Have you ever wanted to control the flow of a liquid using your computer or microcontroller, but didn't know how? Well, here's how: The 12V solenoid controlled fluid valve. Simply connect a fluid source to the 3/4" threaded inlet and it will interrupt the flow until 12V is applied to the fast-on connectors on the solenoid.
Note: This is not a gravity-feed solenoid. This means that you will need enough water pressure to fully open the valve. Check the datasheet below for exact details. It operates at a minimum of around 3 PSI, allowing around 3 L/min of flow. Although the datasheet shows the valve working at 220 VAC, it's actually 12 VDC. Our 350 GPH pump does not have enough pressure for this valve. A garden hose or other pressurized system should work just fine.
To control the solenoid from a microcontroller, you'll need to add a flyback diode and a MOSFET/Relay. For more information, check out the application circuit in our diodes tutorial. The solenoid will simply be added as a load on the MOSFET or relay of your choice.
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Based on 6 ratings:
1 of 1 found this helpful:
I originally purchased this item for my hydroponics garden. Tests show the valve only works while under water pressure, kind of a safety feature. Then I though about a fountain display I wanted to build. I just purchased 8, 1/4" direct stream water nozzles. Besides interfacing this valve to standard pipe is the creation or purchase of a 12 DC, 8 channel control box.
There is many possibilities and uses for this product. Still wish for a low pressure valve for my hydroponics.
2 of 2 found this helpful:
It works well for it's purpose; quick reaction times.
If you use this in a home garden setup, I recommend getting PVC adaptors to take the threads from pipe style to garden hose style.
I would recommend using blade connectors instead of soldering to the connection tabs; I had a hard time getting the solder to stick properly.
This is just what I needed thanks for all the spec on it that helped a lot.
That has been working well to control the drip system in my garden. But why did they make it male to male? You'll have to get a gender changer and apply a lot of plumbers tap to make it not leak.
I ran this off a garden hose with ample pressure to the garden irrigation I've set up, off of a 12v 3.3amp PSU.
For the first 30 seconds or so after switching the valve on, the pressure is about 80% of what it was before the solenoid was installed. After those thirty seconds, the pressure drops dramatically to about 30%, and all the sprinklers and sprayers just start spurting little puddles. If the solenoid is switched off and then on again, the pressure is good for another 30 seconds. I'm assuming it's because my hose is probably running at around 0.3 Mpa, and my flow rate is supposed to be around 22 lpm. This solenoid's data sheet (well, the 1/2" version listed anyways) says it needs 0.8 Mpa to reach 35 lpm. Unfortunately 0.8 Mpa would probably explode most of the 1/4" irrigation plugs.
Also, the solenoid was hot to touch after my initial tests (about 10 minutes of use).
If flow rate/pressure stability/lengthy use is your goal, this doesn't cut it. For quick fun hobby applications, it should work great.
Hmmm, this isn't behavior we've seen with this unit before. It sounds like you may have received a faulty unit. We're sending you out a new one, and hopefully that will fix the problems you're seeing.
Unlike other sellers this is advertised correctly; customer service quickly responded to a question - this is a normally closed valve. Was able to fit connectors on to run power leads; connection with garden hose water source pretty solid. Overall this valve works quite well.