This article needs additional citations for verification. (December 2009)
A plumber wrench (or plumber's wrench, pipe wrench, Swedish wrench or Swedish pattern wrench) is a form of plier described as a pipe wrench that uses compound leverage to grip and rotate plumbing pipes. Similar to the action of a Vise Grip plier, its jaw opening is adjusted to width by rotating a threaded ring. Its advantage is that it grips with significant force without needing to engage a lock nut like an adjustable tongue-and-groove plier. Like these, it can also be used on nuts, particularly hex shaped, and other flat engagement points. If used carelessly it can dent or break plumbing pipe.
The plumber wrench was invented in 1888 by the Swedish inventor named Johan Petter Johansson. It shares some principles with both the Stillson-pattern pipe wrench and the rigid pipe wrench, as well as various forms of adjustable pliers, such as the Vise Grip and "Channelock" tongue-and-groove plier.
- "Wrenches and accessories". Atesina S.p.A. Retrieved 2015-03-08.
- "Plumbing Tools List – List of tools that plumbers use". Certified Plumbing. Retrieved 1 April 2020.
- "The History Of Plumber Wrenches And Their Uses". Plumbers 911. Archived from the original on 3 October 2015. Retrieved 5 August 2015.
- "The History of Bahco". Bahco. Retrieved 2016-11-11.