FILTER TYPE 2" AAF
000616
-
10101
9
/
07.2017
Page
9
of
28
3.3 Back-flush Valves Operation Mode:
Modes of the filter’s Control valve
Filtration Position:
•
Inlet valve
- Water flows from port [2] (main supply) to port [C] (filter connection). Port [1] (drain water
outlet) is closed by the seal.
•
Outlet valve
- Water flows from port [C] to port [2]. Port [1] is closed by the seal.
Back-flush Position:
•
Inlet valve
-
Command pressure is applied to the diaphragm’s control chamber through port [D]. The
diaphragm moves the sealed shaft, port [2] closes, preventing flow to the filter. Port [C] opens, allowing
flushing water to flow from port [C] (filter connection) to the drain [1].
•
Outlet valve
-
Command pressure is applied to the diaphragm’s control chamber through port [D]. The
diaphragm moves the sealed shaft, port [2] closes, port [1] opens, allowing flushing water to flow to port [C].
1
D
2
C
D
2
C
1
Inlet Valve Filtration Mode
D
2
C
1
Inlet Valve Back-flush Mode
D
2
C
1
Outlet Valve Back-flush Mode
Outlet Valve Filtration Mode
