Patent ID: 6945278
Filing Date: 2005-09-20
Classification: B64D,Y02T,Y10T

Abstract:
1. An aircraft cabin pressure control system valve, comprising: a valve body adapted to mount proximate an aircraft fuselage, the valve body configured as a flow duct having at least a first flow port, a second flow port, and a main flow passage therebetween; an outflow control valve mounted proximate the valve body and moveable between an open position and a closed position to thereby control airflow through the main flow passage; a valve actuator mounted on the valve body, the valve actuator adapted to receive valve position command signals and operable, in response thereto, to position the outflow control valve; a negative pressure relief valve mounted proximate the valve body and configured to fluidly couple the main flow passage to an environment external to the valve body when fluid pressure in the main flow passage exceeds fluid pressure in the valve body external environment by a first predetermined magnitude; and a positive pressure relief valve mounted proximate the valve body and configured to fluidly couple the main flow passage to the valve body external environment when the fluid pressure in the valve body external environment exceeds the fluid pressure in the main flow passage by a second predetermined magnitude.