Sioux Chief 652-A Water Arrestor

Used these to replace the old type AAA Water hammer arresters. They stopped the water hammer at the wash machine that was going throughout the house. We needed the extra volume to compensate and eliminate the hammer effect. Well made. The piston works well and should last a long time. A good value for the money. It took numerous fittings to replace the old setup. But one of the previous reviewers showed a good way of accomplishing this and he had pictures.

Sometimes people use the 1/2" models near the fixture in question. I prefer a couple large 1" models as a central arrester. The Sioux Chief models are my go too. They last a long time - but nothing lasts forever! I prefer to put these behind access plates so they can be replaced. Just a word of personal advice.Will buy again.

I don't usually write product reviews. But, I am very impressed by these water hammer arrestors. When our sprinkler valves would shut off, the line between the kitchen sink and the ice maker in the fridge would rattle with some fury. The sprinkler valves are a long distance from the kitchen and I was worried about the potential for pipe damage. As our copper pipes are in the slab, a leak would be a pain to fix.Installing the 652-As took just a few minutes as I already had pipe Ts in the lines. I installed one in the front yard near the sprinkler valves and one in the back yard next to a sprinkler valve.After installing the 652-As, our water hammer issue completely disappeared and our pipes are silent when the sprinkler valves close. Only thing I regret is not installing these years ago.

The Sioux Chief 652-A Water Arrestor does work as described.However I noted a problem. The threads on the ones I received were a bit chewed up.That made screwing them into the T fitting a bit hard, especially with the needed pipe tape.You really need a properly sized wrench to screw them in. The fitting is copper and will round over extremely easily if you slip.The fitting is 1/2" NPT male. Fits into a 1/2" NPT female T.Other then that, its working on my water panel in my darkroom. Before it had a lot of minor water hammer due to the solenoids opening and closing (it does that to adjust the water temperature). Dozens of times per minute.After installation, it’s a lot quieter and I don't notice any water hammer anymore.Hopefully these will last a number of years. Generally ive gotten 3-5 years for the ones on my washing machine before the internal spring snaps or the bladder leaks the air cushion.I can definitely recommend this for dealing with water hammer issues.

I’ve been using Sioux Chief Mini-resters (model 660-H) to handle my washing machine water hammer. They work OK…but only seem to last 18-24 months. I wanted a longer lasting solution so I can stop replacing the Mini-resters.Inspired by another Amazon review (house guy), I built my own hammer arresters using these larger Sioux Chief 652-A units. My solution requires soldering…so this idea won’t be for everyone. But if you can solder and are replacing an existing set of Sioux Chief Mini-resters, check out how I built a larger version (see images). The part numbers are in the images. You have to un-solder the copper portion from the 660-H mini-resters to re-use them. Don’t cut it off because you will need the entire length of that copper section. Then assemble the new arrestors as shown. These are working well and I hope they will outlast the Mini-resters by a long time. If/when they stop working, I can just replace the 652-A air chambers instead of replacing the entire Mini-rester.

the size is small before ordering make sure check the size. return you have to pay the return shipping. seller not very helpful.

Product works very well. I had tried MiniRestors with AA size pistons, but they did not manage our water hammer issues. They helped some, but we still had a decent hammer. We decided to go up to the "A" size to fix the problem. However, I didn't have access to the pipes without demo of wall, and the "A" size piston will not fit the MiniRester fitting. Fortunately, it is pretty easy to build your own fitting... Here are the pieces - two of each for the two water lines... Worked well for us.Brass 1/2 inch FIP TeeBrass Elbow 3/4 inch MH X 3/4 inch FHBrass Adapter 3/4 inch MH X 1/2 inch MIPBrass Adapter 3/4 inch FH X 1/2 inch MIP

I bought two of the Sioux water arrestors and installed them at the water shut off valves for our washing machine. They substantially improved the banging of our waterlines. Not complete elimination but a good improvement.Due to a leak at one of the hose connections (which had nothing to do with the arrestors) I had to remove both of them. This was after about a month of use. Upon inspection I noticed that the piston in one of the arrestors was all the way to the back of the cylinder. I tried to bring it forward but no dice. At that point I cut the arrestor apart. The plastic cup/piston was stuck in the back. Likely a seal was leaking and the air behind the piston escaped at which point the arrestor becomes useless.Very disappointed. Just a bit more than 30 days of use. Would not buy again.