High impact discharge valve
AssigneeAir Products and Chemicals, Inc.
InventorsDavid Jonathan Chalk, Thomas T. Hand, David John Farese
Life of this patent
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Abstract
A check valve for use in a pump. The valve is arranged to be subjected to severe service conditions and high impact loads, yet be resistant to damage to its components. The check includes a body, a valve seat, a poppet and an impact cushion. The poppet is movably coupled to the valve seat and is biased by a spring into engagement with the valve seat. Upon the opening of the valve the poppet moves off of the valve seat and into engagement with the impact cushion against the spring bias. The impact cushion is movably coupled to the valve body and is biased by another spring. When the poppet engages the impact cushion they stay together and move, with the movement of the impact cushion absorbing energy from the poppet.
Claims17
A check valve for use in a pump subjected to severe service conditions and high impact loads, said valve comprising:
- a valve body, a valve seat, a poppet and an impact cushion;
- said valve seat being coupled to a port at which a pressurized fluid may be introduced;
- said poppet being movably coupled to said valve seat and biased to normally engage said valve seat while being arranged to move off of said valve seat and into engagement with said impact cushion against said bias;
- said impact cushion being movably coupled to said valve body and biased, whereupon when said poppet moves into engagement with said impact cushion said impact cushion and said poppet stay together and said impact cushion moves with respect to said valve body to absorb energy from said poppet.
Dependencies are inferred from the claim text.