Technical Finishing & Dispensing Informaion
The following links and text are technical information commonly used in spray, powder, and wood finishing, as well as other industrial applications. This information was created to help you better understand your applications, or as a reference for common questions one can run into in these fields. To the best of our knowledge, this information is accurate and up-to-date, but this information is made available for reference only as engineering is best left up to the engineers.
Please contact us here with any questions!
Glossary of Paint Defect Terms
Even if you're an old pro, some of the terminology that's used in the fluid handling and paint finishing business can be confusing. Learn what "Blooming," "Orange Peel," "Pinholing" and dozens of other terms mean.
Spray Application Overview
Our spray application overview teaches you everything you wanted to know about the differences between Air, Airless, Air-Assisted and Electrostatic spray equipment.
Spray Gun Troubleshooting: Trigger Happy
Trigger Happy: Learn how to properly adjust and troubleshoot spray patterns so your spray guns work the way they were intended.
Spray Gun Troubleshooting: Three C's
Three C's: Find out the cause and solution for many of the vexing issues you might encounter with your spray guns.
Fluid Tip Selection
Need help selecting the right Fluid Tip for your project? Read through our quick tip selection guide for help.
Filtration Guide
Utilize this easy guide to better understand filtration and how to remove contaminants from fluid you are working with.
General Reference Information
Bead Size Diameter Vs. Volume Chart
Bead Size Diameter Conversion Chart
Round Bead Size Diameter (inches) |
Cubic Inches per 1000 Lineal Feet |
Approx. U.S. Gallons Per 1000 Lineal Feet | Approx. Lineal Feed Per U.S. Gallon |
1/16" | 36.8 | 0.16 | 6000 |
3/32" | 82.9 | 0.36 | 2700 |
1/8" | 147.3 | 0.64 | 1500 |
3/16" | 331.7 | 1.44 | 675 |
1/4' | 589.1 | 2.55 | 375 |
5/16" | 920.4 | 3.98 | 240 |
3/8" | 1325.4 | 5.74 | 165 |
1/2" | 2356.2 | 10.20 | 95 |
5/8" | 3861.6 | 15.92 | 50 |
3/4" | 5300.4 | 22.95 | 35 |
1" | 9424.8 | 40.80 | 19 |
Standard Viscosities'
Based on 70 Degrees Fahrenheit
Acetone | .3 | centipoise (cps) |
Adiprene (urethane) | 35,000 | centipoise (cps) |
Benzine | .5 | centipoise (cps) |
Blood | 10 | centipoise (cps) |
Chocolate Syrup | 10,000 | centipoise (cps) |
Corn Syrup | 110,000 | centipoise (cps) |
Ethylene Glycol | 16 | centipoise (cps) |
Glue (hot melt) | 30,000,000 | centipoise (cps) |
Honey | 3,000 | centipoise (cps) |
Ink | 45,000 | centipoise (cps) |
Ketchup (Heinz) | 50,000 | centipoise (cps) |
Lacquer | 250-1,100 | centipoise (cps) |
Linseed Oil (boiled/raw) | 64/28 | centipoise (cps) |
Maple Syrup | 144 | centipoise (cps) |
Methyl Ethyl Ketone (MEK) | .4 | centipoise (cps) |
Milk | 3 | centipoise (cps) |
Molasses | 5,000 | centipoise (cps) |
Mustard | 70,000 | centipoise (cps) |
Oil SAE 10 | 65 | centipoise (cps) |
Oil SAE 20 | 125 | centipoise (cps) |
Oil SAE 30 | 200 | centipoise (cps) |
Motor Oil (SAE 10) | 50 | centipoise (cps) |
Motor Oil (SAE 40) | 250 | centipoise (cps) |
Motor Oil (SAE 60) | 1,000 | centipoise (cps) |
Oil SAE 40 | 319 | centipoise (cps) |
Oil SAE 50 | 540 | centipoise (cps) |
Oil SAE 60 | 1,000 | centipoise (cps) |
Oil SAE 70 | 1,600 | centipoise (cps) |
