Pump having radial discharge valve

Claim 1

A PUMP COMPRISING: (1) A FLUID END BLOCK HAVING, (A) A CYLINDRICAL PISTON OPENING THEREIN, (B) THE CYLINDRICAL PORTION OPENING TERMINATING IN A COAXIAL LARGER DIAMETER CYLINDRICAL VALVE BLOCK CAVITY, (C) THE CYLINDIRCAL PISTON OPENING HAVING AN INTERMEDIATE COAXIAL CYLINDRICAL INTAKE VALVE CAVITY, (D) THE INTERNAL DIAMETER OF THE INTAKE VALVE CAVITY BEING INTERMEDIATE THE INTERNAL DIAMETER OF THE CYLINDRICAL PISTON OPENING AND THE VALVE BLOCK CAVITY; (2) A PISTON RECIPROCALLY POSITIONED IN THE CYLINDRICAL PISTON OPENING; (3) A CYLINDRICAL FLAT DISC INTAKE VALVE HAVING, (A) A COAXIAL OPENING THEREIN, (B) THE INTAKE VALVE HAVING AN EXTERNAL DIAMETER SLIGHTLY LESS THAN THE INTERNAL DIAMETER OF THE INTAKE VALVE CAVITY, (C) THE INTAKE VALVE BEING RECIPROCALLY SUPPORTED IN THE INTAKE CAVITY, (D) THE INTERNAL DIAMETER OF THE OPENING THEREIN BEING SLIGHTLY GREATER THAN THE DIAMETER OF THE PISTON; (4) A CYLINDRICAL VALVE SEAT BLOCK HAVING, (A) A FORWARD AND A REARWARD SEATING FACE, (B) THE VALVE SEAT BLOCK POSITIONED IN THE FLUID END VALVE BLOCK CAVITY, (C) THE FORWARD END OF THE VALVE SEAT BLOCK BEING IN SEALING ENGAGEMENT WITH THE FORWARD END OF THE VALVE BLOCK CAVITY, THE FORWARD END OF THE VALVE SEAT BLOCK FORMING A BOUNDARY OF THE INTAKE VALVE CAVITY AND FORMING AN INTAKE VALVE SEATING SURFACE, (D) THE VALVE SEAT BLOCK HAVING AN AXIAL DISCHARGE VALVE OPENING IN THE REARWARD PORTION THEREOF, (E) AND A COAXIAL SMALLER DIAMETER DISCHARGE VALVE INLET OPENING IN THE FORWAD PORTION THEREOF, (F) THE INTERSECTION OF THE DISCHARGE VALVE INLET OPENING AND THE DISCHARGE VALVE OUTLET OPENING DEFINING A DISCHARGE VALVE SEATING SURFACE,