Water Hammer Device for Washing Machine or Dishwasher

Needed a new washing machine and the Samsung was on a good deal. Sadly, from the moment we connected it, we had horrible water hammer we could hear all round the house.I came across this product while searching for solutions and, despite some reviews saying it hadn't worked, or didn't cure the problem entirely, as the water hammer was so bad, I thought any improvement would help.The package arrived in good time and i was eager to know if it worked.The instructions say to attach it to the back of the washing machine. I did so, and in a few minutes it was connected. However, I discovered the product was too deep to allow the washing machine to be pushed back adequately into the recess.I removed the product very easily and installed it on the other end of the supply pipe. Within ten minutes, i had attached it, checked for leaks and had pushed back the machine in place.Turning the machine on i was pleasantly surprised to hear no water hammer at all. Nothing. It was entirely cured.I can only recommend this to anyone having problems with water hammer.

This item was delivered within 24 hours after ordering. Came in a sealed pack.I recently had my brand new all-singing, all-dancing Samsung washing machine delivered and fitted. However, from the first wash, the water hammer situation was dreadful - it was so LOUD!I ordered this arrester and was so glad about the speedy delivery. Instructions could have been better but, as I can do my own plumbing, it took this girl less than 10 minutes to fit.I struggled a tad with undoing the water inlet hose connector from the washing machine but, once loosened, the rest was easy-peasy. No more water hammer - just the gentle sound of clothes tumbling and washing.No need to call a plumber for this! Simply do the following:1. Have at the ready:- Spanner (just in case)- PTFE Tape- Arrester- Dry cloth- An empty vessel2. Turn off the water to the washing machine/stopcock (remember how many times you turned it as you'll need to turn it back on the same number of turns)3. Put the empty vessel on the floor under the hose and disconnect the water inlet hose from the washing machine. Place the end of the hose in the empty vessel (for drainage)4. Wipe away any wet areas5. Wind clockwise the PTFE tape around the washing machine connector about 3-4 times6. Screw on the arrester to the washing machine connector and tighten7. Then, connect the water inlet hose to the arrester and hand tighten (no need to use the tape on this as the inlet hose should have a seal inside it to prevent leaks. If not, wind the PTFE tape around the arrester like before and tighten the inlet hose to it8. Turn water back on and check for leaks9. If any leaks, repeat processQuiet washing times ahead!

I had a bit of water hammer noise when the washing machine switches off its water. This device reduced the hammer noise a bit, but not completely. I think I need to clip down one section of pipe upstairs where the hammer noise can still be heard. It was very easy to fit between the washing machine hose and the tap - a 2 minute job with no skill needed. I used a 3/4" or 27mmm spanner to make sure the fitting is tight. My advice is to make sure that all cold water pipework is clipped down, particularly where the knock noise comes from, otherwise this device cannot be expected to completely eliminate pipe hammer.

Previous unit lasted well (couple of years) before it finally gave up and the water hammer returned. Unfortunately this one only lasted less around six months or so before the hammer returned gradually.It’s a shame there is no option to “maintain” these (eg removing, unscrewing the tube, draining water from the spring side, relubricating seals etc) as it’s annoying to buy them them, they fail and you just have to throw them away.So the time these last seem variable (even in the same application/use).

We had knocking throughout the cold water system: it had been a real nuisance when the tumble-drier was operating, but could also be heard when kitchen tap and shower were cycled. However, fitting to the back of the drier cut down knocking throughout the system-didn’t eliminate completely, but greatly reduced the knocking. Recommended, good value

This works great. Before fitting this it sounded like somebody was hitting my pipes with a hammer and something was about to break. Just screwed this into the back of the washing machine. ( Careful not to cross the threads as it's copper fitting will cut new ones on the nylon of the machine ) Then, like they used to say in the adverts, "The banging was gone" ( or was that the dirt? ). It does stick out a little from the back of the machine but I have standard machine and counters and it fits fine.Although it looks a little rough it is very well built. The mating surfaces for the washers to seal on are good and flat so it makes a great seal.It says it can be fitted in any direction and I put mine sideways so it fits under the counter and it works fine.

It did not work at all. Was going to return it but then did not bother to take all the troubles. I also had a mini expansion vessel installed recently free of charge by my boiler installer but it did work either.Loose pipes/manifolds (and worn faucet washers as suggested by the installer of my mini expansion vessel) can cause pipe shaking even if an water hammer arrestor is present, as loose parts only need a small shock wave to rattle. Internal leaking or incorrect pre-charge of these shock wave arrestors can also render them useless.