Aviall Product Catalog And Source Book Page 1450 Environmental & Oxygen

AVOX SYSTEMS OXYGEN EQUIPMENT aviall.com North America and AOG 1.800.AVIALL.1 International Sales 1.800.AVIALL.3 or +1 972.586.1985 1450 REGULATORS 22504/22505 Series continuous flow control regulator - pneumatic and electro-pneumatic. These pneumatic and electro-pneumatic regulators form a part of the passenger emergency oxygen system when installed on a pressurized cabin aircraft. When the cabin pressure drops below a predeter- mined setting, the system automatically initiates and controls the flow of oxygen to the passenger mask compartment. At any altitude the system may be activated manually at the pneumatic regulator and/or electrically through the electro-pneu- matic regulator. The electro-pneumatic regulator is available with a built-in pressure transducer for monitoring the oxygen supply pressure with an output in the 0 to 5 V DC range. Outstanding Features: Accurately reduces pressure and controls flow of high pressure (1850 to 300 psi) oxygen. Choice of automatic, electrical, and manual operation. Compact, altitude-compensated system. First stage and outlet pressure relief valves. Operation: When oxygen cylinder pressure range from 1850 to 300 psi (12.76 to 2.07 MPa) is applied to the inlet of the unit, a first-stage pressure reducer regulates it to a relatively constant value of approximately 100 psi (0.69 MPa). This controlled first stage pressure is routed to the actuation valve and to the pilot-operated main flow control valve. Automatic Actuation: At a typical altitude of 13,250 ft. to 14,500 ft. (4039 to 4389 m), the actuation valve inside the FCU opens and automatically activates the regulator. Manual Actuation: The system may be activated manually at any altitude by raising the manual actuation/reset lever on the pneumatic control regulator. Raising the manual actuation/reset lever overrides the automatic mechanism. NOTE: For continuous operation at altitudes below the automatic actuation range, the lever must be held in the actuated condition. Electric Actuation: The system may be actuated electrically at any altitude by momentarily energizing the solenoid switch in the cockpit of the aircraft. Actuation of the solenoid within the electro-pneumatic control regulator overrides a detent, causing opening of the actuation valve, overriding the automatic mechanism. Manual Reset: (Cabin pressure must be below 12,000 ft. [3,658 m] altitude.) After actuation (automatic or electrical), the system is reset by depressing the manual actuation/reset lever on the pneumatic control regulator or the manual reset lever on the electro-pneumatic control regulator. The automatic actuation, manual actuation, and electrical actuation capabilities are retained after resetting. Electric Reset: (Cabin pressure must be below 12,000 ft. [3,658 m] altitude.) After actuation, the system is reset by momentarily engergizing the solenoid switch in the cockpit of the aircraft. Energizing the solenoid releases the actuation detent, and allows the system to shut down. The actuation and surge capabilities of the unit are retained after resetting. Part No. Boeing Part No. Actuation Altitude Pressure Transducer Comments 22504-07 BAC 10-60511-3 13,250-14,500 ft. Yes Electro-pneumatic 22504-09 BAC 10-60511-4 13,250-14,500 ft. No Electro-pneumatic 22504-11 BAC 10-60511-5 14,000-15,000 ft. Yes Electro-pneumatic 22505-07 BAC 10-60510-3 13,250-14,500 ft. No Pneumatic/manual 22505-09 BAC 10-60510-4 14,000-15,000 ft. No Pneumatic/manual Altitude/Flow Data Maximum Regulated Altitude Regulated Pressure Flow (NTPD) Ground 2.25-5.25 PSIG 230 lpm 14,000 feet (4267m) 10.9-14.0 PSIA 230 lpm 20,000 feet (6096 m) 17.6-20.6 PSIA 430 lpm 30,000 feet (9144 m) 38.7-41.9 PSIA 770 lpm 40,000 feet (12,192 m) 52.7-56.7 PSIA 1000 lpm

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