Kerick ValveMA252 PVC Mini Float Valve, Tank Mount, Adjustable Arm, 1.5 gpm at 60 psi, 1/4" Tube

I used this for a float valve inside a tank I made for a humidifier. Connected a 1/4" OD pex waterline to it. Been a few months now, everything has operated smoothly. I did have to add some hardware to make it work. But it wasn't anything complicated, just a washer and a rubber washer from the hardware store.

I use this directly on a Lowe's 2 gallon bucket along with chicken nipple waterer (threaded style oasis poultry water nipples) to function as an automatic waterer. It works perfectly to stop any water overflow and I like the adjustable arm to modify the water level as needed. My initial shipped valve was missing the compression nut ferrule to allow for 1/4 tubing to stay on water-tight, so you may want to check for any missing part as soon as you get the valve. I control the water refill time at the spigot with a digital water timer (Orbit 91213), so I can't attest to how the product would fare in the long-run under constant water pressure, and this will probably be dependent upon your incoming water pressure. Our water main (location where water enters house) psi is set at 75 (was initially at 50 psi), and the float valve works just fine to stop any water overflow whenever I've tested. I avoid having water hose left under pressure since I've lost a few of our garden hoses that way (especially after we increased to 75 psi to improve shower) along with costly water waste. I would personally not risk such failure especially for indoors, so check your psi and use a timer if possible or at very least use a pressure regulator and/or partially open your spigot valve to lower water pressure. I use all three measures - pressure regulator, timer, and float value. It's better to be safe than sorry.

I'll give 5 stars on this even though my first unit was defective. Amazon promptly issued a replacement and now I'm happy.I'm using this to direct-plumb a Keurig K550/K560 with RO-filtered water. Here are the things I like about this valve:- small enough to fit into the reservoir, despite the odd shape of the new Keurig 2.0 units- accurate and predictable shutoff every time- works even though the water pressure coming in from the RO valve is lighter than a typical water line- Inlet compression connection does not leak- US-made, NSF-certified PVC. If you're going to make sure your tube and fittings are all food-grade, and you're using RO water, then you may as well insist on this for ANYTHING making contact with your water- adjustable enough so that putting it inside this oddly-shaped Keurig 2.0 reservoir workedIt was super simple to change this into a top-mount option... the angle it ships in is suitable for side mounting. Just remove the nut, bend the float arm at the joint in the direction needed, and replace the nut. Quite a hassle to get this at precisely the right angle for the Keurig 2.0 brewer, but in the end, I managed to secure it so that the float could drop and rise without contacting the sides of the reservoir. I needed to make the outlet portion flush with the top of the lid, but the lid is not flat; it's contoured. This means the outlet sticks up not at a 90-degree angle from the lid/top, and you'll need to secure the nut differently. This was more a function of the Keurig than the float valve, so no complaints about this device.How could this be better? If you could rotate the outlet 90 degrees relative to the axis of motion of the float arm/float; but that's again because of the odd-shaped reservoirs on the K550/K560. If this option were available, I could have rear or side-mounted the valve instead of top-mounting it. This is because the sides of this reservoir are heavily curved and contoured, so a strange angle would be needed between the float arm/float and the outlet.

This is a perfect fit for top-mounting to the lid of the Keurig 2.0. Thanks to the superb review by Yousif A. Hassan I made my purchase as soon as I was done reading the review. My goal was to accomplish the same thing and Yousif's review was the closest thing to a walk through that anyone has posted for the Keurig 2.0. It also saved me from attempting to mount it from the back of the tank which would have left me with a really ugly tank and a non-functioning float valve (the angle you'd have to mount it at would prevent the valve from moving).All that said, installation was simple. Drill a hole in the reservoir lid toward the back. Flip the plastic floating piece around the other direction. When mounting make sure the floating piece is not too far to the left or it will rest on the indented part of the reservoir. Also, line it up so when the water rises the floating piece will rest between the two arms for the flip-up part of the reservoir lid.All in all I'm very pleased with the quality of this valve. It's quiet and by the time your cup of coffee is done brewing the tank is already full again. Exactly what I was hoping for!Update:I've had this valve for one day and it's already flooded (and ruined) my coffee cabinet from a slow leak/slightly open valve. Make sure you use a marker and mark your water level when the valve appears to shut. You may be surprised to see the water level continuing to rise. If my replacement does the same thing this is going straight to the trash. Be careful. This happened even though the floating piece is free from hitting anything that would keep the valve open. Very disappointed.Update 2:The replacement valve does the exact same thing. Slow drips after the valve has appeared to have closed. The tank will continue filling slowly and quietly which is dangerous if you are trusting that the water has actually stopped flowing into your tank. I marked my tank with a pen to see where the "stop" point was and within minutes the tank was above the max fill line. This happened regardless of how I positioned the float arm.Update 3:I've since moved to a new house and still had one of these in a drawer. I decided to give it another shot since the plumbing at this house is actually reliable and well-built. My water pressure at the last place was high, around 90 PSI or so (bad PRV), and that kept the valve from closing as it should even though it's rated for 100 PSI. This new house has much lower, reasonable PSI, and I was thrilled to find that where I set the arm to stop...it actually stops.I've changed my rating to a 4. It'd be a 5 if the product details were more accurate. Bottom line: if you have high water pressure (and can't easily alleviate that) don't get this or you'll end up with a slow flooding mess. If you have reasonable/low water pressure, this is hard to beat.

Part was a very good replacement for 50 year old humidifier

Make sure of exact fitment