| 摘要 |
PROBLEM TO BE SOLVED: To adjust pressure with simple structure by constituting a pressure adjusting valve body with a base part which can be contracted in a direction orthogonal to a flow passage, a circular inclination part and a hole. SOLUTION: A pressure adjusting valve body 10 is composed of a base part 11, a circular board part 12, a circular inclination part 13 and a hole 14 formed on the tip 13a side of the part 13. The valve 10 can be stored in a circular storage part which is formed in a conduit and has a hole in a center and is in an almost circularly planar shape. The valve body 10 is integrally formed by the elastic member of synthetic rubber. When fluid (water) is made to pass through the conduit through the valve body 10, pressure on an up stream side is given to the upper face side of the circular board part 12 and the circular inclination part 13. When the pressure of water exceeds a prescribed range, the circular inclination part 13 elastically deforms and it is deformed to a state close to a flat form. The diameter of the hole 14 is slightly reduced, the pressure of water flowing to a secondary side is made small and a flowing water rate is correspondingly reduced.
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