| 摘要 |
PROBLEM TO BE SOLVED: To provide a negative pressure destructor for a water-service installation, which positively blocks an opening space by smooth elevation of a valve main body during feeding of water, and positively prevents water vapor in a feed water tank from leaking from the opening space to the outside during termination of feeding of water. SOLUTION: The negative pressure destructor N is arranged in a warm water tank 11 for storing therein water force-fed from a feed water source, and formed of a valve container 13, a cover member 23, and the valve main body 31. The valve container has a side wall portion 14 which is formed in an upper wall of the warm water tank and opened at an upper edge vertically recessed inward, and a bottom wall portion 15 which seals a lower edge of the side wall portion. The cover member is mounted in an upper inner surface of the side wall portion, and has the opening space 23a smaller in diameter than an opening of the side wall portion. The valve main body is housed on a lower side of the cover member in the valve container, and floats on water. COPYRIGHT: (C)2006,JPO&NCIPI
|
