Sprinkler System Calculator & Parts List Generator
Using this App
Sprinkler System Planner is a tool designed to assist a sprinkler system installer with calculations, and a list of the likely parts and quantities. The goal for this app is to help the installer save time and money. Double check calculations and quantities before making your purchases.
The calculations in this app are based on using schedule 40 PVC pipe and fittings.
Backflow
Main Line Available Water Supply
10 GPM
Enter the available water supply for irrigation. Available water supply is rated in gallons per minute (GPM).
Available Water Percentage
70%
Percent used is the maximum amount of water you desire to use for irrigation. While you can, in theory, use 100 percent, it is recommended that you use 70-80 percent. It is, after all, nice to have water available for things like showering, washing dishes, etc.
System Pressure (PSI)
55 PSI
PSI (pounds per square inch) should be measured from a tap or hose bib on the property.
If no pressure is specified, the system will use 55 PSI as the default value.
Main Line Configuration
This is referring to the main line that supplies the house / property.
This selection is used to help determine the best way to connect the stop and waste to the existing water supply.
Sprinkler Timer
Stop & Waste Valve
This is a must in areas that have hard freezes. The stop and waste is a shutoff valve that drains the downstream water from a main line. It is generally installed at the point of connection that is leading to the sprinkler system (generally close to the meter or a building).
The weep hole allows water to escape when the valve is closed. Thus, a stop and waste is regularly installed at a depth that is sufficient to prevent freezing of the live side of the water main.
Valve Box Configuration
Valve Connection Style
Sprinkler Head Installation Style
Valve Box Configuration
Recommended for 1-4 valves
Most common for residential
Recommended for 2-6 valves
Master Valve Installation
Garden Spigot
Garden Spigots are a great source for large volumes of water to be supplied with a garden hose. They tend to have more volume and pressure than a regular garden spigot. The most common uses are filling a pool or hot tub quickly, and sprinkler system winterization (Access directly to the main line for blowing the system out with air).