John Guest USA, celebrating its 25th anniversary this year, produces a variety of different fittings for the residential and light-commercial plumbing markets and the water-filtration market. Speedfit fittings are used in hot/cold water services, hydronic heating systems and radiant in-floor heating systems, while its line of push-in fittings, valves and tubing is supplied to the water purification-treatment market for potable water and other fluid applications in homes and restaurants.

John Guest USA. www.johnguest.com. Circle 30