Morrison Bros. 244 Series 8 in. Flanged Emergency Vents – 8 oz/sq inch

Description

Emergency vents are installed on aboveground storage tanks as a code requirement. Emergency vents provide high capacity pressure relief if the tank is exposed to fire. When the internal tank pressure reaches the opening pressure of the vent, the weighted cover moves up on the center pin allowing air to escape. When the internal tank pressure falls, the cover automatically lowers back onto the body and is automatically reset.
CFH = Cubic Feet Per Hour @ 2.5 PSI

Features

Automatically resets after opening
Durable powder coated cast iron covers
Flanged mounting connection
CARB EVR models
Certified CFH flow capacities
Theft deterrent screens available

Construction Details:

Body: Aluminum
Cover: Powder coated cast iron
O-Ring: Viton A
Screen: 3 mesh stainless steel

Certifications
When properly sized for the tank, this vent will conform to the following requirements:

NFPA 30
30A
UL 142
ULC S601
API 2000
IFC
PEI RP200
California Air Resources Board Phase I AST EVR

Venting Guide
Venting Guide (PDF Download)