53-yr-old Moog 21 servo valve still in operation

The Industrial Group of Moog Inc. recently declared Doug Bitner, Manager for the University of Saskatchewan’s College of Engineering Fluid Power Lab, the winner of its contest to find the oldest operating Moog servo valve. Bitner had submitted a video showing lab equipment running with a Moog 21 Series servo valve manufactured in 1963.

Moog launched the contest last September as part of a celebration of the 50th anniversary of Moog’s operations in Europe. According to Bitner, the University of Saskatchewan is noteworthy for having one of the few undergraduate fluid power labs in North America. The winning servo valve is part of a single closed-loop test system Bitner’s students and instructors use for aerospace and industrial experiments.

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