Patent ID: 7066193

Claim:
A shear protection device for use with a valve, the device comprising: a poppet, said poppet including a bore and wherein said poppet includes first and second openings at distal ends of said poppet; a retainer plug attached to the second opening of said poppet, said retainer plug enclosing said poppet bore; a seat plug disposed in said poppet bore, wherein said seat plug is moveable within said poppet bore; said poppet and said retainer being constructed and arranged to envelope said seat plug; a shear tube with first and second ends extending through said first opening of said poppet, said first end abutting said seat plug through said first opening of said poppet and wherein said shear tube displaces said seat plug from the top of said poppet bore; said shear tube being constructed and arranged to secure said seat plug against said retainer plug; wherein when said poppet is attachable to the valve, a compressed gas or liquid passes through the poppet into the valve; and wherein said compressed gas or liquid causes said seat plug to forcibly engage the top of said poppet bore when said shear tube is removed and wherein said seat plug blocks the flow of the gas or liquid.