Attwood Marine - Fuel Tank EPA Compliant w/ Gauge - 3 Gallon - 8803LPG2. Fuel tanks are constructed of multi-layer, high-impact molded platic. Multi-layer tanks are the most robust and durable low-permeation tanks available and meet the functional and safety requirements of the harsh marine environment. Automatic vacuum valve ensures proper fuel flow and eliminates the need for manual vent. Compatible with 1/4" NPT fittings. 2-year warranty.. Features:. Size - 3 Gallons. With Gauge. Compatible with - 1/4" NPT Fittings. 2-Year Warranty. Automatic Vacuum Valve