HFS(R) Electric Solenoid Valve Copper Normally Closed for Water Air Gas (12V DC 1IN NPT)

Works well for air horn

I had to use a filter before this valve otherwise it will hang up on you and you have to take apart and clean.

Used on a camper to dump grey water without getting under Van or getting wet. Love it, very heavy duty!Update 1 yr later... had a problem of leaking when shut off. Took valve apart(1 nut) diaphragm was full of debris from camper poly tank installation debris. Cleaned the diaphragm and all perfect again. Hint: don't buy a new one like I did before performing some easy maintenance.

(12V 3/4 NPT version) I used on my home cold water supply line (so ~60PSI). It works as intended and is overall a pretty simple design. Rubber diaphragm attached to a metal rod that is electromagnetically pulled in and out. The rubber (which looks like Buna or EPDM) is very likely going to be a weak point that goes bad after several years and can't really be replaced since it's crimped to the metal actuation piece.Problems: this thing gets hot. Really hot. I measured 170F after a while. So hot you can in the entire room smell the magnet coil wiring off-gassing. Solenoids like this get hot because it's part of how electromagnets behave. However, I would bet that this causes premature failure on the voltage regulator that is probably built in because there's no real heatsinking outside of the smooth metal case. I *highly* recommend you install a fan to blow air on this if you plan on having it run for extended periods of time.I keep all my reviews updated so if there's no "EDIT's" here then assume it's still working fine for me.EDIT: looks like they use mild steel springs in these things....so they rust and want to bind up. Don't leave this thing 24/7 in the "on" position or you won't be able to shut it off.

Bought this to replace an air horn solenoid that stopped working. I'm also going to replace my regulator, it seems to drift 40 psi from how I set it. I'm like it at 60 psi, it drifts down to 40 psi and my horn sounds horrible. When it drifts up to 80 the solenoid won't open. This solenoid opens at much higher psi so a wondering regulator isn't a problem. Eventually I'll get around to replacing the regulator but until then this is a great solenoid

Carb replaced twice before adding this device. I would have forgotten to turn off the fuel and if the B&S engine would suck the gas tank. I'm not a fan of that carb design but this device eases the pain.

Good

This is the third one I have installed to replace a manual fuel shutoff valve. One on a Farm tractor and two on riding mowers. It's nice not to wake up in the middle of the night and wonder if I forgot to turn off the gas. Very low price for all that peace of mind..

If on for long time gets too hot but working so far

Entrega muy rápido y sin problema

Muy buena calidad compré dos para mi suspensión del VW Llegaron en tiempo y excelentes condiciones

Es de muy buen material, resistente a presión de aire, la uso en untanque de aire para una corneta, funciona excelente.

Déçu de cet achat, la valve n'est pas 100% étanche ni à l'air ni à l'eau