Page 63 - Apollo - 2016 Backflow Prevention Catalog

BACKFLOW PREVENTION CATALOG

Flow Curves

Flow Curves: Pressure loss versus flow data as determined by
independent approval agencies. (See Notes on page 71)
REDUCED PRESSURE PRINCIPLE
RPLF 4A

RPLF4A 2.5" 3" 4" METER RATED FLOW
25
24
23
22
21
20
19
Pressure Loss (psi) 17 2.5” 3” 4”
18
16
15
14
13
12
11
10
9
8
7
6
5
0 100 200 300 400 500 600 700
Flowrate (gpm)
RPLF4A 6" 8" METER RATED FLOW
22
21
20
19
18
17
Pressure Loss (psi) 15 6” 8”
16
14
13
12
11
10
9
8
7
6
5
0 200 400 600 800 1000 1200 1400 1600 1800 2000 2200 2400
Flowrate (gpm)
RPLF4A 10" 12" METER RATED FLOW
20
19
18
17
16
Pressure Loss (psi) 14 10”
15
13
12
11
10
9 12”
8
7
6
5
0 250 500 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 3250 3500 3750 4000 4250 4500
Flowrate (gpm)
Meter Rated Flow
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