Heater Valve

Brought a new Ford VA/Transit one (£4 with my ebay £10 coupon!)....its electrical operated.

This is a neat item for me, cause by the looks of it, it serves two functions...When the valve is closed the water will still circulate down the centre pipe...So clearly it operated by the thermostat bypass line. This means the water will either go via the bypass when its closed or through the heater when open, or through both when semi open.

I think I will add a remote thermostat, so this can be plumbed in to the bypass line via the two connectors on the right, the left connectors go to the heater...

Again this system and the remote thermostat will work with either EWP or stock water pump.

Only thing I have to do, and have done is it move the swirl pot right up to the end of the new water rail....

The remote thermostat will go between the swirl pot and the radiator in the top hose...

Obviously the swirl pot has a return line to the header tank which blows into the air space at the top, as such the swirl pot must always be under PRESSURE with water flowing out the head, so water flows OUT the small pipe on the top into the header tank.... If I place the remote thermostat before the swirl pot, when the thermostat is closed the swirl pot will be under suction, not pressure! So it would suck the air from the top of the header tank and cause all sorts of problems, till the stat opens and it switches from suction to pressure flow! No issues with the swirl pot before the remote thermostat though...

Not quite sure where the heater hosing/valve will go or routed, another lengthy session of head scratching.



I'll probably chop this thing up a bit, just leaving the flange the foam seal is in, drill a few holes and add a mounting plate, cut off those plastic legs on the right...Not sure if this is on/off or scaled in action...Not really bothered either, I usually want heat or no heat. Next job is finding that out.