U.S. Solid 3/4" Brass Electric Solenoid Valve 110V AC Normally Closed Non-potable Water, air, Diesel

I purchased this solenoid valve and have been using it now for a little over three weeks in a water pipe application with a thermostatic controller. The quality of the valve is excellent and its functionality is reliable. Mine operates once "on" and once "off" for a total of 6-9 hours "on" time, 7 days a week during the summer (May thru Sept). The solenoid valve is easily disassembled and each of the three main components appear to be easily replaced. Mine did not come with any instructions, but it seemed pretty straightforward as there are only two electrical wires. Some have complained about non-standard pipe threads, but it is definitely NPT. I had no problems connecting red brass, galvanized, black iron, or PVC to the 3/4" female threads. One very important thing to remember is that the valve is unidirectional, not bidirectional, and is stamped with a small flow direction arrow on the brass body. If you happen to install it backwards, the valve becomes normally-open instead of normally-closed and gives the impression that it is a "normally-open" valve. I don't think it is intended to operate long-term in this manner, but I know mine reacted that way before I saw the small flow arrow stamped into the side of the brass body. The valve does get pretty warm when actuated, but not extremely hot. Reports are that the valve is not designed to stay actuated for more than 8 hours at a time, and the solenoid may burn out if regularly operated for longer periods of time (this is because the solenoid coil has to remain energized to hold the valve open). Overall, I recommend this product.UPDATE:After 6 weeks of operation on a daily basis, the solenoid valve is still operating well. Cold, well-water running thru the valve. Solenoid is hot while in "open" mode, but not burning hot, and you can still grab it and hold it for a while without burning your hand. If hot water were running thru it, I don't think I could expect a long operating life before burning out the solenoid, because of the specific way/application I am using it.

I installed this valve inline on my 1” natural gas line, between the meter and interior distribution manifold, along with both a shutoff valve and a bypass valve (for use when needed). It operates flawlessly during routine testing. During normal operation there is no reduction in gas pressure or impact on appliance performance. The valve is hardwired for automatic closure when triggered by my natural gas sensors. All fittings sealed perfectly with no leaks on the first attempt / installation. FIVE STARS

I had to solder on to the wires in order to get a decent length cable. The default cable length is too short, especially given the fact that this device is not grounded and if you got any water leaks/splashes the cable would be right in rangeThat aside, the only other thing of note is that these use the NPT threading so if you want to use a hose you should get adapters. I also needed to use teflon tape to in order to get rid of most of the leaks. I have a very very very slow drip on the intake side. I wasn't able to get rid of it all but its so small that for my usage its fine.This is a nice solid device

Good functional unit but the 8 hour continuous use limit is a drawback for me.

i'm writing this for my husband pete, who ordered the valves. he said they're just what he needed for the project. his only negative comment was about "the always closed when de-energized" configuration. Apparently he wanted the opposite but didn't think it was an option, (it was installed in a small space heat build up might be a concern) and did not see any like that. so far he is quite satisfied.

I have a water tank on the roof of my building. I installed this little guy on the pipe, and fit a gallon plastic jug around it to protect it from the elements.I ran a wire downstairs, installed it with a timer switch, and was done.It works perfectly. I honestly couldn't ask for anything more.Since I only activate it for a minute or so, I imagine it will pretty much last forever.Edit: Worked absolutely perfectly for two days - then quit working. I'm on the fence if I'm going to buy another one.

Las válvulas se descomponen muy rápido y no retienen el agua

In an effort to water my garden automatically I first tried a couple of those off the shelf, battery operated garden sprinkler units. Unfortunately, I've had nothing but problems with them: leaky and never last more than two seasons. I found this unit while looking for a more robust solution and I am very happy with it so far. Since I already had an outdoor Kasa WiFi plug nearby it only took a few minutes to get it connected and automated with Home Assistant. The valve does get a little warm but I'm only using it for 30 minutes at a time, so fingers crossed.This is my own fault, but I did not realize that National Pipe Tapered (NPT) is different than Garden Hose Thread (GHT). This will not work with your standard 3/4" GHT garden hose connections and you'll need a couple of 3/4" GHT - NPT adapters, these should do it https://www.amazon.com/gp/product/B09336JH6L.I'll update this review if/when I have any problems.