| CPC B29C 64/329 (2017.08) [B22F 12/52 (2021.01); B33Y 30/00 (2014.12); B33Y 40/00 (2014.12)] | 23 Claims |

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1. An operating handle for controlling the operational state of a valve arrangement associated with a container to control dispensing of material from the container to a component of an additive manufacturing process, the operating handle comprising:
a rotatable shaft coupled to the valve arrangement, the shaft being rotatable between a plurality of angular positions corresponding one or more operational states of the valve arrangement; and
a lever operatively coupled to the shaft and configured to cause rotation of the shaft between the plurality of angular positions upon rotation of the lever;
wherein the handle is rotatable under the operation of an actuator provided as part of a docking arrangement associated with the component, and wherein the handle is configured such that the lever is acted on directly by one or more components of the actuator.
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