I need to repair a leaking shower head, but what is the proper way to purge the water pipes after shut off? I have galvanized pipes and harsh city water, so I normally have another clogged shower once I open the water lines. It's usually the calcium that will clog the seat and spring's.

I usually disconnect the cold/hot hoses from one of the sinks and let the water run. Just wondering is there is another option.

bout all you can do. take the aerators off of the outlets and let it run, hope for the best.