The Gold Standard of Sprayers:
The Results are in: NOTHING Sprays Like a PermaGreen®
PermaGreen’s spray is the most even and accurate. Here’s the proof.
Spray Pattern Comparison
Spray Patterns from Four Systems
Spray pattern tests were conducted by PermaGreen to determine the evenness of spray distribution from various systems. The spray pattern graphs below illustrate two parallel passes made 8 feet apart on level ground, and liquid measurements were taken at regular intervals to determine the percentage of variance from a perfectly-even pattern. Due to nozzle variations and other factors, results may vary.
Take a moment to familiarize yourself with the charts we’ll be using:
Comparison Charts Explained
This diagram depicts the overlapping spray pattern between two parallel passes made 8 feet apart.
- The green line marks the center of Pass #1 (heading away from you)
- The red line marks the center of Pass #2 (heading towards you), which is 8 feet away from Pass #1.
In an attempt to produce complete coverage, all sprayers overlap thier patterns between the two passes.
This chart demonstrates the amount of liquid sprayed inside the 8-Foot distance between passes.
- For reference, the blue line in the middle represents a perfectly-even spray pattern (which no machine or nozzle can produce)
- The yellow line illustrates the amounts of liquid measured across the 8-Foot distance between Pass #1 and Pass #2.
Measurements above the blue line represent areas of over-application.
Measurements below the blue line represent areas of under-application.
About the spray collection process:
Spray pattern tests were conducted by making two parallel passes 8 feet apart over collector with parallel longitudinal troughs to catch the spray. The amount collected in each trough was measured with a graduated cylinder. Except as noted, the spray pressure was 40 PSI. Due to varitions in nozzles and other factors, results my vary.
Not All Systems Are Created Equally
The following charts depict the spray patterns for each of the four systems tested.
System A has 4 nozzles spaced 20” apart and a manufacturer-recommended turning distance of 8 feet. But, when the parallel passes are made 8 feet apart, the effect is 29% overage in some areas and a staggering 41% shortage in others. Regardless of the stated capabilities, the mathematically-correct distance between parallel passes for this system must be 6.7 feet, not 8 feet.
System B uses a different type of single wide-area nozzle than a PermaGreen that equally wastes 24% of the liquid product in some sections while also leaving other areas exposed to service calls from 24% under-application.
System C has 2 nozzles spaced less than 36 Inches apart, and they deliver coverage with significant product wastage and under application.
PermaGreen produces an impressively-even 8-Foot-wide spray pattern using a single nozzle and without the use of boom
The Bottom Line:
PermaGreen delivers the most even pattern out of any spray system tested. These results have been reaffirmed by thousands of sprayers operating in the field. PermaGreen is the GOLD STANDARD in sprayer spreaders.
WHEN OPERATORS CAN CHANGE SPEEDS AND PRESSURES AT WILL
Variations in speed and pressure affect spray rates and produce poor results.
The Importance of Fixed Speeds
PROBLEM: Hydraulic drive systems found on zero-turn mowers and garden tractors allow the operator to travel at any speed between 0 MPH and the top speed of the mower. This works fine for mowing, but it can be disastrous for spraying turf care products through a sprayer that requires a consistent rate of speed for accuracy.
When there are no set speeds, the operator must watch a speedometer or simply guess (or worse, ignore) how fast they’re moving and then constantly adjust their travel speed. Precise calibration settings made back at the shop (which were based on travel speed) are absolutely worthless.
SOLUTION: PermaGreens have two gears: 5 MPH for high gear and 3.5 MPH for low gear. Just change gears and select the dedicated nozzle, which is automatically synchronized to deliver the correct amount of spray at each speed. PermaGreens are simple, easy and reliable. The operator never has to watch a speedometer or guess how fast they’re traveling.
As shown in the chart, the calibrated speed for an accurate application is 5 MPH. If the sprayer’s speed drops to 3 MPH – it will apply 67% more product than necessary. If the speed increases to 7 MPH, 29% less product will be applied, resulting in under application and subsequent service calls.
The only way to prevent those quality-robbing variations in application is to require the technician to make distracting, delicate and complicated adjustments to the spray pressure while driving.
Maximum Suggested Speed
5 MPH (3,400 ft2/min.) is fast enough to treat an acre in 15 minutes, but it’s also slow enough to see stressed areas of turf that need attention or other obstacles, such as ornamentals. Any faster, an you’ll potentially miss these spots or inflict property damage.
The Importance of Fixed Pressures
PROBLEM: Most other sprayers on the market have variable pressure regulators with dials or levers that must be adjusted whenever the machine changes speed.
If a technician fails to set the correct pressure to match the varying ground speeds, the result is over or under-application, which leads to product wastage and service calls.
SOLUTION: PermaGreens automatically control spray pressure, with no dials to mess with, leaving less chance for operator error. This is a patented feature found only on PermaGreens.
For example, if the correct pressure is 40 PSI and the operator mistakenly lowers the pressure by only 20 PSI, 29% less product is sprayed. If they crank up the pressure by 20 PSI, 22% more product is sprayed. Just like variations in speed, both scenarios result in a poor application.
Good Things Happen:
When you use PermaGreen
Our patented spray system solves the pattern, speed and pressure problems that plague ordinary sprayers
Most Even Pattern
Provide your customers with the best spray service money can buy
Automatic, non-adjustable spray pressures with NO guesswork
5 MPH and 3.5 MPH wth a nozzle for each speed
Delivers the precise amount of product every time without extra work from you
There is no guesswork involved, so operators quickly become pros
Peace of Mind
Settings are locked-in to prevent mistakes and unauthorized changes