Pressure sampling valve

Claim 1

A VALVE ASSEMBLY INCLUDING: A ROTATABLE ROTOR MEMBER HAVING A DISC-SHAPED UPPER SURFACE, A STATIONARY BLOCK MEMBER HAVING AN ANNULAR SURFACE DISPOSED IN SPACED FACING RELATIONSHIP WITH SAID DISC-SHAPED UPPER SURFACE OF SAID ROTOR MEMBER AND HAVING A PLURALITY OF APERTURES EXTENDING THERETHROUGH OR RECEIVING A CORRESPONDING PLURALITY OF PRESSURE INLET LINES AND HAVINGH A CENTRAL APERTURE THEREIN TO CONSTITUTE A CENTRAL PORT FOR THE VALVE ASSEMBLY, AN ANNULAR STATOR MEMBER DISPOSED IN THE SPACE BETWEEN SAID STATIONARY BLOCK MEMBER AND SAID DISC-SHAPED UPPER SURFACE OF SAID ROTOR MEMBER AND HAVING A PLURALITY OF APERTURES EXTENDING THERETHROUGH IN RESPECTIVE AXIAL ALIGNMENT WITH THE APERTURES OF SAID PLURALITY IN SAID STATIONARY BLOCK MEMBER; SAID STATOR MEMBER HAVING A CLOSELY FITTED SURFACE WITH SAID ROTOR MEMBER AND HAVING A BLEED-OFF CHANNEL SYSTEM SURROUNDING EACH SAID APERTURE OPENING THEREIN, SAID BLEED-OFF SYSTEM ESTABLISHING A MAXIMUM SURFACE EXPOSED TO THE PRESSURE WITHIN SAID APERTURE, A PLURALITY OF O-RINGS DISPOSED BETWEEN SAID STATIONARY BLOCK MEMBER AND SAID ANNULAR STATOR MEMBER BETWEEN RESPECTIVE ONES OF THE ENDS OF SAID APERTURES IN SAID BLOCK MEMBER AND THE ENDS OF RESPECTIVE ONES OF SAID APERTURES IN SAID STATOR MEMBER; SAID O-RINGS HAVING AN EFFECTIVE SEALING AREA AGAINST THE SURFACE OF THE STATOR MEMBER AROUND THE APERTURE, SAID EFFECTIVE SEALING AREA BEING RELATED TO THE SAID MAXIMUM SURFACE AROUND THE OPPOSITE END OF SAID APERTURE IN A RATIO TO BALANCE EFFECTIVE PRESSURE FORCES