Avion truck campers - Hundreds of photos
Without going into too much painful detail, we had a mishap several week-ends ago. While working with sand bag crews on the Mississippi River, the truck and camper fell into the flood waters as a road...
Forum Discussion
A couple of things.
If you're just pumping greywater, a shower pump like the Whale Gulper 220 is going to be a better choice than a macerator. Lighter, smaller, less power, faster flow, more reliable.
For blackwater you need a 3" gravity discharge line to deal with clogs. The marine guys get away with 1.5" because they use toilets with a 1.5" discharge and macerator features of their own instead of rv toilets with a 3" discharge. Sure you can use a 1.5" line to the macerator and it will usually work but if your grandkid flushes a great big ball of TP or a pair of underwear then what.
With that said the space taken by 3" plumbing is considerable and the availability of things like 3-way valves in this size is limited; what is out there is high buck. So I would suggest keeping it simple. You can use a short section of dump hose to connect the macerator inlet to the gravity drain and save yourself some complicated valving and piping. At which point you might want to use 3" cam lock fittings for your gravity dump connection instead of the more common valterra bayonet as the cam locks do not require turning the hose to lock it.
If you're just pumping greywater, a shower pump like the Whale Gulper 220 is going to be a better choice than a macerator. Lighter, smaller, less power, faster flow, more reliable.
For blackwater you need a 3" gravity discharge line to deal with clogs. The marine guys get away with 1.5" because they use toilets with a 1.5" discharge and macerator features of their own instead of rv toilets with a 3" discharge. Sure you can use a 1.5" line to the macerator and it will usually work but if your grandkid flushes a great big ball of TP or a pair of underwear then what.
With that said the space taken by 3" plumbing is considerable and the availability of things like 3-way valves in this size is limited; what is out there is high buck. So I would suggest keeping it simple. You can use a short section of dump hose to connect the macerator inlet to the gravity drain and save yourself some complicated valving and piping. At which point you might want to use 3" cam lock fittings for your gravity dump connection instead of the more common valterra bayonet as the cam locks do not require turning the hose to lock it.
