Low energy door operators are ADA compliant devices that operate a door in a manner that is suitable for the elderly and disabled population. They also allow for manual operation of the door without damaging the operator and other door parts. These multi-function door operators are great for all public buildings and businesses.
Founded in 1880 by Lewis C. Norton, Norton Door Check Company began manufacturing and marketing the first practical commercial door closers in Boston. Through long trials designing a door closer that used air pressure, he developed a design that made doors close quietly. Though cumbersome, his first door closers effectively permitted the adjustment of the door's sweep speed. By 1900, he had developed a door closer that used liquid (hydraulic fluid) to help control the movement of the door.
In later years, Norton Door Controls refined the rack and pinion closer and the concept of valve controlled backcheck for hydraulic door closers. Along the way there have been a variety of other innovations, including the introduction of an aluminum alloy closer body, the development of narrow style, non-handed closers, adjustable backcheck, speed adjustments and special application arms to make just about any special installation possible.
QualifiedHardware.com carries an extensive inventory of Norton door closers including the 1600 Series, 7500 Series, 8300/8500 Series and the 9300 Series. Replacement arms as well as all of the accessories needed for a complete installation are in stock and available for immediate shipment. With free shipping within the Continental US for all Norton door closers and accessories, QualifiedHardware.com is your ideal choice for immediate delivery of dependable Norton products.