Plumbing

Faucet

We ended up with the Kraus Bolden 18 inch faucet. We opted for this over the Sellette to ensure clearance to the overhead storage.

KRAUS Sellette™ Single-Handle Pull-Down Sprayer Kitchen Faucet.

Storage

We opted for 3 Scepter brand jerry cans. These are Nato dimensions and pretty standard. They will be held fast by these tie downs installed on 8020 and these cinch straps attached to the tie downs.

Graywater

The sink will drain outside the van to a temporary collection bottle where needed (e.g. and empty milk jug). A fitting like this should allow connection of the sink drain to plastic tubing. Apparently sink drains are pretty standard with 1.5 inch female NPT thread.

Sink

We selected the smaller varient of the Ikea Norrsjon sink.

Pump

We considered the following 24V water pumps:

We opted for the Shurflo Aqua King II Supreme. It should have plenty of umph for sourcing a sprayer/shower. It was backordered at most places, we ordered from AnchorExpress.com, who had the best price, but some questionable reviews and unclear stock. We'll rant if it goes south.

Reverse Osmosis

Eventually, given the amount of time we spend ocean side, it would be advantageous to have an RO desalinator. DIY is doable. The cost is the high pressure pump and drive motor, but integration looks doable.

Tank Level Monitoring

This product looks like the cheapest out there and would be easily integrated with a esp/pi/arduinio.

Connections

Supply

Jerry cans will have 3/8 ID reinforced PVC hose NSF 51 COMPLIANT 3/8 ID reinforced PVC hose that runs from the bottom of the can to a 3/8 inch barbed panel mount dripless quick disconnect insert. The insert will be installed in a 1-1/4 inch hole cut into the larger jerry can cap (over the pour spout).

The mating quick disconnect body has a 1/2 ID barb and connects with 1/2 ID reinforced PVC hose NSF 51 COMPLIANT 1/2 ID reinforced PVC hose to a 1/2 inch barb elbow and two 1/2 inch barb tees that form a manifold that join the lines from the three jerry cans.

The manifold connects to the pump inlet with 1/2 ID reinforced PVC hose. This connection is barbed on both ends.

The pump outlet connects with 1/2 inch hose to a 1/2 barbed tee.

The 1/2 inch barbed tee connects via two 1/2 ID reinforced PVC hoses to two brass 1/2 barb to 1/2 inch FIP fittings. These two brass fittings are connected to two brass 1/2 in MIP to 3/8 in male compression fittings.

Those last two fittings connect to the faucet hot and cold supply lines, which are 3/8 female compression connections.

We'll use stainless hose clamps.

Drain

The sink drain connects to a 1-1/2 inch FIP to FIP 90 degree elbow that in turn connects to a 1-1/2 to 1 inch reducing nipple that in turn connects to a 1 inch FNPT to 1 inch barb adapter.

1 inch ID reinforced PVC hose runs from the above barbed connection overboard through the 1.5 inch hole added though the vehicle floor.

UPDATE: We didn't like how much volume the 1 inch ID line consumed. Thus we are shifting towards 1/2 ID material:

The sink drain connects to a 1-1/2 inch FIP to FIP 90 degree elbow that in turn connects to a 1-1/2 to 1 inch reducing nipple (MIP) that in turn connects to a 1 to 1 inch FIP connector that in turn connects to a 1 to 1/2 inch reducing nipple (MIP) that in turn connects to a 1/2 MIP to 1/2 inch FIP 80 degree elbow that connects to a 1/2 inch FNPT to 1/2 inch barb adapter.

1/2 ID reinforced PVC hoseruns from the above barbed connection overboard through the 1.5 inch hole added though the vehicle floor.

BOM

The BOM for the plumbing materials is in this google spreadsheet.

Tube Sizing

We did some very basic calcs based on the pump's dry prime capability vs water column weight to make sure it could pull the amount of water from the three jerry cans. That was the basis for selecting 3/8 ID tube for the can bottom to manifold. Not sure if it would have been a problem, but just in case. Those are also in the spreadsheet.