Design and function
3.3.3
Design of the pre-filter
1
2
Fig. 5:
Design of the pre-filterr
Legend
1 Filter element
2 Filter casing with O-ring
3.3.4
Design of the BA backflow preventer
2
1
Fig. 6:
Design of the BA backflow preventer
Legend
1 Backflow preventer cartridge with seal
2 Test valves for maintenance (3 items, available as optional accessories)
12
