Control for vapor flow valve

Claim 1

IN A VAPOR CONDENSING SYSTEM OF THE KIND WHEREIN A VAPOR CONDENSING DEVICE HAS AN INLET CONDUIT CONNECTED TO A SOURCE OF SUPPLY OF VAPOR AND A CONTINUOUSLY OPEN OUTLET CONNECTED TO AN OUTLET CONDUIT, A CONTROL MECHANISM FOR REGULATING THE SUPPLY OF VAPOR TO THE CONDENSATING DEVICE COMPRISING, A REGULATING VALVE DISPOSED IN THE CONDUIT FOR GOVERNING THE AMOUNT OF VAPOR SUPPLIED TO THE CONDENSING DEVICE, FIRST MEANS RESPONSIVE TO THE FLUID TEMPERATURE AT THE OUTLET OF THE CONDENSING DEVICE FOR MOVING THE VALVE IN A CLOSING DIRECTION, SECOND MEANS RESPONSIVE TO THE FLUID PRESSURE WITHIN THE CONDENSING DEVICE FOR MOVING THE VALVE IN AN OPENING DIRECTION, A FLEXIBLE ELEMENT CONNECTED TO THE VALVE TO EXERT A BIASING FORCE TO MOVE THE VALVE IN A CLOSING DIRECTION, AND CONDUIT MEANS CONNECTED TO SUPPLY A FLUID UNDER PRESSURE TO THE FLEXIBLE ELEMENT, WHEREBY THE PRESSURE ACTING ON THE FLEXIBLE ELEMENT MAINTAINS A DIFFERENTIAL BETWEEN THE TEMPERATURE OF THE FLUID AT THE CONDENSING DEVICE OUTLET AND THE SATURATION TEMPERATURE CORRESPONDING TO THE PRESSURE INTERNAL OF THE CONDENSING DEVICE SO AS TO MAINTAIN A SUB-COOLED CONDITION OF THE CONDENSATE AT THE OUTLET AS DETERMINED BY THE BIASING MEANS FOR ANY VAPOR PRESSURE WITHIN THE CONDENSING DEVICE.