This will primarily be determined by the total flow rate and pressure you have available at your source. For example, you generally have a flow rate of 10 gpm from a ¾-inch spigot where you connect your hose. With your 10 gpm flow rate at your spigot, you could run two sprinklers at 5 gpm each.
To run more than one sprinkler off the same faucet, attach a 'Y' to your faucet and run a hose to each sprinkler. To run 2 sprinklers off the same hose line, attach a quick-connect to one branch of the 'Y' and a hose to the other branch.
The number of sprinkler heads per zone depends on the water pressure and flow rate of a system's water source. A traditional system may have a dozen rotors and 8 to 10 spray heads. An Irrigreen system only needs one sprinkler head per zone.
Typically, a zone can accommodate between five to ten sprinkler heads, with the understanding that each sprinkler head has a watering radius of about 15 feet. However, keep in mind that this is a general guideline, and the specific requirements of your lawn may vary.
We recommend that you use 40 psi when designing your system. Example: if your sprinkler heads use 2.5 gpm @ 40 psi, then a ¾” service (20 gpm) could operate approximately 8 heads at one time. Based on this example calculation, you would not have more than 8 heads on at one time.
1 of NFPA 13, which states that the distance from the sprinkler to the wall can be no more than one-half the allowable distance between sprinklers. The max distance between standard spray sprinklers in light hazard settings is 15 ft. (4.6 m) (with exceptions for light-hazard, combustible concealed spaces).
Branch lines shall not exceed eight sprinklers on either side of a cross main except as provided in subdivision E of this section. Each large area requiring more than 100 sprinklers and without subdividing partitions shall be supplied by feed mains or risers sized for ordinary hazard occupancies.
The average system uses approximately 15-16 gallons per minute, per station. Here is an easy formula to help you calculate the approximate amount of water you are using each month.
Excluding heads in combustible concealed spaces, all sprinklers in this category have 15 feet (4.6 meters) of maximum allowable spacing between them. Ordinary Hazard (15 ft). All sprinklers in these environments have a 15-foot (4.6-meter) maximum. Extra Hazard (12-15 ft).
Daisy chain connectivity
Multiple sprinklers can be joined to increase coverage distance. Look for Flow through connection feature on the sprinklers to join multiple sprinklers.
Think of a sprinkler valve like a sink faucet; if you only turn the knob a little bit, the pressure will be low. If you turn the knob all the way, the pressure will be much higher.
Ordinary Hazard 1 and 2: Coverage area of 130 square feet per sprinkler head; 15-foot distance maximum between sprinklers. Extra Hazard 1 and 2: Coverage area of 90-130 square feet per sprinkler head, based on certain factors; 12-foot distance maximum between each sprinkler head.
This will primarily be determined by the total flow rate and pressure you have available at your source. For example, you generally have a flow rate of 10 gpm from a ¾-inch spigot where you connect your hose. With your 10 gpm flow rate at your spigot, you could run two sprinklers at 5 gpm each.
For the controllers HC, PROHC, HPC, you can only run a single zone at a time based on the power output available. Running multiple zones at once is usually not possible due water-pressure and flow limitations at residential properties.
It is ideal to water lawns about one inch of water per week. To determine how long you need to water to get one inch, place a plastic container in your yard and set a timer. On average, it will take 30 minutes to get a half inch of water. So, 20 minutes, three times per week will give a lawn about an inch of water.
A typical lawn needs about an inch of water per week, equating to two 30-minute watering sessions.
On average, homeowners might see a 30% to 60% increase in their water bills during peak irrigation months. For a $100 monthly water bill, this could mean an increase to $130 to $160. To minimize the impact: Use efficient irrigation systems.
This is where you need to break out your calculators! Or, if you prefer, simply leave the irrigation design up to an installation professional, so you can be guaranteed head-to-head coverage. Typically, though, a sprinkler system zone will boast 5 to 6 rotor heads and/or 8 to 10 spray heads.
Cross Mains The pipes supplying the branch lines, either directly or through risers. Feed Mains The pipes supplying cross mains, either directly or through risers. Risers The vertical supply pipes in a sprinkler system.
Accurate calculation of sprinkler heads per zone is crucial for a healthy lawn. Too many heads can lead to overwatering and high water bills, while too few can cause dry spots. Proper zoning ensures every part of your lawn gets the right amount of water, which is both cost-effective and environmentally friendly.
NFPA 13's rules for sidewall heads closely resemble those for pendent and upright types. Those guidelines, found in sections 10.2. 5.4 (pendent and upright) and 10.3. 4.4 (sidewall), require 6 feet of clearance between heads.
In the spring and fall, sprinklers should run a few times a week for short intervals (no more than 15 minutes per zone). During summer months, when temperatures are hot and dry, sprinklers should run longer (up to 30 minutes per zone) depending on how much sun exposure the area receives.