Osculati anti-siphon device designed for installation in marine toilet lines. The loop shaped fitting prevents water from running back down the hose line towards the toilet or waste tank, whilst allowing it to flow in the desired direction.

This anti-siphon loop features 2 mounting holes for wall mounting. It is suitable for a wide range of hose sizes: 13mm, 16mm, 19mm, 22mm, 25mm, 28.5mm, 32mm and 38mm.