A bibcock, also called a sillcock, is commonly used to provide hose connections outside of buildings, for use in gardening, watering lawns, washing cars, Cleaning carpet, and so on. Certain bibcocks are colloquially known as frost-frees because they are immune to all but the worst freezing conditions.
A bibcock can be any of several valve types; commonly they have a removable control key called a "Loose key" that pushes a rubber plug against an opening in order to close the valve. The downstream side of the valve is threaded to match standard garden hoses.
Most U.S. jurisdictions now require bibcocks to have a vacuum breaker or backflow preventer, so that water cannot return through the bibcock from the hose. This prevents contamination of the building or public water system should there be a pressure drop. In the UK, a double check valve is required to conform with water regulations; this is often incorporated within the body of the tap itself.
WIPO: Publication No. WO/2009/091118 Published for Bibcock having Potable Water Tap on July 23 (South Korean Inventor)
Jul 24, 2009; GENEVA, July 24 -- Dong Youl Kim, South Korea, has developed a bibcock having potable water tap. According to an abstract...
WIPO: Publication No. WO/2009/091135 Published for the Bibcock Having the Cold Water and Warm Water Mixture are Possible on July 23 (South Korean Inventor)
Jul 24, 2009; GENEVA, July 24 -- Sang Tae Park, South Korea, has developed the bibcock having the cold water and warm water mixture are...