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ZURN PEX, INC.
HIGHWAY 11 EAST, COMMERCE, TEXAS, U.S.A. 75428 • PHONE: 855-ONE-ZURN (855-663-9876) • FAX: 903-886-2583 • www.zurn.com
Zurn PEX
®
Plumbing Installation Guide
Fitting Equivalent Length (Feet of Tube)
Zurn PEX XL and
Tubing Size
Zurn PEX DZR Fitting
3/8
"
1/2
"
3/4
"
1
"
1-1/4
"
1-1/2
"
2
"
Coupling
2.7
2.8
3.5
1.0
0.9
0.5
2.6
Elbow
9.2 8.0 9.2 7.8 10.0 12.5 22.1
Tee - Run
3.3
2.4
3.5
2.7
1.0
0.0
3.5
Tee
-
Branch 9.6 7.1 8.6 5.5
9.0 12.3 19.6
Fitting Equivalent Length (Feet of Tube)
Tubing Size
Zurn PEX CR Fitting
1/2
"
3/4
"
1
"
Coupling
6.4
6.9
4.1
90°
Elbow
13.5 15.5 17.4
Tee - Run
5.9
7.0
6.2
Tee - Branch
12.3
14.9
16.1
Pressure Drop for Zurn PEX Tube – psi/foot
3/8
"
1/2
"
3/4
"
1
"
Pressure Velocity Pressure Velocity Pressure Velocity Pressure Velocity
GPM
Drop (ft/sec) Drop (ft/sec) Drop (ft/sec) Drop (ft/sec)
0.5
0.020
1.7
0.004
0.9
0.001
0.5
0.000
0.3
1
0.070
3.3
0.016
1.8
0.003
0.9
0.001
0.5
1.5
0.149
5.0
0.034
2.7
0.006
1.4
0.002
0.8
2
0.254
6.7
0.057
3.6
0.011
1.8
0.003
1.1
2.2
0.303
7.3
0.069
4.0
0.013
2.0
0.004
1.2
2.5
0.384
8.3
0.087
4.5
0.016
2.3
0.005
1.4
3
0.538
10.0
0.122
5.4
0.023
2.7
0.007
1.6
4
0.207
7.2
0.039
3.6
0.011
2.2
5
0.313
9.1
0.058
4.5
0.017
2.7
6
0.439
10.9
0.082
5.4
0.024
3.3
7
0.583
12.7
0.109
6.4
0.032
3.8
8
0.139
7.3
0.041
4.4
9
0.173
8.2
0.051
4.9
10
0.210
9.1
0.062
5.5
11
0.251 10.0 0.074
6.0
12
0.294 10.9 0.087
6.6
13
0.341 11.8 0.101
7.1
14
0.116
7.7
15
0.132
8.2
16
0.148
8.8
17
0.166
9.3
18
0.184
9.9
19
0.204
10.4
20
0.224
11.0
21
0.245
11.5
22
0.267
12.1
System Sizing and Design
The following tables can be used to assist the designer when
designing a plumbing system using Zurn PEX.
Equivalent Tubing Length:
Along with the pressure loss through
the supply tubing, any pressure loss through any other components
in the system must be taken into account, such as fittings, shut off
valves, etc. Below is a chart that shows the equivalent length of tube
in feet per one fitting for Zurn fittings.
Note:
Some local codes require that water velocity through tubing
cannot exceed 8 ft/s. This cut-off is highlighted on the Pressure Drop
for Zurn PEX Tubing. The maximum velocity on this chart is 12 ft/s.
This pressure loss in this chart is represented in PSI/foot.
