Patent ID: 8757200

Claim:
A tip-resistant valve plug comprising a valve head, first and second retention legs, and an anti-tip fin, wherein: the valve head comprises a continuous partition defining a fluid barrier between a sealing side and an external side of the valve head; each of the first and second retention legs extend from a leg base positioned at the sealing side of the valve head to a distal end of the retention leg; each of the first and second retention legs comprise a plug catch configured to interfere with an inside diameter of a fluid flow orifice or a pressure relief spring; the respective distal ends of the retention legs are spaced apart from one another; the anti-tip fin extends from the sealing side of the valve head in a direction of the respective distal ends of the retention legs; the tip-resistant valve plug comprises a single anti-tip fin or a plurality of anti-tip fins extending from the sealing side of the valve head; and the valve head has a smaller moment of inertia evaluated in a direction the single anti-tip fin extends across the valve head than a moment of inertia evaluated in a direction normal to the direction the single anti-tip fin extends across the valve head.