@sungo I help out my dad at the family farm every autumn to blow out the irrigation lines and "winterize" the system. He is in his 80s and though in great health for his age it's a difficult task to do by himself, manually connecting up an air compressor and turning drain valves and walking back and forth between the house and the various locations to switch the zones etc.
I just want to swap out that 1980s timer system and put SOVs on the drains and just make it all run off his mobile...