Before revision: They can be used in many plumbing applications, including water supply, drainage, sewers, vents, central vacuum systems, compressed air and gas lines, HVAC , sump pump drains, and other locations where plumbing fittings would be used to join sections of pipe.
After revision: They can be used in many plumbing applications, including water supply, drainage, sewers, vents, central vacuum systems, compressed air and gas lines, heating and air conditioning , sump pump drains, and other locations where plumbing fittings would be used to join sections of pipe.