i'm fitting a home style heating and water system to my motorhome, a 12 volt eberspacher 5KW water boiler, a 20 litre twin coil calorifier (hot water cylinder with an extra coil to heat from the engine) 3 radiators, digital programmer, tank and room stats, and hopefully a 3 way valve to select hot water, heating or both to be heater when the boilers running.
But i just can't seem to find a 12 volt DC powered 3 way valve, the mid position type that's fitted to 99% of home central heating systems,
does anyone know where i can get one from?
and i know all about inverters, and that's not an option to run a simple valve, as it'd have to be powered all the time, and my 2 inverters in the van pull a fair bit of current when ideling, and take a few seconds to power up due to self checks (ones a 1600 watt modified sine wave that powers the microwave, central vacuum system and any phone chargers etc, that high a power uses about an amp when no load is being pulled, the others a 300 watt pure sine wave inverter that powers only the washing machine, being pure sine wave it pulls even more power than the big inverter when left powered up and not being used, and takes about 10 seconds to turn on due to complex self checks of the entire system)
So i really need a 12 volt powered 3 way valve, but where are they hiding???