Installer manual Siata V132 - SFE - System sizing
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Ref. MKT-IM-003 / B - 19.04.2017
Depending on the inlet water hardness, the service velocity for standard softening has to be between:
Note
Failure to respect the service velocity will lead to hardness leakage or even total softener
inefficiency.
Note that the water supply piping size may also be useful when estimating the nominal flow rate, since
the size of the piping allows a maximum flow rate to pass. Assuming the maximum velocity of water
in pipes is about 3 m/s, a good estimation for most common pressure [3 bar] and temperature [16°C]
is:
Service velocity
[bed volume per hour]
Inlet water hardness
[mg/l as CaCO
3
]
°F
°TH
°dH
8 - 40
< 350
<35
<19.6
8 - 30
350 to 450
35 - 45
19.6 - 25.2
8 -20
> 450
>45
>25.2
Piping size (internal diameter)
Max. flow rate
[in]
[mm]
[m
3
/h at 3 m/s]
0.5
12
1.22
0.75
20
3.39
1
26
5.73
1.25
32
8.69
1.5
40
13.57
2.0
50
21.20
2.5
63.5
35.2
3.0
76.2
49.2
A
Содержание Siata V132 SFE
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