Really well made and solid back flow preventer. Most people never think about these until one goes bad. Certainly, having a good back flow preventer is good working condition is important especially if you have a sprinkler or irrigation system - you don't want any nasty chemicals getting siphoned into your drinking water. A bad backflow preventer can also contribute to well pump short cycling reducing the life of your well pump. The heavy cast bronze body along with EPDM seals and stainless-steel springs should guarantee a long life. Very well made.

Solidly constructed with a bronze cast body, machined FIP threads and union equipped for access to working parts. Dual check design for positive stopping of reverse flow and straight through design to minimize pressure loss which for the typical household application is probably no more than 3 psi. My intended use is for mounting in the suction line of a well pump, which aged piping needs replaced, to maintain system pressure during the off-cycle of pump operation

I am in the middle of repairing several stores backflow preventors - These are required to be tested and validated as good by each city. I took precautions further and added these to smaller lines to have a backflow in other locations as well. This unit works exceptionally well. I found that at mop sinks this can be a lifesaver due to employees not doing their part. I found these to be invaluable.

Like all other sharkbite plumbing parts, this one passes with flying colors. Only problem with sharkbite is they are expensive. This part is heavy duty, well made, & should last a lifetime. Installation is easy. Pex tubing & copper tubing fit right in one side & its snug & secure. No leaks. The other side is threaded for threaded pipe. This adapter makes it easy to convert.

Happy that Home Depot sells professional products like this one. In the past I tried to buy items like this from a plumbing supply, only to be looked at like a bug on a cookie.

Worked great with no lost of water pressure.

Appears well made. Installed easily

This backflow preventer seems to be well made and it works very well. It is brass on the outside and has valves with rubber seals on the inside. It has two separate spring loaded valves on the inside with rubber seals between them. It held 35 psi back pressure with no leakage when I tested it. I don't know if you can buy the valves separate, but if you can, you could replace just the valves, as the whole thing will come apart. I am not super fond of plastic valves, but they seem to work. The inlet is what they call 1 1/4" Meter Swivel Nut, it has female threads that measure 1.53" with a rubber gasket. The outlet is a 1" Female Shark Bite Fitting. They do include a Shark Bite release tool so you can take the Shark Bite fitting apart if needed. I like the Shark Bite fittings as just push together to connect. The opening in the plastic check valve is about .75". The valve is about 6 3/4" long and about 2 1/8" in diameter at the nut. All in all a nicely built backflow valve

This backflow preventer seems to be well made and it works very well. It is brass on the outside and has plastic valves with rubber seals on the inside. It has two separate spring loaded valves on the inside with rubber seals between them. It held 35 psi backpressure with no leakage when I tested it. I don't know if you can buy the valves separate, but if you can, you could replace just the valves. I am not super fond of plastic valves, but they seem to work. Both the inlet and outlet are Female National Pipe Thread. The valve is about 4 1/2" long and about 2" in diameter at the nut. All in all a nicely built backflow valve

First impressions its heavy and heavy usually makes you feel comfortable like it's good quality, the body of the check valve is solid brass construction, threaded ends are done well and sealing surfaces are machined well, it has a nylon seal and a nylon check valve ball, I was surprised it was a nylon ball, I was expecting a stainless steel ball against a nylon sealing surface, I'm sure this will work fine and get the job done as expected though.