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API 2521

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API 2521 Use of Pressure-Vacuum Vent Valves for Atmospheric Loss

standard by American Petroleum Institute, 09/01/1966

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Full Description

Describes the use of pressure-vacuum vent valves to reduce evap loss of petroleum stored at atmospheric pressure in aboveground fixed-roof tanks and variable vapor-space systems. Also presents factors to be considered when selecting vent valves.

M00010060
2021-02-15
New product