Groco Vented loop, full flow, bronze, 1" barbed hose connections. Oversize vent valve is virtually clog-free, and can be easily removed for inspection and cleaning. Mounting hardware included.

*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.
*The oversized vent valve can easily be removed for inspection or cleaning without tools.
*Mount Hardware is included.