Ximimark 2Pcs 1/2" Thread Plastic Electric Solenoid Valve Water Inlet Flow Switch Magnetic Water Air Normally Closed Tools DC 12V N/C 0.02 to 0.8mpa

These worked great to fix a pedicure chair

ok

I bought this pair to hook up to an ESP32, to run the drip misters on my ferns and roses. Managed to get them running on the same PSU. Wired in a flyback resister and they're perfect. Honestly I have treated them like total crap - I just 3D printed a little cap to keep the connectors covered, and left them exposed to the elements - and they're still going strong, cycling several times per day, 3 Southern summers later. Lots of misunderstandings among the reviews here, people are not reading the specs fully. You do need a minimum pressure for it to work, I use ~25psi and it's fine. Also the solenoid is cooled by the water flowing through - if you run it dry, you will burn it out quickly. I'm writing this because I came back to but a few more pairs, create a few mini-manifolds around my yard.

Total rip. Neither one worked when applying 12v. I threw the package away, so I am stuck.

In general, and excelent product. It worked very well for my needs. One word of caution, the relay needs liquid flow for cooling. Do not run these with no liquid in the system! That means the source of the flow ALWAYS needs to have liquid in it. It can not run dry. There are very little technical information with them. It would be good to know the current needed to close the relay and the DC resistance ahead of time.

I'm usually not inclined to leave critical reviews, but I was sent two valves instead of three as advertised, which is a significant error and always kills my willingness to buy again from the same seller. That said, I only needed one for the intended application (DIY swamp cooler water flow control), and the valve I used tested fine and is working fine now. It's wired to a simple switch so that I can operate the externally mounted swamp cooler from inside my truck (specifically deciding whether to have water flowing or not or just operate the fan, which I have on a separate switch), and I'm glad I decided to go ahead and add this feature instead of having to get out (and thus lose cool air) to manually turn the water flow on and off. They seem to be well manufactured and the sizing is all correct, so they matched with the adapters etc. I got to connect them to the tubing I chose. (Disclaimer: I only tested the function of the valve I used, and didn't bother testing the other one, but it's a solenoid valve, it's not like they're easy to mess up, so I'm sure it's probably fine.) Looking forward to using the other one for any of a few future projects. And to be fair, at this price point, two for the price was still the best deal on Amazon. Just not inclined to rate highly when three are advertised and two are sent.

I use them for my greenhouse and converted a sprinkler controller to 12v dc for their operation. Don’t forget the diode block!!! These only hold pressure in the forward direction so back flowing will allow slippage. Will post a YouTube (under the valve name) on installing soon.

worked out very well