Has anyone tried using the Hepvo waterless waste valve? I watched a video, through FMCA, today where they installed one of these on the galley sink and removed the factory installed P trap. The installation opened up quite a bit of area under the cabinet that was previously occupied by drain piping and a P trap.
Hepvo Waterless Valve is the website for the product.
is the link for a you tube video. The Hepvo website also has videos.