Boltigen 1 inch Spring Check Valve, 304 Stainless Steel CF8 Non Return One Way Horizontal Check Valve, Vertical Inline Water Check Valve for Well, Pump, Tank, Backflow Prevention, WOG 1000

These check valves are great. I put a pressure booster on our incoming well line and have one of these on the line going to the outdoor hose bibs which comes off before water softener so we can water plants and one after water softener that supplies the inside of the house. By doing this if we have a hose bib open it doesn't detract from the pressure inside. As far as fit & function, these work great and actually are small enough to fit in with all the piping.

I ended up returning this because I accidentally bought it and needed the half inch instead. That being said I installed the half inch which is identical besides the width and it works great. I'm using it to bypass an old spring and ball check valve on a 130 PSI 20 gallon compressor!

I bought this check valve because I was installing a carbonated water tap in my home. I installed this and still the water to my whole home ended up being carbonated (shower, toilet, etc.). Turns out you need a special check valve for carbonated water systems. This item otherwise seemed like a good product. It just wasn't what I needed.

Check valve leaked after installation. Item was defective. Return window was closed. Read other reviews as well.

Such a simple concept but I've tried several that don't work. This one does. I have a small water pump with a pressurized tank that doesn't have a backflow prevention valve, so as soon as the pressure tank reaches pressure and the pump turns off, all of the water is forced back out through the inlet and the pump would turn on again for a nonstop cyclical process. This was a very cheap solution to totally prevent that from happening as nothing can flow back out through the inlet.

I am installing this check valve as part of a yard faucet (in-ground installation), to keep hose water from returning to the water line when the line pressure fluctuates and the hose is turned off at the nozzle. From pushing on the moving parts, I feel this check valve will last long underground and not leak through.

Found to be as offered. Installed easily, after 3 month this works well.

This works good when it works right. often the valve doesn't seal (1 in 10 times)so all the pressure leaks out of our pressure tank and the pump has to turn on to refill it again. I have tried the valve in vertical and horizontal positions and find it works best in the vertical position. The valve is spring loaded so it engages quickly limiting water hammer. I can't figure why it doesn't always seal like it should.