WET BARREL FIRE HYDRANT SYSTEM WITH SECOND VALVE

摘要

Wet barrel fire hydrants (10) which feature additional structure for redu cing the potential that those with ill intent can foul municipal water suppl ies by- introducing toxins or other materials into fire hydrants. Various em bodiments include valves which close off portions of the hydrant or water co nduit otherwise available for receipt of toxic or other materials when the f ire hydrant nozzle cap is unscrewed and open and/or a pump is connected to t he nozzle (14). Such valves preferably open automatically when water is flow ing from the water supply through the nozzle (14), but close off portions of the barrel when the nozzle (14) is open and water is not flowing through th e nozzle (14).