作者: Leo W. Fleury , Mikhail German , Ken Clark
DOI:
关键词:
摘要: A fire hydrant system relating to protection of a water supply from contamination. The includes barrel adapted communicate at least indirectly with supply; nozzle extending the barrel; valve controllably regulate communication between and actuator allow actuation valve; cap close off opening; shoe in supply, comprising backflow prevention assembly, wherein can flow through into an open position assembly disc, media cannot enter via when disc is closed position.