Saddle valve - wikipedia Saddle valve This article has multiple issues. Please help improve it or discuss these issues on the talk page. ( Learn how and when to remove these template messages ) This article does not cite any sources. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. ( December 2009 ) This article is an orphan, as no other articles link to it. Please introduce links to this page from related articles ; try the Find link tool for suggestions. ( December 2009 ) A saddle valve used to connect a humidifier 's water intake to a residential cold water pipe. A saddle valve is a valve used to supply liquid where a low volume, low pressure stream is required. The name is derived from the fact that it is mounted in such a way that it `` saddles '' the line, mounting it from both sides. They are typically used for supplying cold water, via a 3 / 8 inch tube, to : humidifiers and icemakers in freezers. A saddle valve is mounted directly on to a pipe which is usually 1 / 2 inch copper tubing. Saddle valves are self - tapping devices. Once mounted on a line, with the included rubber seal in place, all that is required is to turn the valve clockwise until it pierces the water line. When the valve handle can no longer be turned, it is done tapping the pipe. Turning the handle counter-clockwise opens the valve. These valves can be installed without shutting off the main water supply. Plumbing codes, local or international, often do not allow use of a saddle valve ; instead a tee and a conventional globe, gate, or ball valve is to be installed. Saddle valves often fail and should be avoided. See also Valve Plumbing Retrieved from `` https://en.wikipedia.org/w/index.php?title=Saddle_valve&oldid=619737748 '' Categories : Valves Hidden categories : Articles lacking sources from December 2009 All articles lacking sources Orphaned articles from December 2009 All orphaned articles Talk About Wikipedia Add links This page was last edited on 3 August 2014, at 23 : 21. Text is available under the Creative Commons Attribution - ShareAlike License ; additional terms may apply. By using this site, you agree to the Terms of Use and Privacy Policy. Wikipedia ® is a registered trademark of the Wikimedia Foundation, Inc., a non-profit organization. About Wikipedia

Question: what is a saddle valve on a water line
Answer: valve used to supply liquid