| 摘要 |
Compressed air is utilized for water evacuation from water hose or other liquid containing systems. A freeze-free water hose device is provided which includes an air pump-compressor means, a Y-coupling with a water faucet. In one case, there is utilized one Y-coupling with one shut-off valve and an air-compressor means in a water faucet vicinity or on a faucet's wall. In another case, there is utilized a Y-coupling at a water faucet with one shut-off valves and a Y-coupling with three shut-off valves at a water hose reel. Yet in another case, there are utilized two Y-couplings each with two shut-off valves: one Y-coupling at a faucet and another at a water hose reel. In this case, a compressed air means is assembled with a water hose reel. This device is utilized also in beer, soda and water industry for cleaning lines with chemicals or pure water.
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