Abstract: A dispensing system may include a fluid container and a container receptacle. The fluid container may include a stacked arrangement of cross-slit valves through which a rigid projecting member of the container receptacle may be inserted through. Upon insertion of the rigid projecting member therethrough, fluid from the fluid container may flow into a tank of a 3D printing system through a dispensing channel of the rigid projecting member. The stacked arrangement of cross-slit valves acts a partial seal around the rigid projecting member, preventing fluid from leaking out of the fluid container from the outer surface of the rigid projecting member, while at the same time allowing ambient air to flow into the fluid container so as to backfill the partial vacuum created by the dispensing of the fluid from the fluid container.