Plastic Ball Technical Data

Chemical Resistance of Plastics

PVDF -- This material offers significant increases in operating temperatures up to 320°F (160°C), providing resistance to many aggressive chemicals where other plastics would fail.

Polypropylene (PP) -- Able to withstand continuous working temperatures of up to 230°F 110°C. Suitable for contact with most chemicals used in the metal treatment industry.

High Density Polyethylene (HDPE) -- Suitable for working conditions up to 176°F (80°C). HDPE is recommended for all external applications due to its enhanced resistance to freezing conditions. Black, UV stabilizing additives prevent the degrading effects of sunlight. HDPE is also recommended for demineralized water and Chromic acid applications.

Plastic Ball Tehnical Data

Ball Diameter and Surface Coverage

Diameter (mm)	Average weight (g)	Number per ft²	Number per m²
10	0.2	1,076	11,600
20	1.0	270	2,900
25	1.5	172	1,850
38	4.5	74	800
45	7.0	53	570
50	8.0	43	465
70	16.0	22	235
100	40.0	10	116
150	100.0	4.8	51.5

The percentage of area covered by the balls is independent of the ball diameter, being the ratio of a circle to the hexagon which surrounds it. This equates to 91% of the liquid surface area. The frictional contact points ensure that each ball remains stable when subjected to increased liquid or air turbulence.

Heat and Liquid Loss Savings

	Open Surface	1 layer 38mm balls	2 layers 38mm balls
Average Surface Temperature °C	90, 70, 50	90, 70, 50	90, 70, 50
Energy consumption Kwh/h	10.73, 4.61, 1.61	2.70, 1.31, 0.60	2.04 0.76 0.51
Percentage energy saving	- - -	75%, 71%, 65%	81%, 76%, 70%
Evaporation liters/m²h	13.05, 4.97, 1.45	1.67, 0.41, 0.14	1.28, 0.38, 0.13
Percentage evaporation saving	- - -	87%, 91%, 90%	90%, 92%, 91%

Test Tank Dimensions = 600mm(W) x 1850mm(L) x 1000mm(H).