Abstract: A lever for the application of a force to a resilient component of vacuum bag-in-box fluid containers to facilitate fluid flow. Lever has a linear body having a relatively short arm for engaging the resilient component, at one of its ends and extending normally therefrom. Projecting outwardly from the body in a sense opposite to that of the arm is an angular member or protrusion for preventing overrotation of the lever during use. A bore in the body, positioned between the arm and angular member, permits the pivotal attachment of a D-shaped wire loop for securing the lever to the fluid valve during use.