Firstank® Water Pressure Tanks
Pressure tanks, which also act as reservoirs for the home, are generally set to keep pressure within 20 pounds per square inch (PSI) of your starting and stopping parameters. For example, most homes have pressure of 20 PSI to 40 PSI. If the pressure drops below 20 PSI, the pump kicks on and brings the pressure back to 40 PSI before cutting off again.
Because the tank acts as a reservoir, it allows water to be drawn from the tank without the pump cycling on and off each time the water is turned on. This ultimately protects and prolongs the lifespan of the pump. Pressure tanks also reduce instances of water hammer as they reduce air in the pipes and control the pressure of the water.
Gallons per hour (GPM)
When choosing a pressure tank you will need to know the gallons per minute (GPM) – or if they ask for gallons per hour (GPH) just multiple that number by 40 – your pump pushes water through your pipes. You’ll also need to count the number of plumbing fixtures, including outside spigots, the system needs to service.