Description
ATTWOOD 1.00″ Fill Limit Vent Valve with GRV Communication – 99FLB100-1 is an Attwood marine fuel-system component. Fuel-system parts must be selected by system architecture, hose/tank connection size and emissions configuration; this part should not be substituted solely by appearance.
Key Features
- System-specific marine fuel-control/vent component
- Use only in the fuel-system architecture and hose/tank configuration specified by Attwood
Specifications
- Manufacturer: Attwood
- Manufacturer Part Number: 99FLB100-1
- System: VaporTec / SecureStop
- Shut-off height: 1.00″
- Function: Sets tank full level and limits liquid fuel entering vent/canister plumbing
- Fuel: Compatible with ethanol-blended gasoline
- Tank compatibility: Plastic and aluminum tanks
- Gasket: Integrated high-performance tank gasket
- Standards: Designed for USCG CFR 33 / ABYC H-24 fire-test and CARB/EPA system requirements
Installation & Compatibility
Fuel-system work requires leak-free connections, correct vent routing and ignition-safe service practices. Verify the vessel’s certified fuel-system layout and Attwood installation documentation before replacing valves, vents, deck fills or carbon-canister components.
Selection Note
Do not alter a certified evaporative-emissions fuel system without confirming the replacement component matches the original system architecture.


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