Water Pressure Tank Sizing Chart

Notes to the wel rite water tank sizing chart.

Water pressure tank sizing chart.

Larger tank sizes will reduce pump cycles extending pump life and saving electricity. 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. A properly sized pressure tank ensures your household water needs are met and your pump is protected against short cycling. 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. 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 normal pressure spread for cut in and cut out is 20 30 p s i. 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.

Data based on a well rite water pressure tank. 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. Once the pressure in the tank meets the 60 psi threshold pump cut out pressure the pressure switch will signal the water pump to stop pumping ceasing the influx of water into the tank. You will want to choose a tank with the lowest volume capacity that is greater than or equal to the total required volume.

When choosing an internal bladder type water pressure tank take note of the operating pressure range of your well pump equipment. A pressure tank is an integral part of maintaining your well.