Technical Products and Services Inc.
Your Single Source of Fluid
Handling Products Since 1981
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Spray Nozzle Related Calculators
Spray Nozzle Flow Rate Calculator
This calculator is meant to assist you with estimating the flow rate of
a spray nozzle at pressures that aren't listed in a catalog or if you do
not have a catalog readily available. Many nozzle companies use a part
number that describes the spray angle and flow rate at 40 PSI. For
instance, a "6520" is usually a 65° angle flat fan nozzle flowing ~2 GPM
at 40 PSI. In the example below, the flow rate at 150 PSI is calculated
to be ~3.87 GPM. Ultimately this calculator can be used to determine
the required flow rate for a spray header.
This
equation is based upon the formula to the right. Q1 and P1
are the known flow rate and pressure. Q2 is the resulting flow
rate for the pressure in question P2.
Spray Nozzle Coverage Calculator
Our
spray coverage calculator assists with estimating the number of spray
nozzles required for a given spray angle, spray height based upon the
coverage you require. This will enable you to minimize the number of
spray nozzles required by choosing a wider spray angle or adjusting your
spray height - or some combination thereof. Ultimately you may require
a different percentage of overlap or there might be some other coverage
related aspects to consider, however this calculator will provide a
relatively accurate estimate and help you to design your own spray header.
Although this calculator was created with
Flat Fan
nozzles in mind, it also works well for
Full Cone
nozzles as long as you are trying to estimate the coverage across a target.
- The Actual Overlap differs from 25% to evenly space the nozzles across
the header, as the number of nozzles required is a whole number.
-
Complex spray coverage patterns such as large
circular/rectangular areas, specialized nozzle patterns such as even
spray pattern nozzles and prediction of coverage for spray injected
into a gas stream or pressurized vessel are all examples where this
calculator is not useful.
-
This calculator does not take into account such
variables as
Surface Tension,
Specific Gravity or fluid temperatures ≠ 70°F.
-
Spray Coverage is based upon Theoretical
Coverage and doesn't take into account the collapsing effect that
gravity exerts on a pattern for very high spray heights. Theoretical
Coverage is considered to be accurate for spray heights up to ~6
feet. At these heights and higher it is suggested that you
contact a spray nozzle specialist and review your requirements with
them.
-
The
Effective
Coverage Overlap is a suggested minimum and based upon using
Flat Fan Nozzles or Full Cone Nozzles having a parabolic (tapered) spray
distribution.
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