Internal self-closing stop valve

Internal self-closing stop valve means a self-closing stop valve designed so that the self-stored energy source is located inside the cargo tank or cargo tank sump, or within the welded flange, and the valve seat is located within the cargo tank or within one inch of the external face of the welded flange or sump of the cargo tank.

Source

49 CFR § 178.320

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Scoping language

Definitions. For the purpose of this subchapter:

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