Static Spray Balls Static spray balls clean tanks and vessels by saturating them with a significant amount of fluid with high flow, and relatively low pressure. The solution cascades down the tank's sidewalls eroding water-soluble soils.
QUICK TIPS Calculate the recommended minimum spray ball flow rate required for cleaning process vessels by entering the tank diameter:
_______________ = _______________ x 9.5 (Spray Ball Flow in gpm) (Tank Diameter in feet)
A minimum flow rate of 3 gallons per minute (gpm) for every foot of tank circumference is required to produce sufficient turbulent flow to cascade solution down vessel walls. This calculation is for general top head and sidewall wetting only. Additional flow is required for targeted streams to manway, ports, baffles, agitators, etc.
Choosing a Spray Ball Type: Spherical: Most common spray ball; ideal for general patterns.
Tangential: The 90 degree / perpendicular flat area at the “top” of a tangential spray ball allows for a vertical spray pattern. This can help provide maximum spray coverage to the top of a tank. Spray Bubble: These are size-on-size sprays (hemisphere to supply tube) and ideal for saving space. Although it is a space saving design, it’s important to recognize that the design also eliminates any “upward” spray coverage, assuming a vertical supply tube application. It’s essentially one half of a spray ball (one hemisphere), attached to end of tube with the same diameter.
Spherical
Tangential
Spray Bubble
Strainer Sizing: Use the below recommendations for sizing a strainer to use upstream of static spray balls. This will keep debris from being collected inside the spray ball which would reduce effectiveness of cleaning. Wedgewire Element: 0.015" or smaller
Mesh Overlay: 40 mesh or higher Filter Tubes: 425 micron or smaller
GOOD TO KNOW • Spray Ball Material: 316Lss • Maximum Operating Pressure: 70 psi • Wraparound clips are standard. • Material Test Reports (MTRs) are available. • Hastelloy and AL-6XN material options are available for some spray balls. • Custom spray balls require longer lead times. • A 1 / 16 " drain hole is standard for all spray balls. • A clip is included with every spray ball with slip collar connection.
• Cleaning Distance: A static spray device's cleaning radius (the distance away that it can provide solution for cleaning) depends on many variables including pressure and spray ball hole size and angle. As a general rule of thumb, if operating in pressure ranges of 10-20 psi, the cleaning radius is 4-6 feet. If operating in pressure ranges above 20 psi, the cleaning radius is 5-7 feet.
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HCS-0001.9
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