| 摘要 |
<p>PURPOSE: To offset fluid pressure each other so as to open a valve easily by sliding a supply side inner pipe of a supply side connecting cylindrical body to open a valve part of it and receiving fluid pressure opposed to each other in the axial direction on pressure receiving surfaces formed at both end surfaces of the supply side inner pipe. CONSTITUTION: A flow path 2 is formed inside a supply side connecting cylindrical body 1. Also a slidable supply side inner pipe 3 is inserted into the top end part of the supply side connecting cylindrical body 1. Then a stopper 5 is provided so that a valve part 4 formed at the top end of the supply side inner pipe 3 is closed. In addition, the supply side inner pipe 3 inserted into the supply side connecting cylindrical body 1 forms pressure receiving surfaces 8 and 9 of which both end surfaces face the fluid path 2. By this, fluid pressure acting on the pressure receiving surfaces 8 and 9 are offset to each other and balanced. Thus a fluid pressure acting in parallel with the axis of the inner pipe 3 is almost present on the pressure receiving surfaces 8 and 9 formed at both ends of the supply side inner pipe 3.</p> |
