API 2521

Use of Pressure-Vacuum Vent Valves for Atmospheric Loss

NORMA vydaná dňa 1.9.1966

The information about the standard:

Designation standards: API 2521
Publication date standards: 1.9.1966
The number of pages: 13
Approximate weight : 39 g (0.09 lbs)
Country: American technical standard
Kategória: Technické normy API

Annotation of standard text API 2521 :

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. See more