P42 aft toilet intake hose
I have a 1991 Passage 42, so the configuration of the hose in question could be different than yours. The anti-siphon loop on my boat is located inside the engine compartment, starboard side, just outboard of the cockpit scupper hose. It is affixed to the wall of the engine compartment. The aft toilet intake hose is in two pieces. One piece connects with one end to the toilet and the other end to this anti-siphon piece. (The way I usually replace it is to poke four holes in the ends of both old hose and new hose and "sew" them together with seizing wire, then pull the old hose out. It fishes the new hose through in that fashion). The second piece of intake hose is connected to the seacock and the other opening on the anti-siphon loop.
If you have trouble viewing the anti-siphon loop from the main engine compartment door, try looking in through the engine compartment door in the aft cabin. The anti-siphon loop will be just to the starboard side, and a bit forward, of the inverter.
Hope this helps.
