Originally Posted by Vincenzo Corleone
I bought a water hammer arrestor made by a company called Sioux Chief. I'm seeking advice from people who have also used water hammer arrestors.
I'm using it between a stop valve and a dishwasher inlet valve to prevent water hammer from damaging the inlet valve. Would it be better to install it at the stop valve, or further downstream at the dishwasher inlet valve?
I have a Sioux Chief Mini-Restor installed behind our clothes washing machine, on its cold water inlet line. Previously, when the washing machine's cold water inlet valve would shut off, we would hear a "thump!" from the kitchen sink plumbing. The kitchen sink is about 50 feet downstream from the clothes washer.
The Mini-Restor I installed has a female hose thread inlet, and presents a male hose thread outlet, which is 90 degrees from the inlet. I just unscrewed the washer's cold inlet hose from the manual shut-off valve, screwed the Mini-Restor onto the valve, then screwed the washer's cold inlet hose onto the Mini-Restor's outlet. Very simple, and effective. Having the Mini-Restor about 3 feet from the source of the hammer, the rapidly closing cold fill valve, did not seem to reduce it's effectiveness.
I realize my application is a bit different than yours - I was stopping the surge at the source, where you are trying to stop the surge at the far end, the receiving end. I would think anywhere along the path has to help, as it is the squidgy accumulator effect that absorbs the surge of the relatively incompressible water.