| 摘要 |
<p>A flow diversion valve for use in a plant for the continuous heat treatment of liquids such as milk, beer and fruit juices comprises a valve adapted to open or close a product diversion line, a pair of valves in series in the product outlet line and adapted to close or open simultaneously with the opening or closing of the valve in the diversion line, and means for pressurizing the part of the output line between the said pair of valves when they are closed. The pressurizing means may be compressed air or steam, or may comprise a piston, plunger, bellows or diaphram loaded by external means such as compressed air or a spring.</p> |
