At the moment, the rainfall collected from a roof of about 150 m2 is wasted through a 110 mm PVC drain pipe.
Is it possible to make a siphon out of 110mm PVC pipe where the maximum water height pressure would be 3.5 m? (it could be only 1m if the pipe is rerouted differently but less desirable because of the space invaded).
I.e. can the PVC joints welded with the usual PVC glue withstand a 0.35 kg/cm2 pressure?
If so, I could divert the drain pipe into an existing water reservoir where rain water from other roofs of the house is collected.
If PVC pipe is not advisable for this purpose, what other inexpensive materials can be considered for this situation?
Of course, I would have to place a drain/access point at the lowest point of the siphon to clean all the debris carried by the rain water. That, in itself, is an advantage because it means that the water from that part of the house would be always mostly sediment and dirt free and can pour directly into the water reservoir.
Plenty of pine tree needles, sandy dust and other debris can fall on the roof. Would there be too much risk of clogging? A diverter to gravity discharge could be fitted to prevent that.
Thanks,
Antonio.