Valve for use in jet engine systems and the like

US4561468A · kind A · utility

Assignee

• VALCOR ENGINEERING CORPORATION · US

Inventors

• Morton A. Kreitchman · South Orange, US
• Kurt Arnold · Kaiserslautern, DE

Key dates

• Filing date: Apr 19, 1982
• Grant date: Dec 31, 1985
• Expiry date: Apr 19, 2002

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T137/86895
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A valve is formed with a valve chamber and with an entrance port, a first exit port and a relief exit port each of which communicates with the chamber. A valve member is movably mounted within the chamber, and a pair of valve seats is mounted within the chamber for cooperation with the valve member, one of the seats being movable. The valve member and movable seat are biased in such a manner that the valve is normally seated with respect to both seats. When fluid in the entrance port exceeds a certain crack pressure, the movable seat moves away from the valve member and the fluid flows out the relief exit port. To stop flow out the relief exit port without creating a pressure surge, the valve member, actuated by a control, seats against the movable seat and at the same time moves away from the other seat so that the fluid continues to circulate through the first-named exit port. The valve is particularly adapted for efficient control of the flow of fuel during start-up, operation and shutdown of the jet engine of an aircraft.