Product Features

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.

Floating Ball Cover Diameter and Surface Coverage

The percentage of area covered by the floating ball cover 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 floating ball cover remains stable when subjected to increased liquid or air turbulence.

 

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  8.8  43  465
70  16.0  22  235
100  40.0  10  116
150  100.0  4.8  51.5

 

floating ball cover
Floating Ball Cover

Heat and Liquid Loss Savings

Open Surface 1 layer 38mm balls 2 layers38mm balls
Avg 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 .60 2.04 0.76 .051
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 vaporation saving 87 91 90 90 92 91










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