Oil SAE 80 (trans. grades) | 240 | centipoise (cps) |
Oil SAE 90 (trans. grades) | 590 | centipoise (cps) |
Oil SAE 140 (trans. grades) | 2,200 | centipoise (cps) |
Oil Caster | 240 - 1,000 | centipoise (cps) |
Oil Core | 29 | centipoise (cps) |
Oil Corn | 72 | centipoise (cps) |
Oil Crude | 15 | centipoise (cps) |
Oil Soybean | 160 | centipoise (cps) |
Peanut Butter (Skippy) | 250,000 | centipoise (cps) |
Salad Dressing (Miracle Whip) | 250,000 | centipoise (cps) |
Shortening (Crisco) | 1,200,000 | centipoise (cps) |
Sulphuric Acid (100%) | .2 | centipoise (cps) |
Toluol | .6 | centipoise (cps) |
Tomato Paste | 190,000 | centipoise (cps) |
Turpentine | 1 | centipoise (cps) |
Varnish (spar) | 420 | centipoise (cps) |
Vaseline Petroleum Jelly | 64,000 | centipoise (cps) |
Water | 1 | centipoise (cps) |
Xylol | .6 | centipoise (cps) |
Flow Through A Tip
Flow = (22 x (Orifice Diameter)2 x Sqrt(Spray Pressure)) / (Specific Gravity)
*Pressure in PSI, Orifice Diameter in Inches, Flow in Gallons Per Minute
Minimum Flow Rates
Circulating of paints and similar materials containing pigments or fillers requires fluid flow velocities high enough to maintain the contained particles in suspension. A velocity of 60 feet per minute has been accepted as a minimum velocity to maintain suspension. For your convenience, we have calculated the minimum flow rates for various size tubes and placed them in a easy to read table below.
* To calculate minimum flow rates for other tube sizes use the following formula: Flow rate(Gallons Per Minute) – 3.11 x Inside Area of tube(Inches2)
Circulating Line Size | Minimum Flow Rate |
1/4" std. pipe | 0.325 |
3/8" std. pipe | 0.595 |
5/8" O.D. x .035" wall tube | 0.75 |
1/2" std. pipe | 0.95 |
7/8" O.D. x .035" wall tube | 1.58 |
3/4" std. pipe | 1.66 |
1" O.D. x .035" wall tube | 2.12 |
1" std. pipe | 2.69 |
1 1/4" std. pipe | 4.66 |
1 1/2" std. pipe | 6.35 |
2" std. pipe | 10.5 |
Conversion Factors
Length
1 in = 25.4 mm = 2.54 cm = .0254 m
1 ft = 12 in = 30.48 cm = .304 m
1 yd = 3 ft = 36 in = .9144 m
1 mile = 1,760 yd = 1.6092 km
1 mm = .1 cm = .0394 in = .003281 ft
1 cm = 10 mm = .01 m = .3937 in = .03281 ft
1 m = 100 cm = 1000 mm = 39.365 in = 3.28 ft
1 km = 1000 m = 3280 ft = 0.6214 miles
Weight
1 oz = .0625 lb = 283.5 mg = 28.35 g = .0283 kg
1 lb = 16 oz = 4536 mg = 453.6 g = .4536 kg
1 short ton = 2,000 lb = 907.18 kg
1 long ton = 2,240 lb = 1,016 kg
1 mg = .1 cg = .001 kg = .0035 oz = .0002205 lb
1 g = 1,000 mg = .0353 oz = .00220 lb
1 kg = 1,000 g = 1,000,000 mg = 35.3 oz = 2.2046 lb
1 metric ton = 1000 kg = 2204.61 lb = .9842 long ton
Area
1 in2 = 6.4516 cm2 = 0.0069444 ft2
1 ft2 = 144 in2 = 929.03 cm2 = .0929 m2
1 yd2 = 1296 in2 = 9 ft2 = 0.8361274 m2
1 mile2 = 3,097,600 yd2 = 2,589,988.1 m2 = 2.589 km2
1 cm2 = .0001 m2 = 0.155 in2
1 m2= 10,000 cm2 = 1,550 in2 = 10.764 ft2
1 km2= 1,000,000 m2 = 1,195,990 yd2 = .3861 mile2
Fluid Volume
1 fl oz = .0296 l = .125 cup = .0625 fl pt = .03125 fl qt = .007813 gal
1 l = 33.81 fl oz = 4.227 cup = 2.113 fl pt = 1.057 fl qt = .264 gal
1 cup = 8 fl oz = .2366 l = .5 fl pt = .25 fl qt = .0625 gal
1 fl pt = 16 fl oz = .4732 l = 2 cup = .5 fl qt = 0.125 gal
1 fl qt = 32 fl oz = .9462 l = 4 cup = 2 fl pt = .25 gal
1 gal = 128 fl oz = 3.785 l = 16 cup = 8 fl pt = 4 fl qt
Force & Pressure
1 lb force = 4.448 Newton
24 psi = 1.633 atm = 6.9 kpa = 1.65 bar = 1,241 mm of merc.
