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5.6
Water quality
28
User
Single use or
Dwellings
kitchen sink
basin
hand washing
shower
bath
dishwasher
Hotel - motel
basin
hand washing
shower
bath
dishwasher (ind.)
Industries
basin
hand washing
10 people
6 people
shower
Taps (fitting)
capacity diame-
ter in mm
10
15
20
Table 9 Delivery from fittings
Water hardness
The hardness of water is caused by the dissolved salts of
calcium and magnesium, principally carbonates, sulfates and
silicates.
Temporary hardness
When the temperature of the water is raised, part of the salts
are precipitated as calcium carbonate and magnesium hydrox-
ide. This is termed temporary or carbonate hardness.
18IP22B
Temperature
fill in litres
in °C
13 - 15
40 - 60
7 - 10
5
60
100 - 150
60
10
5
60 - 80
120 - 180
60 - 90
60 - 85
10
150 - 300
120 - 180
60 - 80
half open
fully open
half open
fully open
half open
fully open
Demand in
litres/minute
12 - 18
40
6 - 8
30
6 - 8
40
8 - 12
40
12 - 18
60
12
40
8 - 12
30
6 - 8
40
8 - 12
40
12 - 18
18 - 24
40
8 - 12
35
5 - 10 per outlet
35
6 - 12 per outlet
40
10 - 15
40
5
40
10
40
10
40
18
40
25
40
45
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