Importance

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Abstract

A random access rotary pinch valve for controlling fluid flow through a plurality of fluid conduits. The valve is adapted to receive and retain the fluid conduits and includes, for each of the conduits, a toggle mechanism comprising a piston and a toggle. The piston and toggle can be latched to pinch the associated fluid conduit to a non-conducting state or may be latched with the conduit in a fluid conducting state. An actuator arm is selectively positioned over the toggle mechanisms and is displaced so as to actuate the toggles from one state to another, thus changing the state of fluid conduction through the associated flexible conduit. In the embodiment disclosed herein, the fluid conduits are arranged about the periphery of an annular valve body and the actuator arm is pivoted by means of the stepper motor over the toggle mechanisms.

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First Claim