Patent ID: 7290561

Claim:
An apparatus for disabling a valve assembly in a pump, the pump defining a bore for receiving the valve assembly, the valve assembly including a valve poppet, a valve seat, and a spring biasing the valve poppet against the valve seat, the apparatus comprising: a magnet attracting the valve poppet away from the valve seat, thereby holding the valve poppet in an open position; an adjustment mechanism for moving the magnet toward and away from the valve poppet, whereby when the magnet is moved toward the valve poppet, the magnet attracts the poppet away from the valve seat, and when the magnet is moved away from the valve poppet, the magnet releases the poppet, the spring thereby again biasing the poppet against the valve seat in a closed position; (c) further comprising a casing enclosing the magnet wherein the casing has a bore therethrough; (d) wherein the bore encloses an adjusting rod attached to the magnet, the adjusting rod reciprocating within the bore; and (e) wherein the adjusting rod is threaded within the bore and further comprises a threaded portion.