a stem extending upwardly from the head away from the valve seat a valve guide has a socket for slidably receiving the stem of the piston and a number of apertures intersecting the socket for providing pressure relief thereto a compressed spring is disposed between the valve guide and the head for normally retaining said the in engagement with the valve seat application_number US 11501702 A description referring now to the figs a discharge valve in accordance with the present invention is shown at 10 valve 10 includes a valve seat 12 for positioning in a discharge passage 14 of a fluid end 16 and a reciprocating piston 18 for controlling the flow of fluid through passage 14 piston 18 has a head 20 for engaging the top surface 22 of seat 12 and a stem 24 extending upwardly from head 20 stem 24 is slidably positioned in a close fitting socket 26 in a valve guide 28 positioned above valve seat 12 in passage 14 a number of apertures 30 connect the inner end of socket 26 with passage 14 to prevent piston 18 from becoming stuck in a raised or open position a compressed spring 32 is disposed between the valve guide 28 and head 20 to normally retain head 20 in engagement with valve seat 12 valve seat 12 is a hollow cylinder or tube with top and bottom surfaces 22 and 34 that are shaped to reduce turbulence as shown top surface 22 is beveled such that it slopes downwardly and inwardly toward the center of seat 12 at an angle of about 30 u00b0 bottom surface 34 however slopes upwardly and inwardly at an incline that increases evenly.