| 摘要 |
A flush system for a toilet (31) consists of a sealed flush tank (1) which is normally empty, a feed valve (2) connecting the tank (1) to the water supply, and a flush valve (3) for discharging water under pressure from tank (1) to the toilet (31). In use, start button (6) is depressed, admitting water from the supply through valve (3) and check valve (12) into tank (1). Air above the water in the tank (1) is compressed until it reaches supply pressure, closing valve (4). A small amount of water from valve (3) bleeds through port (14) in plug (15), gradually reducing the pressure on plug (15), until pressure in the tank unseats plug (15), thus admitting a pressurized flush into toilet (31). |
