Thetford
Thetford is a company that designs and manufactures RV sanitation and cooling products, founded in 1963.
Last updated September 2, 2026
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Overview
Thetford, founded in 1963, is known for its RV products including toilets, holding tank treatments, and portable totes. The company has introduced innovations such as the first Slide-Action Valve for RV holding tanks, the Porta Potti portable toilet, and the Aqua-Magic RV toilet line.
History
Thetford Engineering was founded in 1963 in a Thetford Township garage near Flint, Michigan. Frank Sargent and his two sons designed the first Slide-Action Valve for RV holding tanks. In the following years, they developed the first low profile RV toilet, the first Water Saving Hand Spray Attachment, and the first low-water-use RV toilet. In 1967, Thetford introduced Aqua-Soft toilet paper and Aqua-Kem holding tank treatment. Between 1968 and 1970, they revealed the Porta Potti portable toilet and the first all-polypropylene permanent RV toilet. In 1990, they introduced the first battery-powered portable toilet, the Porta Potti Electric.
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