| 摘要 |
PROBLEM TO BE SOLVED: To remove foreign matter deposited on a float outer surface and a tip face of a valve seat member. SOLUTION: A valve casing is formed of a main body 1 and a lid 2, and an inlet 5, a valve chamber 4, and an outlet 7 are formed on the valve casing. A valve seat member 8 having a valve port 12 communicating the valve chamber 4 and the outlet 7 is mounted on the lower part of the valve chamber 4. The float 17 for separating from/seating on the valve seat member 8 and opening/closing the valve port 12 is arranged in a free state in the valve chamber 4. The inlet 5 is connected to inlet piping 21. Cleaning piping 22 branching from the inlet piping 21 is connected to the inlet piping 21. A cleaning nozzle 23 is attached to the cleaning piping 22, and the cleaning nozzle 23 is threadedly connected to the main body 1. The cleaning nozzle 23 injects fluid in the inlet piping 21 between the float outer surface and the tip face of the valve seat member. COPYRIGHT: (C)2007,JPO&INPIT
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