Patent ID: 9416887
Filing Date: 2016-08-16
CPC Classification: F04B,F16K,Y10T

Claim Text:
1. A positive displacement pump fluid end having at least one fluid chamber, comprising: a valve seat; a valve body configured to be received in said valve seat to form a fluid seal therewith, said valve body comprising a tapered internal guide bore having a first taper and a stem seat section at a distal end of said internal guide bore; a tapered guide rod, having tapered body section comprising a second taper complimentary to said first taper and a seating end section shaped to mate with said stem seat section when the valve is in the fully opened position, said tapered guide rod secured to a component of said fluid end, said tapered guide rod received in said tapered internal guide bore of said valve body to provide support for reciprocal motion of said valve body along a predetermined axis; and a spring providing a biasing force to force said valve body toward a closed position with said valve seat.