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*May exceed 25 psi or 1.72 bar pressure drop.
Table 4.4 - Performa Filter
Pressure Loss vs Flow (gpm)
PSI
Service (Cv 6.5)
Backwash (Cv 5.0)
5
15
11
10
20
16
15
25
19
20
29
22
25
32
25
30
35
27
Pressure Loss vs Flow (Lpm)
Bar
Service (Kv 5.6)
Backwash (Kv 5.8)
0.35
56
42
0.7
76
61
1
95
72
1.4
109
83
1.7
121
95
2.1
132
102
Table 4.5 - Typical Backwash Flow Requirements for Various Filter Medias (based on 55
°
F (12.7
°
C) water
temperature)
GAC/CARBON FILTER-AG, CALCITE
GREENSAND
BIRM
SAND, MULTI-MEDIA
Tank Dia.
inches (mm)
Bed Area
sq. ft.
8 gpm/sq ft
(Lpm/sq ft)
10 gpm/sq ft
(Lpm/sq ft)
12 gpm/sq ft
(Lpm/sq ft)
15 gpm/sq ft
(Lpm/sq ft)
14 (35.6)
1.02
8 (30)
10 (38)
12 (45)
15 (57)
16 (40.6)
1.38
11 (42)
13 (49)
16 (61)
20 (76)
18 (45.7)
1.76
14 (53)
17 (64)
21 (79)
*26 (98)
21 (53.3)
2.4
19 (72)
24 (91)
*29 (98)
24 (60.9)
3.14
25 (95)
Reynolds Water Conditioning Co.
24545Hathaway
Farmington Hills, MI 48335
800-572-9575