| 摘要 |
PROBLEM TO BE SOLVED: To obtain feed water equipment which is simple in structure and capable of checking suitability of residual air quantity in a pressure tank. SOLUTION: The feed water equipment is constructed by connecting the pressure tank 7 and a water pipe 6 to a reservoir 1 via a feed water pump 2, mounting an air refilling device 9 on the pressure tank 7, for refilling air to the pressure tank 7 when air quantity in the pressure tank 7 is decreased, feeding tap water W1 stored in the reservoir 1 into the pressure tank 7 by means of the feed water pump 2, storing the tap water W1 in the pressure tank 7, and feeding the tap water to a faucet for the user via a feed water pipe 10 from the pressure tank 7. According to the feed water equipment thus constructed, a hole is formed in a wall surface of the pressure tank 7 at a location a predetermined dimensional differenceΔL higher than a water level HWL which is reached at the time of pressurization, and then an air quantity checking valve 15 is fitted in the hole. COPYRIGHT: (C)2003,JPO
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