1st Thanks to Shirleycha  for her help. She always answer my questions and were very fast on answering my requests ;) The Product Looks very great. Didn't connect it yet (it's on going) but already open product, and look like very strong / Solid.  Will be installed  by the week Pressure gauge are to mount manually but already have teflon on it, so it's quite easy. There is no documentation (but we dont really need one), the only thing which i think should be added is a markdown of water flow (from left to  right or from roght to left, indicate in and Out for example)

good