| 摘要 |
PROBLEM TO BE SOLVED: To accurately set an air pressure, and to confirm hose damage during hose damage testing, without fail. SOLUTION: A first testing tool 60 is removably fitted to a nozzle connecting port of a hose 28, and an air pressure injection valve 64 is opened, and is then closed, after air pressure is injected in the hose, and the injected air pressure is maintained inside the hose. A regulator outputs the pressure of air pressurized and fed from an air pressure source. A second testing tool 70 is attached to a maintenance device 44, disposed in water supply piping to which a primary side of the hose 28 is connected so as to shut off the communication between the hose primary side and the water supply piping. The air pressure injected inside the hose 28 is maintained by closing an air vent valve 76, and the air pressure injected inside the hose 28 is released by opening the air vent valve. The air pressure maintained inside the hose 28 is verified by a pressure gauge 68. COPYRIGHT: (C)2011,JPO&INPIT |
