FRICTION LOSS DATA
Length Outlet
Maximum number of 90° bends
(at 4" bend radius) Equivalent Length of 1" Schedule 40 pipe
Inches/mm Inches
FM*
ft/m
UL+
ft/m
31
½ 3 9.6/2.9 27/8.2
790
¾ 3 8.2/2.5 33/10.0
48
½ 3 17.1/5.21 53/16.1
1220
¾ 3 16.5/5.0 55/16.7
60
½ 3 21.4/6.5 68/20.7
1525
¾
3 20.1/6.1 63/19.2
72
½ 3 27.3/8.3 73/22.2
1830
¾ 3 26.2/8.0 76/23.1
This product has been tested and Approved by FM Global for use in wet, dry and preaction systems per
NFPA 13, 13R and 13D. FM 1637 standards for safety include, but are not limited to, pressure cycling,
corrosion resistance, flow characteristics, vibration resistance, leakage, mechanical and hydrostatic strength.
* Series AQB, at 7" minimum bend radius and straight reducers.
+ Series AQU, at 4" minimum bend radius and straight reducers.
Note: Differences of equivalent lengths are due to the different test methods per UL 2443 and FM
1637 standards. Please refer to these standards for further details of their respective friction loss test
Length Outlet Equivalent Length of 1" Schedule 40 Pipe
Inches/mm Inches ft/m
31
½ 6.4/1.9
790
¾ 5.9/1.8
48
½ 10.2/3.1
1220
¾
10.3/3.1
60
½ 12.5/3.8
1525
¾
13.1/4.0
72
½ 16.7/5.0
1830
¾ 17.0/5.2
Standard Straight Reducer - 5.5"
Standard 90° Elbow Reducer - Short
Standard 90° Elbow Reducer - Long
Length Outlet Equivalent Length of 1" Schedule 40 Pipe
Inches/mm Inches ft/m
31
½ 6.8/2.1
790
¾ 6.3/1.9
48
½ 10.6/3.3
1220
¾
10.7/3.3
60
½ 12.9/3.9
1525
¾
13.5/4.1
72
½ 17.1/5.2
1830
¾ 17.4/5.3
10.85_2
AquaFlex
®
Stainless Steel
Sprinkler Fittings
10.85
FIRE PROTECTION PRODUCTS – ACCESSORIES
www.victaulic.com
VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2010 VICTAULIC COMPANY. ALL RIGHTS RESERVED.
REV_F
NOTE: Elbow reducer friction loss values based upon FM testing of Series AQB Braided Hose.
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