| 摘要 |
PURPOSE:To secure high sealing performance by inserting a valve piece having a diameter larger than that of an introducing hole, in slidable ways into the guide groove on a valve body made of fiber-reinforced plastic or thermoplastic resin or rubber. CONSTITUTION:A body 11 is formed into flange form and an introducing hole 12 is formed at the center part, and a valve piece 13 having a diameter larger than that of the introducing hole 12 is accommodated in slidable ways into the guide groove 15A on a guide frame 15. Therefore, the introducing hole 12 can be perfectly closed by the valve piece 13, and exceedingly high sealing performance can be secured. Since the valve body 11 is made of fiber-reinforced plastic or thermoplastic resin or rubber highly corrosive gas, hot water, steam, pressurized water, etc. can be used. |
