BACOENG Brass Electric Solenoid Valve 3/8" AC110V (NPT, Normally Closed)

After reading the reviews, I took a chance and ordered one of these valves. I'm using this valve under my vanity to recirculate hot water back to the water heater through the cold water line. The function meets my expectations and I think it's a great value for a solid built stainless steel valve.The "problems" described by the other reviewers may be due to the following:Getting hot - I have over 40 years experience in the industry and solenoid valves do get hot. This is as expected. Any coil is going to generate heat when it creates a magnetic field strong enough to hold the plunger open against the spring pressure. This should not shorten the lifetime, it is normal. (Good luck finding a valve of this type that does not get hot when on.)Noise problems - DC (Direct current) valves are much more quiet. This is an AC (Alternating Current) valve and therefore by design, the field expands and collapses 50 times per second. (50 Hz) This creates the vibration that causes the noise. If you want to reduce the noise, you can remove the coil and apply sticky wheel bearing grease on the outer side of the valve stem and then slide the coil back in place. Another trick to try too is to put a thin rubber washer or O-ring on either side of the coil. This should significantly reduce or dampen the noise but there will still be some hum when the coil is energized.DO NOT turn the power "ON" to the coil without the valve stem in the coil! (Or a screwdriver.) That's how you melt the coil windings on AC solenoids. (DC valves don't matter.)NOTE the small arrow and install the valve in the correct orientation of flow. Otherwise the pressure could force the valve open. If installed correctly, the pressure will force the valve closed when de-energized, and further help seat the valve sealing area.Hope this helps. I'm very happy with my valve. A quality Stainless Steel valve for 30 bucks!

It does what it suppose to do well - open the valve when the power is on and remain shut while it's off. However if you put it in your water pipeline you need to consider how you are going to deal with the water hammer effects it brings. In my case I am building an electronically controlled water feeding system to my pool, it works well to turn on and off water, however every time it turns water off, the water hammer triggered just rocked my house. I tried to add a water hammer arrester in the pipeline, which somewhat reduced the effect but it is still quite noticeable. Finally I had to yank this valve out and replace it with a much more expensive slow closing valve which eliminated the water hammer effects completely.

I purchased this solenoid for a fertilizer injection system in my orchard irrigation operation. It worked perfectly for 5 cycles (It is on for 45 minutes every 12 hours or so), then it got stuck closed. Applying power did nothing but heat up the housing. I ended up taking it apart and physically freeing the plunger. It is now working ok (2 cycles later), but my confidence is shaken. It is being fed by a gravity flow hose out of a 250 gal tote containing 4-10-10-0.25%Zn liquid fertilizer. The unit does not appear corroded in the least (I wouldn't expect that with a stainless steel body). Do you have any suggestions?

My previous solenoid failed after 1.5 yrs. It’s on pool equipment outside exposed to elements for an auto fill line. FYI you can just swap the solenoid part out without removing the valve. Next time I’m just see about buying just the solenoid part. Note: the wires going in the unit are not sealed like it appears. It’s just a plastic reducer. Fill it with silicone and it works fine.

I bought one of these, returned it, and got another with same problem. The valve will not shut the flow off. The valve will hold against some pressure, but you turn the valve on it flows, turn the valve off and it keeps flowing, turn off the flow and back on again and the valve holds. NOT WHAT I'M LOOKING FOR IN A VALVE. I NEED ON AND OFF, LIKE A VALVE! Yes the direction of flow is correct. There is a very small hole in the membrane allowing backflow/draining. Sent a message to the vendor expressing the above concerns and I got an email back saying Amazon handles the returns. Let me know if I'm missing something people I aint sharpest tool yuk yuk yuk.

Adquirí varias de estas válvulas de 1/4 para hacerlas funcionar con aire, trabajando por ciclos y tras tres años han funcionado correctamente y no se han dañado .

It works, and the price is right but gets VERY Hot and makes noise sometimes causing me to either have to tap it or unplug/plug back in until the noise stops.Im using mine on a home made co2 system for an aquarium Im setting up, and because it works so well will prob swap it over to one of my smaller tanks when Im done but the heat issue has me a bit paranoid. Dont get why this one get SO hot when my real co2 systems solenoid stays perfectly fine.

The valve opens, but really restricts flow. I put it on the suction side of my sprinkler pump (2") and it restricted the flow of water so much, that the pump would just cavitate, and not build pressure. I tried it for an hour or so, and by the time I unplugged it, it was very hot to the touch.

Luvraison juste a temps