It is usual to bypass the tank and pump and rely on town water pressure. If you connected town water directly to tank water would back flow and just come back out through the overflow pipe.
There would normally be a valve/**** in the vicinity of town water connection point.
__________________
Possum; AKA:- Ali El-Aziz Mohamed Gundawiathan
Sent from my imperial66 typewriter using carrier pigeon, message sticks and smoke signals.
Thanks for the info.
Back to the drawing board to insert another piece of hardware!
Just when we think the end is coming close for the build and for us to escape!
Veronica, I suggest you go and have a look at the plumbing set up at a caravan dealer or friend with a caravan - But yes you will need to add into your van's plumbing a separate fill point to water tank - If you don't, you will have to refill tank when it empties and you would need to use van's pump to get water - time consuming and draw on power.-, not being able to connect to mains supply.
__________________
Possum; AKA:- Ali El-Aziz Mohamed Gundawiathan
Sent from my imperial66 typewriter using carrier pigeon, message sticks and smoke signals.
Most caravans have 2 water inlets.
One is used to just fill the fresh water tank(s). This inlet is usually open (has a fitted cap to stop dust etc entering) and has an associated tank breather hose(s) close by. Water is pumped from the fresh water tank(s) using a 12v, 50psi pump. This pump will normally have a Non-Return Valve fitted to the pressure side (to stop mains water passing through the pump and entering the fresh water tank). The pump will supply water at approx 50 psi (suitable for the caravan plumbing).
The other inlet is for mains water. This usually has a clip-on hose connector. When on mains all the caravan plumbing will operate at city pressure, hence there is a requirement for a Pressure Reduction Valve (sometimes also has an included NRV). This is usually fitted in the line just inboard of the hose connector. This will reduce the city water pressure down to approx 50psi - many city supplies are at far greater pressure than 50psi. The danger of permitting the full city pressure into the caravan plumbing is that the pipes/fittings could burst and flood the caravan.
Veronica, you failed to tell us the make, model, and year of construction of your van. We thus can not advise where to find the mains water inlet for your van.
If you do not one of those, not all is lost. If you look on the RHS of the draw bar or under the RHS of the van you may see a piece of pipe or hose with nothing connected to it. The end of the pipe of hose may have a pipe style thread on it or it may have a male click on fitting. That will probably be your mains water inlet. Some vans may also have a hose tap that is used in reverse as a water inlet.
If you can not locate the filler then try ringing the person you received the van from. If you still can not find a HP inlet then fill the tank or tanks before your shakedown run. Carry a food grade water hose with you (do not use a garden hose, the PVC in these hosed exudes carcinogens into the water.) When you are i the park, ask around, someone will be able to find it for you. You can then slip down to the local hardware for any missing bits to attach the hose to
__________________
PeterD Nissan Navara D23 diesel auto, Spaceland pop-top Retired radio and electronics technician. NSW Central Coast.
Veronica, you failed to tell us the make, model, and year of construction of your van. We thus can not advise where to find the mains water inlet for your van.
She advised in opening paragraph she is building it.
__________________
Possum; AKA:- Ali El-Aziz Mohamed Gundawiathan
Sent from my imperial66 typewriter using carrier pigeon, message sticks and smoke signals.
Showing my complete ignorance here BUT when connecting to the water supply in a park, I presume I just fill my tank and use it?
OR is there a switch that allows flow to bypass the tank?
Building this at the moment.
HELP please
I dont have a open tank filler on my motorhome, I have a hose fitting and plug thhe hose on, turn it on and when the water flows out the breatther the tank is full. Dosntmatter where iam parked, I only have the tank water,, save a lot of worry with over presurising the system from a unknownhigh pressure mains supply
Showing my complete ignorance here BUT when connecting to the water supply in a park, I presume I just fill my tank and use it?
OR is there a switch that allows flow to bypass the tank?
Building this at the moment.
HELP please
I dont have a open tank filler on my motorhome, I have a hose fitting and plug thhe hose on, turn it on and when the water flows out the breatther the tank is full. Dosntmatter where iam parked, I only have the tank water,, save a lot of worry with over presurising the system from a unknownhigh pressure mains supply
Just be aware of some CG water pressure !! We just use the tank & pump now . Fixing burst connections is not my good point !! Usually
Under cabinets!!! Im no orangitan !! Lol