I've copied and pasted this over from another forum I'm on, but somebody may find it worthwhile if setting up a shower system.
This is a project I've wanted to do for a while as I am over using the portable 12 volt camp showers and their pissy little pumps!
Excuse the poor pics, but it's a ****ty day outside and I'm working in an open carport.
I've mounted an 11.4lpm Shurflow pump under the bonnet. This is in the spot where most would have the 2nd battery. I fabbed up a bracket to mount the pump to and used existing bolt holes on the firewall to attach it.
The pump intake and outlet are plumbed to a couple of quick connects in behind the spotlights using heater hose and I've mounted a waterproof on/off switch to the bullbar.
Next step was to head off to Bunnings and grab a section of Gal pipe wth 15mm threaded ends and some other bits and pieces for connecting it all up. The plastic mixing tub is from Masters and is an ideal size for standing and showering in, it's also large enough to collect most of the water used while showering.
I just used what I had laying around to make up a temporary bullbar clamp. This is just a hose clamp and a small quick fist rubber clamp. Not ideal but it will do until I come up with something better. I'll probably grab some kind of saddle clamp to use when I find one that suits. But for now this works surprisingly well and is quick and easy to throw the shower pipe into.
The small bung in the quick connect is to keep dust out when not in use. I had trouble finding any kind of off the shelf bung, so these are just quick connect hose joiners filled with silicon and then cut down to suit.
The finished product works extremely well and when I throw the shower tent up its at just the right height for the shower head. In the plastic tub I have a 40 or 50? Micron screen mesh filter, sorry can't remember the exact screen size. At the moment we just recirculate the shower water and by sloping the plastic tub we can have a great shower with 3 or 4 litres of water. Obviously if near a water source then recycling water isn't such an issue.
For heating the water, we are simply using the billy and adding it to the tub. I've thought about using a Glind or Helton style heat exchanger, but as we will probably buy a camper down the track I may just leave as is and eventually use a portable gas unit like the Joolca etc.
The pressure out of this is as good as a home shower!
So now I am a happy camper, as there is nothing quite like a decent shower every few days when on the road for extended periods. Most of the time we are solo so won't bother with a shower tent, but for times when we need the privacy it's an easy job to set it up under the shower head. I'll also throw a quarter turn ball valve inline, so we can regulate the flow. It only takes a couple of minutes to set the shower up and by the time water has boiled we are good to go! The pipe and shower head take up bugger all room and the plastic tub gets other stuff stacked in it when traveling.