Page 64 - 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 4An

7.5 7.5 7.5
FT/S FT/S FT/S
(2-1/2") (3") (4")
30
PRESSURE LOSS (PSI) 20 2-1/2" 3" 4"
25

15
10
5
00 50 100 150 200 250 300 350 400 450 500 550 600 650 700 750 800
RP4AN FLOWRATE (GPM)

RPDA 4AN

7.5
7.5
RPDA2 4AN 25 FT/S FT/S
(6")
(8")
PRESSURE LOSS (PSI) 20 6" 8"
15
10
5
0 0
200
FLOWRATE (GPM) 400 600 800 1000 1200 1400 1600 1800 2000 2200 2400

7.5 7.5
FT/S FT/S
(10") (12")
25
20 10" 12"
PRESSURE LOSS (PSI) 10
15

5
0
400
00
FLOWRATE (GPM) 800 1200 1400 1800 2200 2600 3000 3400 3800 4200 4600

Meter Rated Flow
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