5 Ways to Save Water with Rain Bird Rotors · The Cost of Water Over-watering creates problems that...
Transcript of 5 Ways to Save Water with Rain Bird Rotors · The Cost of Water Over-watering creates problems that...
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5 Ways to Save Water with
Rain Bird RotorsDavid Perl
Product Manager – Commercial RotorsFebruary 17th, 2010
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Agenda
The Cost of Water
Causes of Water Waste
Background Information and Definitions
5 Ways to Save Water With Rain Bird Rotors
Complimentary products
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The Cost of WaterOver-watering creates problems that increase costs:
Leaches nutrients from the root zone requiring the application of additional fertilizerCauses fungus and attracts pests Major cause of plant death Adds additional time and labor to maintain siteRunoff damages hardscapesand be an expensive liability Poor public relations
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A Focus On Water Efficiency
Water prices
Restricted / regulated
usage
Environmental concerns
Over-watering causes
plant death
Poor public relations
Stretched spacing
High trajectory and wind drift
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Leading Causes of Irrigation Water Waste
Improper design
Improper installation
Improper pressure and
flow for nozzle
Leaks
Water applied at too
fast a rate for soil type
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What is Distribution Uniformity?
How evenly the irrigation system applies water over the intended irrigation area.
Question: What will the user do about that brown spot?
Depth ofWater
Answer: Irrigate until it’s green – and over-water the rest!
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How to Achieve Uniform Distribution
Good system design and sprinkler spacing
Optimal operating pressure
Minimize effects of wind
Use high-efficiency nozzles
Regular system maintenance and adjustment
Stretched spacing
High trajectory and wind drift
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How to Measure Even Distribution
Physical audit / Catch can testing
Modeling / SPACE software published by Center for Irrigation Technology at California State University at Fresno
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Field Audit:Catch Can Testing
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High Efficiency
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Low Efficiency
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The PR is the average rate in inches per hour at which water is being applied to the area covered by a specific sprinkler layout
PR is a function of the total sprinkler discharge applied to the area between the sprinklers
PR is not a measurement of uniformity and assumes 100% efficiency over every square inch of the sprinklers area of coverage
Precipitation Rate (PR)
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The DU is a measurement of uniformity, expressed as a percentage, comparing the driest 25% of the area to the average PR A perfectly uniform application is represented by a DU of 100%. A less uniform application is represented by a lower percentageThis uniformity measurement is used in the Irrigation Assoc. Water Auditor Program
Distribution Uniformity (DU)
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The SC is a measurement of uniformity, comparing the driest area to the average PR
A perfectly uniform application, a layout where all areas receive exactly the same amount of water, would have a SC of 1.00
The SC can also be used as a scheduling multiplier
Scheduling Coefficient (SC)
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5 Ways to Save Water with Rain Bird Rotors
1. Rain Curtain™ Nozzles
2. Pressure Regulation
3. Matched Precipitation Rate (MPR)
4. Seal-a-Matic (SAM) Check Valve
5. Low Flow Nozzles
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5 Ways to Save Water with Rain Bird Rotors
1. Rain Curtain™ Nozzles
2. Pressure Regulation
3. Matched Precipitation Rate (MPR)
4. Seal-a-Matic (SAM) Check Valve
5. Low Flow Nozzles
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Rain Curtain™ Technology
Create a Cohesive stream for maximum distance of throw.
Generate Larger droplets that are less susceptible to wind and airborne evaporation.
Deliver even water distribution across the entire radius range for superior green grass.
Short to Mid-Range Rain Curtain Nozzle Technology from 15-50 feet
http://rainbird.com/landscape/products/rotors/raincurtain_demo.htm
Patented Micro-Ramps for Superior Close in Watering
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Rain Curtain™ Technology
Long-range watering port
Mid-range watering port
Factory-installed port for consistent, effective, close-in watering
Long-Range Rain Curtain™ Nozzle Technologyfrom 40 to 81 feet
http://rainbird.com/landscape/products/rotors/raincurtain_demo.htm
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Rain Curtain™ Nozzle Technology
Three key elements:
1. Large droplets minimize effects of wind
2. Superior close-in watering
3. Even distribution
All Rain Bird Rotors use Rain Curtain™ Nozzles!
1
2
3
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5 Ways to Save Water with Rain Bird Rotors
1. Rain Curtain™ Nozzles
2. Pressure Regulation
3. Matched Precipitation Rate (MPR)
4. Seal-a-Matic (SAM) Check Valve
5. Low Flow Nozzles
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Pressure Variation
Short Term Variation– Usage– Maintenance– Electric rates– Restrictions
Long Term Variation– Community development– Changing regulations– Water source
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Pressure Variation
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Pressure Variation
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Pressure Variation
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Sprinkler Operating Pressure
High pressure results in ineffective misting and fogging
Reduce pressure at the sprinkler head
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Sprinkler Operating Pressure
Low pressure results in poor, uneven nozzle performance
Increase pressure with booster pumps
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In-Stem Pressure Regulation for Rotors
5000/5000 Plus Series Rotor with PRS:
PRS – Pressure Regulating Stem In-stem pressure regulation reduces inlet pressure to 45 psi for optimal nozzle performance.
