The new American National Standards Institute (ANSI) standard governing flammable vapor ignition resistant (FVIR) water heaters has been in effect for less than a year, and plumbers around the country are still adjusting to the subtle differences found in the installation and maintenance of the units.

Proponents of air admittance valves want them added to the UPC code, but they face resistance from those who remain unconvinced.

One product in the plumber's toolbox that is used practically everyday and probably taken for granted is soldering flux. First introduced over 100 years ago, flux technology has seen rapid changes and improvements in the past several years. Let's examine the various types of flux currently on the market, and look at how to more effectively use this essential product.

This is the third and final part on drain and sewer cleaning safety