Power
1 ft*lb/s = 1.35 W
1 hp = 746 W
Temperature
Fahrenheit = (1.8 x °C) + 32
Celsius = (°F-32)/1.8
Comfortable Room | 22 °C | 68 °F |
Human Body | 37 °C | 98 °F |
Lead Melts | 328 °C | 622 °F |
Baking Over | 150 °C | 302 °F |
Water Boils | 100 °C | 212 °F |
Water Freezes | 0 °C | 32 °F |
Mercury Freezes | -40 °C | -40 °F |
Hardness Comparison Chart
Dureometer Scale:
Note: Dur. A = Shore A Dur. D = Shore D
Reference Numbers:
Human skin = 20 on Dur. A
Pencil eraser = 60 on Dur. A
Auto tire = 75 on Dur. A
Typewriter roller = 90 on Dur. A
Telephone handset = 75 on Dur. D
Hardness Value
A | B | C | D | O | OO |
100 | 85 | 77 | 58 | ||
95 | 81 | 70 | 46 | ||
90 | 76 | 59 | 39 | ||
85 | 71 | 52 | 33 | ||
80 | 66 | 47 | 29 | 84 | 98 |
75 | 62 | 42 | 25 | 79 | 97 |
70 | 56 | 37 | 22 | 75 | 95 |
65 | 51 | 32 | 19 | 72 | 95 |
60 | 47 | 28 | 16 | 69 | 93 |
55 | 42 | 24 | 14 | 65 | 91 |
50 | 37 | 20 | 12 | 61 | 90 |
45 | 32 | 17 | 10 | 57 | 88 |
40 | 27 | 14 | 8 | 53 | 86 |
35 | 22 | 12 | 7 | 48 | 83 |
30 | 17 | 9 | 6 | 42 | 80 |
25 | 12 | 35 | 76 | ||
20 | 6 | 28 | 70 | ||
15 | 21 | 62 | |||
10 | 14 | 55 | |||
5 | 8 | 45 |
How Much Paint/Material is in a Length of Hose?
Material Per Length of Hose
Hoses I.D. in Inches | Hose Length 25 ft | Hose Length 50 ft | Hose Length 100 ft |
1/4" | 8.2oz / 241.3cc | 16.4oz / 482.6cc | 32.8oz / 965.2cc |
5/16" | 12.7oz / 377cc | 25.4oz / 754cc | 50.8oz / 1508cc |
3/8" | 18.4oz / 543cc | 36.8oz / 1086cc | 73.06oz(.57gal) / 2172cc |
1/2" | 32.6oz / 965.3cc | 65.2oz(.5gal) / 1930.6cc | 130.4oz(1.02gal) / 3860cc |
3/4" | 73.4oz(.57gal) / 2172cc | 146oz(1.1gal) / 4344cc | 293.6oz(2.2gal) / 8688cc |
1" | 130.6oz(1.02gal) / 3861cc | 261.2oz(2.04gal) / 7722cc | 522.4oz(4.09gal) / 15444cc |
Wet Film Thickness vs. Area Conversion
Wet Film Thickness (mils.) | Approx. Area in Square Feet |
1.00 | 1604 |
1.50 | 1069 |
2.00 | 802 |
2.50 | 642 |
3.00 | 535 |
3.20 | 501 |
3.40 | 472 |
3.60 | 446 |
3.80 | 422 |
4.00 | 401 |
4.20 | 382 |
4.40 | 365 |
4.60 | 349 |
4.80 | 334 |
5.00 | 321 |
8.00 | 201 |
10.00 | 160 |
One Gallon Covers this many Square Feet | Approx. Wet Film Thickness (mils.) |
1000 | 1.60 |
950 | 1.69 |
900 | 1.78 |
850 | 1.89 |
800 | 2.00 |
775 | 2.07 |
750 | 2.14 |
725 | 2.21 |
700 | 2.29 |
675 | 2.38 |
650 | 2.47 |
625 | 2.57 |
600 | 2.67 |
575 | 2.79 |
550 | 2.92 |
525 | 3.06 |
500 | 3.21 |
300 | 5.34 |
100 | 16.04 |