When it comes to plumbing parts, identifying parts, and cataloging, my family has a long rich history. The way my grandfather identified and cataloged parts 70 years ago, still affects the way we do things today. 1953: Lauren D Walter compiled and published the first “Plumber’s Index to Concealed Tub and Shower Valves.” At that time, he was working for H.E. Holzemer Company in Los Angeles, but it was several years earlier, when working the counter for Hirsch Pipe and Supply, that he recognized the need to help the plumbing professional identify the shower stems that needed to be replaced.
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