through the numerous search results for "solenoid", even when I limit the search to water/liquids. The various sellers assume that folks already know about the various types of solenoids and their usage and compatible valving and application details. Solenoids are in vehicles, pneumatic and just about anything else that has a electronic control.

Is there anything that I can read to understand what is in the search results for solenoids where the search result is limited to drinking water systems ? Especially what valving is compatible with each type of solenoid?

Sorry, but I can't decipher the descriptions of the items provided by vendors of solenoids for drinking water systems.
 

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Semi-Pro Electro-Geek
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Use a sprinkler valve. They are cheap and every home improvement store sells them. You'll need a 24VAC transformer to power it (also sold by the same stores for sprinkler systems).
 

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Electrical Contractor
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1,994 Posts
buy a cheap motion detector flood light take the motion detector part and wire it up to a 120v solenoid and make sure you have GFCI protection.
 

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Go and visit an irrigation supply house.
There are many types of solinoid valves available,
Which one depends on pressure and what plumbing
fittings you want to use.
I am sure that if you explain it to them they will
advise you on what to use.

simplist is to use a motion sensor a suitable wall wart
and a suitable valve.
 

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Go to a pet supply, buy a Lixit, and be done with it.
It is mechanical rather than electric, but it works well.
 
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