How It Saves Water:
Eliminates head-to-head pressure variationEliminates mistingImproves distribution uniformity
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Pressure Regulating Stem in 5000 Series Rotors
Hunter PGP @ 75psi 5000 Plus PRS @ 75psi
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5 Ways to Save Water with Rain Bird Rotors
1. Rain Curtain™ Nozzles
2. Pressure Regulation
3. Matched Precipitation Rate (MPR)
4. Seal-a-Matic (SAM) check valve
5. Low Flow Nozzles
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Matched Precipitation Rate
Traditionally done by calculating the precipitation rate for each rotor.
Example5004 with 45 PSI and Standard Nozzles
Nozzle Radius GPM Precip RateFull 8 47ft 8.03 0.70”/hr1/2 4 42ft 4.01 0.88”/hr1/3 3 40ft 3.09 1.11”/hr1/4 2 37ft 2.07 1.08”/hr
How do you ensure the person putting the rotor in the ground understands this?
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Matched Precipitation Rate
The New Standard: MPR NozzlesExample5004 with 45 PSI and MPR Nozzles (Beige)
Nozzle Radius GPM Precip RateFull F 35ft 7.58 0.60”/hr1/2 H 35ft 3.81 0.60”/hr1/3 T 35ft 2.46 0.58”/hr1/4 Q 35ft 1.92 0.60”/hr
Simple, Easy & Efficient
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Water-Saving MPR NozzlesThe New Standard
Matched Precipitation Rate (MPR) Nozzles0.6 inches/hour for quarter, one-third, half and full MPR designs are fast and easyAvailable in 25 ft, 30 ft and 35 ft versionsWith MPR Rotor Nozzles and Rotary Nozzles, you can design for MPR from 13' to 35'
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5 Ways to Save Water with Rain Bird Rotors
1. Rain Curtain™ Nozzles
2. Pressure Regulation
3. Matched Precipitation Rate (MPR)
4. Seal-a-Matic (SAM) Check Valve
5. Low Flow Nozzles
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Leak Prevention from Low Head Drainage
14
feet
Low head without SAM wastes water
Built-in Seal-a-Matic (SAM) check valve saves water and prevents erosion from low-head drainage.
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SAM Check ValvesSAM Check Valves available in these Rain Bird Sprays and Rotors:
1800-SAM Sprays
3500 SAM Rotors
5000/5000 Plus SAM Rotors
5505 SAM Rotors
Falcon 6504 SAM Rotors
7005 SAM Rotors
8005 SAM Rotors
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SAM Check ValvesResidential Example (The House on the Hill)– ½ acre with 5 zones, – 4 rotors in each zone running down a slope– 30 feet between rotors– 1 inch pipe
600 feet of pipe X .041 Gallons per foot of pipe = 24 gallons
24 Gallons * 156 cycles per year = 3,819 gallons of waste per year
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5 Ways to Save Water with Rain Bird Rotors
1. Rain Curtain™ Nozzles
2. Pressure Regulation
3. Matched Precipitation Rate (MPR)
4. Seal-a-Matic (SAM) Check Valve
5. Low Flow Nozzles
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Low Flow Nozzles
PR must depend on the soil type, slope and vegetation
Soil with high levels of clay cannot absorb water quickly and need a low precipitation rate
Rain Bird offers low flowoptions for all rotors
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Low Flow Nozzles
Family Low Flow High Flow
3500 0.54GPM / 0.46”/H 4.60GPM / 0.83”/H
5000/5000+ 1.12GPM / 0.20”/H 9.63GPM / 0.86”/H
5500 1.20GPM / 0.21”/H 15.5GPM / 0.99”/H
6504 2.90GPM / 0.37”/H 21.7GPM / 1.14”/H
7005/8005 3.80GPM / 0.48”/H 36.3GPM / 1.23”/H
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5 Ways to Save Water with Rain Bird Rotors
1. Rain Curtain™ Nozzles
2. Pressure Regulation
3. Matched Precipitation Rate (MPR)
4. Seal-a-Matic (SAM) Check Valve
5. Low Flow Nozzles
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Complementary Products
Cycle & Soak ESP – LX
ET Manager
Complete MPR Nozzle sets in sprays with MPR, VAN, and, U-Series
All 4, 6, and 12” 1800 Series Sprays are available with a SAM check valve or a 45 psi pressure regulating device for Rotary Nozzles and 30 psi PRS device for MPR, VAN, and U-Series
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5 Ways to Save Water with
Rain Bird RotorsDavid Perl
Product Manager – Commercial RotorsFebruary 17th, 2010