Does a washing machine need hammer arrestor?

The general rule is that water hammer arrestors are required on all quick closing valves. But since as the engineer you have no control over the type of hoses used as the washer supply, you would be foolish not to install water hammer arrestors.

Where should a water hammer arrestor be installed?

Exactly where to place the hammer arrestor will depend on the actual piping arrangement. The best places are either close to the pump, isolation or check valve that is originating the hammer, or at more distant points where the pipe changes direction, for example at the top of a pump riser.

What is a washer water hammer arrestor?

Water hammer arresters are simple devices that install within the water line to a specific fixture or appliance. Arresters absorb the shock wave created by a sudden stoppage of the water flow. Installing a water arrester on each line supplying the offending fixture (or fixtures) usually solves the problem.

How do I stop my washing machine from water hammering?

If an arrester doesn’t eliminate the water hammer, reduce peak flow by partially closing the water-supply valves. The washer will fill more slowly but it will still fill to the right water level. If that doesn’t work, consider a larger arrester or pressure reducing valves. (Hire a plumber to install those.)

Why do I need a water hammer arrestor?

Install water hammer arrestors to prevent clanking pipes When a valve closes quickly and stops the flow, that momentum shakes and pounds pipes. A water hammer arrestor cures this condition with a cushion of air that absorbs the momentum.

Do water hammer arrestors fail?

Piston-type water hammer arrestors are mechanical devices and are prone to failure without notice. Replacement intervals are impossible to predict due to variety of factors.

When would you use a water hammer arrestor?

Water hammer arrestors are used to absorb the shock when water flowing in a piping system suddenly stops due to fast closing shutoff valves, dishwashers, and clothes washers. This action protects against annoying and potentially damaging effects of water hammer.

How do I stop washing machine pipes from banging?

If loose pipes are turning mild shock waves into loud bangs, you can prevent it by securing pipe straps, adding new pipe straps or tightening studs or joists.