| 摘要 |
There is provided a new and useful liquid flow controller head comprising a housing, a first chamber within the housing, a piston having first and second sides and mounted in the chamber in sealed sliding engagement therewith, the piston adapted to engage and operate a push/pull activation lever of a liquid dispensing tap, and fluid passages through the housing into the chamber on opposite sides of the piston, and wherein the size of the fluid passages is chosen such that, when either passage is charged with compressed air at a predetermined pressure, the piston will slide responsive to the pressure at a predetermined speed.
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