Rainwater Pressure Tank System

Pressure tanks store pressurized water that can be distributed to different areas. The tanks operate by using drops in pressure below a certain point to activate the pumps which replenish the water and raise the pressure. Pressure tanks help to elongate the pumps lifespan because they allow them to run when they are needed verses staying on. They also reduce water hammer instances because they help to keep the water in the irrigation lines at a constant pressure.

Pressure tanks are typically used in conjunction with private wells. The tanks provide consistent pressure to the home’s water system within a range of approximately 20 pounds per square inch (psi) and also act as reservoirs, holding extra water in the system. Most home water systems are set up so the pump turns on (cuts in) at 20, 30 or 40 psi and turns off (cuts out) at 40, 50 or 60 psi, respectively. There’s a diaphragm in the tank with pressurized air above the diaphragm and a water holding area below.