I've been snooping on various plumbing plans and I wanted to set out my own for criticism/constructive feedback. Disclaimer 1: I'm a complete novice when it comes to plumbing so go gentle. Disclaimer 2: It's a long post, sorry. Disclaimer 3: I haven't drawn a plan yet, which would perhaps make things clearer. If anyone struggles then I'll upload something this weekend.
We are 2 adults and 3 young kids (under 4yrs). Currently live in BC, Canada - Note all prices are CAD and it's harder to get stuff online here, hence the overkill on Amazon.ca. We will be full-timing and hoping to go for periods of perhaps a week off-grid. Will hopefully be hopefully in warmer climates - heading south of the border and further beyond the States in the next few years.
As simple people, we are trying to be simple - 2 x shower (one external), 1 x tap/sink. Compost toilet, no black water. 100 gal fresh internally mounted, smaller grey externally on the underside. LPG hot water.
I'm going to get this
city water/inlet plate and mount it at the back of the bus on the driver side.
Gravity inlet feed to the top of the 100 gallon fresh water tank
, which will be framed in directly on the subfloor below the master bedroom at the back of the bus (behind the rear wheels arches). Vent from fresh tank to the plate.
Gravity outlet from bottom of fresh tank to the SHURflo pump
, via a strainer
Pump to an accumulator tank
(to even out the flow).
Do I need a pressure gauge at this point to check the pump output pressure?
One way 'check' valve
to the rest of the system (probably going to use push-to-fit/sharkbite connections throughout the system for ease/laziness - judge away).
For city water, a regulator
then another check valve to the rest of the system.
Join both lines using a T connection
Ball shut off valve
I'd like the strainer, pump, accumulator tank, regulator/gauges and shut-off valve to be easily accessible, so potentially another access hatch on the outside of the bus.
Split using a second T connector, one line to cold water input on each of the showers + tap (2 more Ts and an elbow).
Other line to LPG On demand Water Heater
(exact one TBC) vented through the roof of the bus.
Hot water outlet from this to the showers + tap (2 more Ts and an elbow).
Drains from the interior shower and the sink, trap, to the 75 gal (?) grey tank, underside mounted using angle iron frame. Tank will need to be vented (?) and also drained
on the outside.
All piping will be 1/2" PEX, something like this
. Hot water lines will be insulated where possible, all PEX secured and nail guards used.
- Did I miss anything obvious?
- I saw that someone suggested putting shut off valves around any component which might need fixing - i.e. the pump. Would that mean putting 3 in the access hatch - before & after the strainer/pump/accumulator and then another after the T connector to combine city/pump lines?
- This might sound stupid but can I/do I want to put the LPG water heater internally or externally? We are going to have a propane heater in the living space and will have a 12v detector anyway. Vented properly etc.
- Anyone got a good suggested ratio for fresh:water sizing?
- We are considering having an additional large charcoal filter drinking water tank in the kitchen, to prolong the boondocking by exploiting natural water sources - something like this
. Does anyone have any experience with these?
- Vent for the grey tank - Any reason why this can't just be a little vent situated on top of the tank and vented to the side of the bus?
- Given that the drain for the fresh water will just be a winterizing thing, can it just be a simple gravity fed valve like this
or should I go for a ball shut off valve?
Tank monitors - Looking at the Seelevel 2 tank system
but $300 is hard to take. Any other suggestions?