28
1 C = BACKWASH STAGE
- In this stage we have pressure in points 3 - 2 of
the pilot control, transmitted to the pistons F - G
in points 3 - 2 of the valve.
- The black arrows indicate the hard water route.
- The white arrows indicate the regeneration water route
-
C
= UNTREATED WATER INFEED.
-
B
= UNTREATED WATER OUTFEED.
-
E
= REGENERATION WATER OPEN DRAIN.
-
A
= UNSTABLE VALVE OPEN TO GUARANTEE
WATER TO THE SERVICES DURING THE
REGENERATION STAGES.
2
1
3
B
D
C
A
4
F
G
E
2
1
3
4
CORPO VALVOL A
PI LOTA DI COMANDO
2
1
3
B
D
C
A
4
F
G
2
1
3
4
E
CORPO VALVOL A
PI LOTA DI COMANDO
2 C = BRINE SUCTION STAGE
IN EQUI-CURRENT
- In this stage we have pressure in points 4 - 2 of
the pilot control, transmitted to the pistons F - G
in points 4 - 2 of the valve.
- The black arrows indicate the hard water plus brine route.
- The white arrows indicate the regeneration water route.
-
C
= UNTREATED WATER INFEED.
-
B
= UNTREATED WATER OUTFEED.
-
E
= REGENERATION WATER OPEN DRAIN.
-
D
= BRINE SUCTION.
-
A
= UNSTABLE VALVE OPEN TO GUARANTEE
WATER TO THE SERVICES DURING
THE REGENERATION STAGES.
CONTROL
PILOT
VALVE BODY
CONTROL
PILOT
VALVE BODY
Summary of Contents for DOUBLE Series
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