Markup vs. profit margin April 9, 2013 Richard DiToma Vito, a plumbing contractor from New York, writes, “I would like an explanation of gross profit. Why is it always...Read More
Understanding Backwater Valves January 1, 2012 The first rule of plumbing is “sewage flows downhill.” When sewage is not following the rules, you’re going to need...Read More
What are safe hot water temperatures? March 14, 2009 Ron George I am often asked, “What is a safe hot water temperature for domestic hot water?” If you read the model...Read More
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