Plumbing – Can i install a water pump to an overhead tank having a single piping system

plumbing

enter image description herei have an overhead tank on my roof where it is filled and drained by single pipe system. but the pressure is too low at the different outlets (kitchen, bathroom, toilet). i want to connect a pump in this system. is it feasible?

Best Answer

Is the tank a pressure tank or a non-pressure tank? If it is a pressure tank, you could move the tank from the roof to the supply line just after a newly installed pump. Add a pressure switch and a Domestic PRV. Location of the parts would be as follows: 1) supply line; 2) domestic water pump; 3) pressure gauge; 4) pressure shut off switch; 5) pressure tank; 6) domestic PRV; 7) domestic water line. The pressure switch would be set at approximately 50/60 PSIG. to cycle the pump and the PRV could be set at 40/50 PSIG. Note; this is the same set up as a well system. The PRV could be eliminated if you desire. Also the pump should be for domestic use (bronze or stainless steel). If the tank is a non-pressure tank, adding a pump would be difficult. I hope this helps. If the tank is a non-pressurized type, you could , if you had a separate fill line, add a pump, small expansion tank, and pressure switch to the delivery line, set the pressure switch for the desired line pressure. The pump would maintain a constant pressure on the supply line of say 40 to 60 PSIG or whatever pressure you desire.