Soux Chief Sioux Chief 653-B NLC 3/4 Inch Water Hammer Arrester

Works exactly as described. I installed these using a combination of fittings on the back of our washing machine and it completely eliminated the water hammering from our Kenmore washer. The water lines don't even so much as move anymore.

A client of mine started getting BAD water hammer after I installed new sprinkler valves. It was so bad it would wake them up at 4:00 AM when the sprinklers turned on/off. I installed this on the pressurized pipe just before the valve manifold and it worked like a charm. The valves open and close silently now, and my client is happy.

This is what I needed. I initially tried one meant for a washing machine on my outside faucet timer. It did not work. I upgraded to this and no noise at all. As others have said, you will need an adapter because the arrestor is pipe threaded.

I had a the banging of the pipes every time my irrigation system would turn on or off. I had serveral plumbers come by with no resolution. So you Plumbers, take heed and have these in your arsenal for knock repair. It works if you place it near the offending device. In my case I easily installed it on the irrigation valve myself and the banging went away. I did have to purchase a PVC cutting tool from my local box store along with a piece of PVC and sealant. But once done, I resolved a problem I had since I purchased the house 4 years ago. Only problem, I have to replace annually it appears due to hard water in desert. But it easy to install now that I have it set up and it’s not expensive..

After o stalling a pressure regulator valve, started getting loud pressure oscillations when the flow went up quickly. This thing solved the problem. Many people use them to eliminate water hammer caused by a washing machine. Be aware, this thing has parts that will wear out. I expect to replace mine in about 10 years.

Hammering has STOPPED on Washer On & OffI’ve always had a loud bang when the Washer is running. As you can see from the picture, my house is older so the connections are in the basement and somewhat rudimentary.Smaller Hammer Arresters did not stop the hammering on my washer so I tried these larger ones. I hooked it up slightly different than another buyer, in that I bought a 3/4” garden hose threaded tee (2 female, 1 male):https://www.amazon.com/dp/B0D21SJJ6J?ref=ppx_yo2ov_dt_b_fed_asin_title&th=1and thus only needed one adapter for each cold & hot water lines:https://www.amazon.com/dp/B0BWSY2ZM7?ref=ppx_yo2ov_dt_b_fed_asin_title&th=1The arrester appears to have pipe threads but did seem to fit directly in the garden hose threaded tee without the garden hose to pipe thread adapter, but I tested it and it sprayed water, so the arrester definitely has pipe threads and requires the adapter.Once connected and running, there is still some faint knocking while the water is running (probably a different issue) but the loud thud/bang when the water shuts off is now non-existent.I would unquestionably buy these again if needed.

just installed lawn sprinkler system. All is well but the water hammer at each and every zone shutoff time driving me crazy. no matter how to secure pipes, etc no help.found this one, 3/4in with 3/4 in pex tee and installed at the position right after the water valve in the basement where goes to the sprinkler system outside underground. amazing thing happened, no nosie, no more water hammer noise any more. wow, great.so anyone want to get rid of the annoying and dangerous water hammer, do it and you will be so relieved by the result.

Like others have said, the threads will likely be damaged. They really should have a plastic cover over them during manufacturing to protect them from damage as they are likely tossed in a bin before being boxed up. As it was, it leaked the first time, so I had to take it apart and file on the threads a bit to smooth them out.As for the hammering, it has helped, but not eliminated it. I still get one or two hits before it kicks in, but it is better than before.Other issue is that it says one day shipping, but it was two days for me, which seems to be an issue with a lot of Prime products any more. Tell me up front it will be two (or three) rather than suckering me into ordering it because you claim it will be next day.