To provide a device for opening/closing a flow channel, which can quickly open/close a main valve for starting/stopping water supply, while making an instantaneous flow of the water supply constant, and which can also be downsized.
A constant flow means for operating to maintain a constant main flow rate of water flowing from a primary-side internal flow channel 20 to a secondary-side internal flow channel 30 is incorporated into a flush valve CV serving as the device for opening/closing the flow channel. The constant flow means, which comprises a constant flow valve body 44 and a constant flow valve seat, operates to adjust a distance between the constant flow valve body 44 and the constant flow valve seat. The constant flow means is formed as a valve member 40 in which a main valve body 42 and the constant flow valve body 44 are integrated together.
MIYAKE TASUKU
UCHIDA TETSUYA
OSHIKAWA TAKUYA
SUZUKI TAKAMASA
| JP2004019845A | 2004-01-22 | |||
| JP2003278214A | 2003-10-02 |
Toshifumi Onuki
Akihiko Eguchi
Kazuhiko Naito
Toru Kamada
Next Patent: ON-VEHICLE WIRELESS COMMUNICATION SYSTEM