U.S. Solid 1/2" NPT Brass Electric Solenoid Valve 12V DC Normally Closed VITON

I am using this as a on-off valve on a agricultural sprayer and it performs well so far, Construction seems very solid indeed. Coming from the industrial automation world, the price is incredible, probably 10% of what I would have expected to pay for a similar device from my normal industrial supply sources.A word of caution to those not familiar with electronic circuits. The solenoid DC resistance measures 7.35 Ohms and therefore draws around 1.74 amps. When you turn the solenoid off, the magnetic field will collapse and create a reverse polarity of a voltage necessary to instantaneously maintain 1.74 amps. Without some alternate path, the field collapse will generate enough voltage to arc across switch and relay contacts and quickly degrade/destroy them. Do yourself a favor and put a 1N5404 or similar diode on parallel with the solenoid, cathode to the + lead and anode to the - lead. In this way when the field collapses, the current pulse will have a path through the diode and protect your switching equipment.

I used this on my external diesel fuel tank on the back of my pick up truck 2017 F250 6.7L Superduty. I was set up as a gravity feed tank but I wanted to include a pump so I can fill my original truck fuel tank on demand which I did. The issue that I was having is that the 12v diesel pump I had was not stopping the flow pushing from my external tank to my truck's original tank. It will drip down slowly through the weekend as my truck was parked in my driveway. I will come in to my truck on a Monday to a full tank. This is great for some people but my fear was that the flow would not stop someday and it will spill out and make a mess, SO... I installed this diesel fuel solenoid in between my external tank and the pump. I already had a wire going from my 12v to the electric pump and a toggle switch inside my cab. I wired this solenoid directly to my pump so since this solenoid remained closed when off as soon as I turned my pump on this solenoid will open. Works great!! and it stopped the flow completely when off. Very happy.

Great find, saved money getting it here.

Valve will not shut when power is removed. I will trash this valve and try a 12 volt ball valve. I am glad I put a manual ball valve at my transfer tank outlet or my diesel spillage would have been mush worse.

I have used several of these valves and they work great. They are very heavily built and are priced very competitively for the market. The only thing i can complain about is that the valve doesn't include a mount. I was able to remove the mount off my old valve and it bolted right on to this one.

love the ease of use , and how well it is made.

Great value for money. Installed on gravity feed diesel system, which is energized no longer then 30min at a time, and it works great! However, solenoid does get quite hot, so don’t recommend using in applications that require extended energize times.

I used this one and another one (different brand) as a remote controlled valve to drain the gray water tank in my van. The dream is that it would be water tight until i give it power and it would drain the tank (best while I am driving) slowly dispursing the gray water on the road or other place, for maximum convinience.The electronic on/off works exactly as specified. However, they have both been leaky. It could be bad luck (getting two faulty ones), but I took one apart and the mechanism by which it seals the valve is quite delicate and would be lodged open by any particles in the water. Gray water in a van (water that has come from the sink/dishes) has many particles, so I suspect this is the problem. I assume this would work perfectly for use with clean water.