Easy fix for water hammer

Once again it's time to empty the question bag. Today it's a bit of a hodgepodge. Water and electricity usually don't go together, but today is the exception.

Q: We must have air in our plumbing pipes, because every time we turn them on and then shut them off there is a big bang. After searching online for "air in pipes," I have discovered that we have a water hammer problem. The loud noise occurs only when we shut off any sink, or the dishwasher stops. Do you have simple, easy-to-follow instructions on how to get rid of the water hammer?

A: Maybe. Water hammer is hydraulic shock. It's the sudden increase in water pressure in the pipes when there is a change in the direction or velocity of the water.

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