Morrison Bros 245-0800 AV 8" 8oz Lightweight Female Emergency Vent - Aluminum

This lightweight, spring-loaded emergency vent (pressure relief only) is used on aboveground storage tanks, as a code requirement, to help prevent the tank from becoming over-pressurized and possibly rupturing if ever exposed to fire. This vent must be used in conjunction with a normal vent. Correct application of this vent requires proper vent size and selection for the tank system in order to meet the specific venting capacity.

Materials of Construction
Body: Aluminum 
Cover: Aluminum 
Seat: FKM 
Bolt: Zinc plated steel