Product review (5 stars): stopped water hammer noise
I bought a new LG washer and each time the water valve on the washer closed it would send shock waves through the laundry pipes and on through to the refrigerator water line....very loud and annoying. I put a water hammer arrestor on the washer and it solved the washer hammer noise but I was still getting washer related hammer noise at the fridge (although it was about 40% of the original noise). I put this water hammer arrestor on the ice maker water line and the noise went away. The arrestor attached to the end of the ice-maker water line hose. I then put a short 1 foot ice-maker hose on the other end of the arrestor and that attached to the refrigerator line. Very simple installation...