Vented loops are most commonly used for inlet and discharge pipes on toilet installations below the water line. or to manage situations where the heeling of the boat puts the installation below the waterline temporarily.
Our aquavent is moulded in a glass reinforced nylon composite, with a silicon bleed valve. The bleed valve allows air into the system to stop syphoning yet seals effectively when water or fluid pass through.
Available for 38mm bore hose to fit the discharge side of most marine WCs or for 19mm bore hose to suit the inlet side.. 25mm size available to special order.

The advantage with our vented loops over others is that the internal diameter is the same throughout the bend - meaning there is no restriction.