Air-pressurized water fire extinguisher, partially filled with water and then pressurized with an air pump; popular in the US in the 2½-gallon size, rated 2A
Wikipedia, The Free Encyclopedia, Glossary of firefighting equipment, Wikimedia Foundation, http://en.wikipedia.org/wiki/Glossary_of_firefight ing_equipment, CA, USA 2012. (Fr Srvc - Amer) {509}