Every pump has a pump curve or performance curve--a graph of the overall performance capabilities of your pump. A pump curve may also be displayed in a chart format and can provide the same information.
Either way, a pump curve or performance chart displays a pump’s ability to sustain a certain flow rate (gpm) at a specific pressure (psi).
Two of the most important pieces of information to know when researching and purchasing sprinklers and hoses are the water pressure and the flow rate at your spigot.
The specifications for sprinklers explain how much pressure you’ll need to run it properly, as well as at what flow rate. While finding these numbers is more difficult when using a large hose or if you’re using a high-powered pump, it’s easy when you’re using a garden hose.