Use of Pressure-Vacuum Vent Valves for Atmospheric Loss
NORMA vydána dne 1.9.1966
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
Kategorie: Technické normy API
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