Fixtures & Water HeatersQuestion 219 of 360
Water hammer arrestors are installed on a water distribution system primarily to:
a.prevent backflow
b.absorb the shock of quick-closing valves and reduce pipe noise and damage
c.raise system pressure
d.filter sediment
Explanation
Quick-closing valves, such as those on clothes washers and dishwashers, cause a pressure surge (water hammer) that bangs pipes and can loosen joints. Water hammer arrestors provide a cushion of air or a piston to absorb that shock. They are installed near the quick-closing valve they protect.
Law Reference: 2022 California Plumbing Code (CPC) §609.10Practice all 360 questions free — no signup required.
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