Page 58 - Apollo - 2016 Backflow Prevention Catalog
P. 58
BACKFLOW PREVENTION CATALOG
Flow Curves
Flow Curves: Pressure loss versus flow data as determined by
independent approval agencies. (See Notes on page 71)
DOUBLE CHECK ASSEMBLIES
DC 4SG
DOUBLE CHECK DETECTOR ASSEMBLIES
DCDA 4SG
7.5 7.5 7.5
FT/S FT/S FT/S
(2-1/2") (3") (4")
12
10
Pressure Loss (psi) 8 6 2-1/2” 3”
4 4”
0 100 200 300 400 500 600 700 800
Flowrate (gpm)
7.5 7.5
FPS FPS
(6") (8")
20
Pressure Loss (psi) 15 5 6” 8”
10
0
0 500 1000 1500 2000 2500 3000
Flowrate (gpm)
DOUBLE CHECK ASSEMBLIES
DC 4S (10”- Flanged Internal Connections Only)
DOUBLE CHECK DETECTOR ASSEMBLIES
DCDA 4S
10”
PRESSURE LOSS (PSI)
7.5
FT/S
(10")
Meter Rated Flow FLOWRATE (GPM)
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