The John Guest Group of Companies is a British manufacturer of push-in fittings, pipe and plastic plumbing systems. Its industries and applications include Drinks Dispensing, Plumbing, Pneumatics, Compressed Air Systems, Water Purification, Drinks Vending, Automotive and Telecommunications.Headquartered in West Drayton, United Kingdom, the John Guest company has offices in Asia, Europe, and North America, as well as the Pacific. It was founded in 1961 by John Guest.The John Guest group was acquired by Reliance Worldwide Corporation Limited, in June 2018
