| 摘要 |
A liquid color pumping includes a housing, a plurality of pushers within the housing, a deformable tube for transporting liquid color from the supply thereof to where the liquid color will be used with the tube being positionably removable in the housing at a location at which of the pushers when displaced squeeze the tube positioning of the pushers resulting in the pushers serially contacting the tube when displaced and the controller repeated actuating the pushers in sequence to draw liquid color into the pumping zone and then to force liquid color out of the pumping zone through the tube at increased pressure.
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