Meter prover and diverter valve therefor

Claim 1

IN A MULTIPORT VALVE CONSTRUCTION, A VALVE BODY COMPRISING PARALLEL FIRST AND SECOND SUBSTANTIALLY FLAT END WALLS AND A SUBSTANTIALLY CYLINDRICAL PART INTERPOSED BETWEEN AND SEALED WITH RESPECT TO THE END WALLS, AT LEAST FOUR CIRCUMFERENTIALLY SPACED OPENINGS IN THE FIRST END WALL OF THE BODY FOR MAKING CONNECTION WITH ASSOCIATED PIPING, A VALVE MEMBER ROTATABLY DISPOSED WITHIN THE VALVE BODY, SAID VALVE MEMBER COMPRISING PARALLEL FLAT FIRST AND SECOND CIRCULAR END WALLS AND A CYLINDRICAL PART SECURED AT ITS ENDS TO THE PERIPHERAL EDGES OF THE END WALLS, THE DIAMETER OF THE CYLINDRICAL PART OF THE VALVE MEMBER BEING LESS THAN THE INTERNAL DIAMETER OF THE CYLINDRICAL PART OF THE BODY, THE EXTERIOR SURFACES OF THE FIRST AND SECOND END WALLS OF THE VALVE MEMBER BEING IN SPACED JUXTAPOSITION WITH THE INTERIOR FACES OF THE FIRST AND SECOND END WALLS OF THE BODY, AT LEAST FOUR CIRCUMFERENTIALLY SPACED PORT OPENINGS IN THE FIRST WALL OF THE VALVE MEMBER AND ADAPTED TO REGISTER WITH THE OPENINGS IN THE FIRST END WALL OF THE VALVE BODY, SHAFT MEANS SERVING TO ROTATABLY MOUNT THE VALVE MEMBER WITHIN THE VALVE BODY FOR ROTATION ABOUT THE CENTRAL AXIS OF THE VALVE MEMBER, SEALING MEANS DISPOSED TO SURROUND EACH OF THE OPENINGS IN THE FIRST END WALL OF THE VALVE BODY, EACH OF SAID SEALING MEANS SERVING TO ESTABLISH SEALING RELATION BETWEEN THE VALVE BODY AND THE ADJACENT FIRST END WALL OF THE VALVE MEMBER, AND BARRIER MEANS FIXED WITHIN THE VALVE MEMBER AND EXTENDING ACROSS THE INTERIOR OF THE SAME, SAID BARRIER FORMING TWO SEPARATE FLOW PATHS, EACH PATH BEING IN COMMUNICATION WITH TWO ADJACENT ONES OF THE PORTS IN THE VALVE MEMBER.