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Publication of TW347337BpublicationCriticalpatent/TW347337B/en
A fluid delivery device which uses the roller of a roller pump to roll resiliently deformable tubes thereby delivering a fluid from a source to a destination; which is characterized in comprising: a bypass flowpath installed on the inflow/outflow side pipe lines of tubes, mounted with the roller pump; and flowpath switch means for selectively flowing the fluid through the bypass flowpath.
Roller pump device or liquid feed pump device, roller pump device or roller pump system provided with liquid feed pump device, and liquid pump system and method of operating roller pump device or liquid feed pump device
DEVICE FOR OBSTRUCTING A PIPELINE, PREVENTING A FLUID FROM ARRIVING TO THE CONSUMER, WHEN RESUMPTION OF THE DISTRIBUTION IF, BEFORE, AT ANY TIME OF THE SUPPLY CUT, A TAP WAS OPEN DOWNSTREAM OF THE DEVICE.