Vented Loops
![Vented Loops Vented Loops](https://www.groco.net/media/catalog/category/HVL_Series_Main_Image.jpg)
THE CONCEPT
- Made in the USA
- 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.