TIP-RESISTANT VALVE PLUGS

摘要

A tip-resistant valve plug comprises a valve head, first and second retention legs, and an anti-tip fin. The valve head defines a fluid barrier. The anti-tip fin and the retention legs extend from the same side of the valve head. The anti-tip fin comprises a groove that allows the valve head to flex along a longitudinal fin axis; the anti-tip fin extends from the side of the valve head to a fin height dimension that is greater than a relief spring compression dimension caused by the tip-resistant valve moving between a closed position and an open position; or the valve head has a smaller moment of inertia evaluated in a direction the anti-tip fin extends across the valve head than a moment of inertia evaluated in a direction normal to the direction the anti-tip fin extends across the valve head.

主权项

1. A tip-resistant valve plug comprising a valve head, first and second retention legs, and an anti-tip fin, wherein:
the valve head defines a fluid barrier; the anti-tip fin and the retention legs extend from the same side of the valve head; and (i) the anti-tip fin comprises a groove that allows the valve head to flex along a longitudinal fin axis; (ii) the anti-tip fin extends from the side of the valve head to a fin height dimension that is greater than a relief spring compression dimension caused by the tip-resistant valve moving between a closed position and an open position; or (iii) the valve head has a smaller moment of inertia evaluated in a direction the anti-tip fin extends across the valve head than a moment of inertia evaluated in a direction normal to the direction the anti-tip fin extends across the valve head.