10.95
8507 Rev A Updated 11/2015 © 2015 Victaulic Company. All rights reserved.
5.0 PERFORMANCE – FRICTION LOSS DATA
Series AH1 Braided Hose with Stra ight 5.75" Reducers
Style AB1, AB2, AB4, and AB10 Brackets
Length of
Stainless Steel
Flexible Hose
Outlet Size
Series AH2 Hose
Equivalent Length
of 1"/33.7 mm
Sch. 40 Pipe (C=120)
Maximum
Number of
90° Bends at 3"/51 mm
Bend Radius
inches/mm
inches/mm/type
feet/meters
31/775
½
"
/15/Straight
52/15.8
3
¾
"
/20/Straight
55/16.8
3
36/900
½
"
/15/Straight
63/19.2
4
¾
"
/20/Straight
66/20.1
4
48/1200
½
"
/15/Straight
78/23.8
4
¾
"
/20/Straight
80/24.4
4
60/1500
½
"
/15/Straight
88/26.8
4
¾
"
/20/Straight
90/27.4
4
72/1800
½
"
/15/Straight
112/34.1
5
¾
"
/20/Straight
118/36.0
5
Series AH1 Braided Hose Equivalent Length Design Guide
Equivalent length values at various numbers of 90 degree bends at 3"/51 mm center line bend radius
Length of
Stainless
Steel Flexible
Hose
Outlet
Size
1
Bend
2
Bends
3
Bends
4
Bends
5
Bends
inches/mm
inches/mm
feet/meters
feet/meters
feet/meters
feet/meters
feet/meters
31/775
½
"
/15
32/9.8
42/12.8
52/15.9
N.A
N.A
¾
"
/20
33/10.1
44/13.4
55/16.8
N.A
N.A
36/900
½
"
/15
33/10.1
43/13.1
53/16.2
63/19.2
N.A
¾
"
/20
36/11.0
46/14.0
56/17.1
66/20.1
N.A
48/1200
½
"
/15
46/14.0
57/17.4
68/20.7
78/23.8
N.A
¾
"
/20
51/15.5
60/18.3
71/21.6
88/26.8
N.A
60/1500
½
"
/15
56/17.1
67/20.4
77/23.5
88/26.8
N.A
¾
"
/20
58/17.7
69/21.0
80/24.4
90/27.4
N.A
72/1800
½
"
/15
69/21.0
79/24.1
91/27.7
102/31.1
112/34.1
¾
"
/20
73/22.6
84/25.6
95/29.0
106/32.3
118/36.0
NOTES:
• Values for use with 5.75" straight reducers.
How to use this Design Guide:
• For some systems, it may be advantageous for the designer to calculate the system hydraulics using shorter equivalent lengths associated with fewer than the
maximum allowable number of bends. In this case, the designer may select a design number of bends for the job and use the associated equivalent length
from the design guide to determine the system hydraulics.
• It is possible that the actual installed condition of some of the flexible drops may have more bends than the designer selected. When this happens, the design
guide may be used to find equivalent lengths based on the actual installed number of bends for particular sprinkler installations. The system hydraulics can be
recalculated using actual equivalent lengths to verify the performance of the system.
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