li>Installs and repairs plumbing fixtures, equipment and plumbing systems such as sinks, commodes, bathtubs, showers, water heaters, hot water tanks, garbage disposal units, dishwashers, cooking kettles, disposals, drainage systems, grease traps, water softeners, water coolers, air conditioners and others as required. Installs, modifies, maintains, and repairs new and existing high temperature water and high-pressure piping systems and equipment, such as steam heating, steam generating, flash and expansion tanks, condensate vacuum, and circulating pumps and radiators.