Description
The FIG 244OF is a flanged, pressure-relief-only emergency vent for aboveground storage tanks, required by code to protect against over-pressurization during fire conditions. It must be used alongside a normal vent. Available in sizes 4″” to 10″”, with various seal and screen options, and CARB EVR approved variants.
Features
- Pressure relief only — must be used in conjunction with a normal vent or pressure-vacuum vent
- Available sizes: 4″”, 6″”, 8″”, 10″”
- Pressure settings: 2.5 oz/sq.in. (10″” only), 8 oz/sq.in., or 16 oz/sq.in.
- Seal options: standard O-ring or FKM B O-ring (EVR variants)
- Screen option available on 4″”, 6″”, and 8″” models
- Flanged kit option available: includes vent, flange adaptor, gasket, and hardware
- CARB Phase 1 EVR approved variants available on select models
- UL Listed and ULC Listed
Applications
- Aboveground storage tanks (AST) for petroleum and flammable/combustible liquids
- Tanks built and tested to UL 142, NFPA 30 & 30A, and API 650
- Fuel storage facilities, bulk plants, and service stations
- Applications requiring flanged vent connections
- Applications requiring compliance with IFC, NFPA, PEI, UL, or ULC standards
Certifications & Approvals
- UL Listed: UL-2583 (except 10″” 2.5 oz model)
- ULC Listed: CAN/ULC S601, CAN/ULC S602, CAN/ULC S652
- CARB EVR: California Air Resources Board Phase 1 Enhanced Vapor Recovery (VR-402) — select models
- Code Compliance (when properly sized): International Fire Code · National Fire Code of Canada · NFPA 20, 30, 30A, 31, 37, 110 · PEI RP200, PEI RP800 · UL-142, UL-2085, UL-2244
