NASA NTRS · 19670000098
Toroidal ring prevents gas ignition at vent stack outlet
Abstract
Torodial ring welded to the vent stack outlet prevents static discharges which ignite combustible gases in a venting system. The ring inhibits the flow of current by removing the cause of turbulence characteristics of a sharply defined vent exit.
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Spring, T. R.. 1967-04-01. Toroidal ring prevents gas ignition at vent stack outlet. https://ntrs.nasa.gov/citations/19670000098
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