SIATA V250 - Page 22

20
V 2 5 0
E
N
G
L
I
S
H
Even when using the backwash valve, it is possible to have untreated
water at the outlet from the valve during the regeneration phase. To
avoid this, use a shut-off valve.
Fig. 2: By-pass valve / Backwash valve
P2
Open backwash valve
Closed backwash valve
UNMIXED WATER
P1<P2
P1
MIXED WATER
P1>P2
HARD WATER
P1
HARD WATER
P2
By-pass valve