A while ago the old washing machine gave out and was replaced. The replacement works well enough, but the valves in it shut off hard and fast. The result was that water flowing in the pipes suddenly had nowhere to flow to and there was a “water hammer.” This was not only loud enough to be noticed, but was subjecting the plumbing to shock.
Looking into things, there are “water hammer arrestors” that give the flowing water something to work against that has at least some ‘give’. A pair of the piston (rather than air bubble) type was purchased, and Sunday morning (after or just before a hardware store opened – just in case a visit would be needed) these were finally installed. Also confirmed that the hoses had been replaced with the good reinforced sort – if they had not been, that would’ve been a hardware store trip or such.
The installation itself was easy. Getting access to things was another matter. A small out-of-the-way cubby for a stacked washer & dryer might look nice, but it’s a pain to work in. Especially when the dryer’s power cord is only almost long enough when things are out far enough to do anything. The power was shut off at the breaker while things were worked out for that – mixing 240 V and even a little water? No.
But it did all get done, put back, and a load of towels (with a few left out nearby, just in case) run. No banging. No leaking. Huzzah. Double checked that the dryer vent hose remained connected (mirror on a telescoping stalk made this easier. Breaker switched back on. And while I can hear the washing machine, I hear the motor run (or the drum spin) and the water flow.