| 摘要 |
<p>In a drink delivery system, drink is sent from alternative liquid supplies (1a,1b) along a supply line (92,93) to a dispensing point (8), e.g. at a bar. The present disclosure relates to features of the supply line operated by pressurised gas. In particular, a shut-off valve (6) may be positioned in the supply line downstream of the supply (1a,1b), and closable by the action of compressed gas triggered by a switch (107) at the bar. On the same switched line (106), an input (46) for clearing the line by displacing the residual drink using pressurised gas is provided. Means for switching automatically between one supply and the other (1a,1b) are also described. A gas-driven changeover valve (2) is positioned in the supply line upstream of a single changeover valve (3), such as a float-controlled valve, which is operated when a current supply approaches exhaustion, to actuate the gas-driven changeover valve (2) and thereby connect the other supply. <IMAGE></p> |
