Introduction: Water Hammer

Picture of Water Hammer

The drinking water line had a bang every time the tap was closed quickly. The easy fix is a cushion of air.

A 10” piece of ½” copper pipe was soldered and capped above the shut off valve. When the kitchen tap is suddenly closed, the air space acts like a shock absorber.

Step 1: Replenish the Air

Picture of Replenish the Air

Over time, the air is absorbed into the water and the space needs more. Upstream is the sand filter, which must be replaced every 3 or 4 months. When the new filter is put back in service, opening the drinking tap slowly will purged the air through the line and refill the space.

Step 2:


seamster (author)2014-09-29

Great fix! Thanks for sharing this!

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