Water Pressure Tank Sizing Chart

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

Water pressure tank sizing chart.

A pressure tank supplies water as the pressure drops from 60 to 40 psi. Notes to the wel rite water tank sizing chart. A properly sized pressure tank ensures your household water needs are met and your pump is protected against short cycling. 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.

There are no disadvantages to having a larger well tank. Larger tank sizes will reduce pump cycles extending pump life and saving electricity. Join john woodard our master water specialist. A pressure tank is an integral part of maintaining your well.

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. The normal pressure spread for cut in and cut out is 20 30 p s i. At 40 psi the pressure switch starts the pump the pump fills the pressure tank to 60 psi and the pressure switch shuts off the pump. 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.

This is called a cycle. 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. 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.