Frequently Asked Questions

GPM is an abreviation for gallons per minute. This is the measurement commonly used to determine your flow rate or amount of volume that a well, pump, or sprinkler is able to discharge.

PSI is a short abbreviation for pounds per square inch or is commonly referred to as "pressure".

Each sprinkler head on our site has a published performance chart from the manufacturer stating how much flow and pressure it takes to operate each size sprinkler and lists the performance data of the sprinkler at a chosen flow rate and pressure setting. Most sprinklers will operate in a wide range of flows by simply adjusting the nozzle size to match the flow capability that your well or pump provides. Pressure requirements vary and typically as pressure is increased, the performance pattern of the sprinkler will increase. Your servicing pump dealer should be able to tell you what your well or pump's capability is and then you can match your pump's capability to a sprinkler performance chart of your choosing.

There are several points to consider when ordering sprinklers: First, it is important to choose a sprinkler that will match your water source's capability. You will need to have an idea of the water source's output in terms of gallons per minute and pressure. All sprinklers have a range of output specified by the manufacturer. Second, determine the area size to be watered and choose a sprinkler that will effectively cover your area based on the performance characteristics of the sprinkler and your water source's output capability. Matching sprinkler size and capability to your water source is critical to achieving good sprinkler performance.