Measuring Your Flow Rate - You will need to accurately determine the flow rate of your pump into you pressure tank to select the correct model SandMaster (pump ratings are not representative of the actual flow rate - you will need to measure it to select the correct sized unit).
1) Immediately after your pump shuts off, open the faucet between the pressure tank and the house (make sure no other water is running), run water into a container and record the Volume (gallons or liters) of water it takes for pump to start up again. You may have to refill container several times.
2) Record length of Time (in minutes) the pump runs before shutting off again.
3) Divide Volume by Time to determine the actual flow rate (gpm or liters/minute). Select your SandMaster model accordingly.
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