Moeller Anti-Siphon Valve – 3/8″ Barb, 1/4″ NPT – Aluminum.

Anti-siphon valves are required by Federal Law and the USCG on all permanent fuel tank installation. Use 15 (Brass) calibrated for HP 200 & above and 30 (Aluminum) calibrated for HP below 200

• Delivers Coast Guard/industry standard anti-siphon protection on all gasoline-powered boats.
• Combines anti-siphon protection with a convenient hose barb design.
• NOT TO BE USED IN POTABLE WATER SYSTEMS