I have a RHD Sprinter. The greywater tank will be installed underneath, opposite the sliding door.
I want to drop drains through the floor on both sides close to the front edge of the rear wheel arches. On the drivers side, it seems I can simply run the drain pipe through the floor, then through existing 38mm frame holes to the tank location, without losing much height.
However on the passenger side, I will need to somehow get the drain across, avoiding the exhaust and driveshaft. I could use flexible hose, but tucking it up is going to create valleys which hold water, which increases the risk of freezing and blockage. The only frame holes I see to traverse across seem too small, and are partially obstructed by brake lines. I considered running through the frame, but there’s not really a usable exit hole, other than the one I plan to use on the driver side, and i seems I’m not allowed to drill the subframe.
I’m looking for completed, tested examples of how others have routed their drains under the vehicle to achieve this, that I can apply to my build. Photos would be fantastic.
Suggestions so far have been to install a grey tank on both sides, and either have two dump drains, or connect both tanks to a single dump drain, essentially making the drain the lowest point under vehicle.
I’m also considering running the sink drain above the floor, joining to the bathroom drain above the floor - which complicates my build but does address the problem.
Thanks.