FAQ

How much water does a mister system use?
Do I need a Filter for my mister system?
Do I need an Automatic Drain Valve?
Do I need a Booster Pump?
Why doesn't more pressure handle more nozzles?
Water Pressure vs. Number of Nozzles
Abbreviations

1. How much water does a mister system use?

There are three main factors that affect the amount of water used by misters:
Nozzle Orifice: The only outlet of water are the nozzles, and they have a very fine outlet orifices which is smaller than the diameter of the human hair.
Water Pressure: Although higher pressure forces more water out of the misters, yet this higher water pressure improves the quality of the mist by turning it into fog, and that is when it is most efficient.
Number of Misters: The more misters you have, the more water you use.
Therefore the ideal overall water usage depends on striking a balance between all above three factors. Nevertheless the nozzles that we use in our E Z Mister systems,

Water Pressure GPH * / Nozzle

45 psi 0.37

60 psi 0.43

100 psi 0.55

* GPH = Gallons Per Hour

In order to get the water consumption per hour, multiply the number of misters that you have by the corresponding GPH at the water pressure that you have.

2. Do I need a Filter for my mister system?

The size of a nozzle opening is roughly the thickness of a human hair, and that can easily be clogged with a grain of sand or a granule of rust, that is why it is essential that the nozzles are protected with a 5 Micron sediment filter.
Every water source is different, some are cleaner than others, although you can use a mister without a filter, yet you might face clogging problems if your water is rich with sediments. Anything below 30 micron is invisible to the naked eye, and although you might think that your water is clear, yet you are not seeing the pollutants that are smaller that 30 micron. This why a 5 micron sediment filter is recommended, because it prevents nozzle clogging from sediments such as sand and rust.

3. Do I need an Automatic Drain Valve?

A mister system works fine without a drain, however an automatic drain empties the tubing from water once you shut off the water supply, and that helps the system operate more efficiently.

4. Do I need a Booster Pump?

USA city water pressure ranges between 35 psi and 90 psi, and that meets the minimum requirement for the mister system to work. However the more nozzles you have, the more pressure is needed to get a finer mist, and a finer mist offers a more efficient cooling.
You need a booster pump if your water pressure is below 45 psi, and/or to improve the pressure to get a finer mist, and/or to increase the number of nozzles, noting that 45 psi can handle 2 nozzles only, (see table below).

5. Why doesn't more pressure handle more nozzles?

The number of nozzles depend on 3 factors:
Water pressure in psi
Water volume or flow in gpm
Nozzle volume in gph
Of the above the water flow is the decisive factor, because the low pressure household water offers a flow of 6 - 10 gpm, which is way above what the medium pressure pump with a volume of 0.5 gpm, and the high pressure pump having a flow of 0.5 - 2.3 gpm. This is why low pressure system can have more nozzles.

6. Water Pressure vs. Number of Nozzles (VERY IMPORTANT)

In order to get a decent atomized mist, you need to have a decent water pressure!
The higher the pressure, the finer is the qualit of the mist!
The EZ MISTER® System can handle up to 200 psi
Works on city water pressure, by connecting to your backyard garden hose faucet/bib.
Number of Nozzles Per PSI, the table below shows the number of misters that water pressure could handle to offer a decent mist (it also depends on available water flow rate).

Water         Maximum
Pressure   Number of
psi*             Nozzles
   45              2
   50              5
   60            10
   70            15
   80            20
   90            25
100             30
110             35
120           40
130           45
140             50
150            55

* psi = Pound per Square Inch

Normally, city water pressure supplied to residential houses ranges from 35 psi to 90 psi.
A minimum of 45 psi is needed for decent misting (Note the above table), but 45 psi can handle only 2 nozzles.
Below 45 psi the water particles tend to be larger, and closer to a jet stream than a mist.
People with well water normally have their water pressure at about 40 psi, if that is the case, then they need a booster pump.
To test your water pressure, you can either call your city water municipality/department, or go to Home Depot, and perchase a garden hose water pressure gauge, they are found at the plumbing department next to sprinklers, and cost about $8.00 - $9.00.
TIP: Your city water pressure will dictate how many nozzsles you can run, however there is a way to increase that as follows: Let's say you want to run 20 nozzles and your city has 80 psi, then you are OK (see above table). But if your city supplies 60 psi only, (and you still want to run 20 nozzles), then you need to run two independent lines of 10 nozzles each (this way each line will have 60 psi to handle 10 nozzles). To do this, you can use a 3/4" Garden Hose splitter #MW on your Bib, then attach 2 Garden Hose Faucet Adaptors #MGHFA, (alternately, you can attach one Garden Hose Faucet Adaptor #MGHFA to your Bib, then split the 1/4" line using one Wye fitting #MY to run two line in a parallel direction, or use one Tee fitting #MT to run two lines in opposite directions, (or at 90 degrees from each other).

7. Abbreviations