Bonjour,
Can you give us a site which has it in photo with explanation STP? And where to buy it + price ??? Thank you
well in fact, it is not a "device", or a "product" (material) that we buy ... but a "principle", a "system" of application ...
water must pour out
falling" to have a "load break" or "air gap" (mini 5 cm)
between the outlet of the city water supply pipe (make-up) and the maximum water level (overflow) in the make-up tank into which the pump will draw the city water if more rain water available ..
so as not to have physical contact between the city water supply pipe and rainwater or its circuit ...
yes, but, once it has passed ....
I can see a tap in the garage that we connect with a garden hose to the other circuit, between 2 inspections
well .... everyone cheats if he wants and as he wants ....
but it's still a purely personal matter .. !!
If it is that for the water of the toilets, the simplest is still to put a new small pipe which goes from the tank (or the pump) to the reserve of the flush of the toilets (garden hose 16 or 20 mm). The tanks of the toilets plan to be able to put a float system on the 2 sides and at home I put 2: when the rainwater tank is full, I close the water tap of the tank coming from the network, when there is no more water I open it. That's all !
example which seems to me to be the simplest and the most relevant .... in this case where it only concerns WCs for indoor use ...
cordially
well hello to you !! ...