Groco HVL-1500 Boat Marine 1-1/2" Hose Sanitation or Engine Exhaust Bronze Vented Loop

Groco HVL-1500 Boat Marine 1-1/2" Hose Sanitation or Engine Exhaust Bronze Vented Loop  Hose ID: 1-1/2" Oversized vent is virtually clog-free, and can easily be removed without tools for inspection. Allows air to enter to break siphon, but does not permit air and odors to escape! Cap is threaded 1/2" NPT to accept a barb fitting if you wish to vent overboard. Overboard venting is required if PVL or HVL series is used in an exhaust system. HVL and PVL series vented loops assure clog-free anti-siphon protection for sanitation or engine exhaust systems.  Material: Bronze Manufacturer: Groco  Model Number: Vented Loop Part Number: HVL-1500