3
24
19
20
18
13
17
4
2
8
1
11
16
5
6
7
26
27
12
25
15
9
14
10
23
22
3
21
Figure 3-1
Automated System Layout
1. BioSand Filter
2. Filter Stand
3. Storage Tank
4. Raw Water Inlet
5. Filter Inlet Valve
6. Filter Float Valve with Union Connection
7. Clean In Place (CIP) and Diffuser Basin
8. Underdrain
9. Flow Rate Control Valve
10. Filter Standpipe
11. Standpipe Union Connection
12. Standpipe Lower Valve
13. Maintenance Drain Valve
14. Filter Outlet Valve
15. Anti-siphon Valve
16. Filter Overflow
17. Solenoid Valve (to high level float switch)
18. Storage Tank Inlet Valve with Union
Connection
19. Sampling Valve
20. Storage Tank Float Valve
21. High Level Float Switch (to the solenoid valve)
22. Low Level Float Switch (to the pump)
23. Storage Tank Outlet with Union Connection,
Shutoff Valve and Drain Valve
24. Check Valve
25. Pump Electrical Outlet (to the low level float
switch)
26. Clean In Place (CIP) Reverse Flow (attached to
standpipe lower valve)
27. To Distribution or Further Treatment (softener,
Reverse Osmosis, UV)
