Water Pressure Tank Sizing Chart

A pressure tank is an integral part of maintaining your well.

Water pressure tank sizing chart.

Join john woodard our master water specialist. When choosing an internal bladder type water pressure tank take note of the operating pressure range of your well pump equipment. Pressurized well tanks extend the lifespan of your well pump by preventing rapid on off cycling of the pump and maintaining water pressure throughout your home. Larger tank sizes will reduce pump cycles extending pump life and saving electricity.

With the water pump off the pressure in the tank will remain at 60psi until more water in the house is used draining the tank once again. The normal pressure spread for cut in and cut out is 20 30 p s i. By reviewing the chart below you can get a general capacity of water you will get out of a tank based on your cut in and cut out pressures. To select the minimum size tank count the fixtures inside and outside your home including showers appliances toilets etc and refer to the chart below.

There are no disadvantages to having a larger well tank. Most bladder tanks work by turning a pump on cut in a low pressure and by turning a pump off cut off at a higher pressure. The figure that is calculated on line 7 is the total tank volume required based on the given design criteria. See example below with this information in hand you can refer to the flexcon sizing charts below to select the proper tank for your application.

A properly sized pressure tank ensures your household water needs are met and your pump is protected against short cycling. You will want to choose a tank with the lowest volume capacity that is greater than or equal to the total required volume.