Installation Guide

4
ZURN WILKINS
1747 Commerce Way, Paso Robles, CA 93446 Phone:[phone] Fax:[phone]
ISSM975XL2 (REV. 4/13)
SPECIFICATIONS
Maximum working water pressure 175 PSI
Maximum working water temperature 180°F
Hydrostatic test pressure 350 PSI
End connections Threaded NPT
ANSI B1.20.1
Performance Characteristics
Capacity thru Schedule 40 Pipe
Pipe size 5 ft/sec 7.5 ft/sec 10 ft/sec 15 ft/sec
1/8" 1 1 2 3
1/4" 2 2 3 5
3/8" 3 4 6 9
1/2" 5 7 9 14
3/4" 8 12 17 25
1" 13 20 27 40
1 1/4" 23 35 47 70
1 1/2" 32 48 63 95
2" 52 78 105 167
Proper performance is dependent upon licensed, qualied personnel performing regular, periodic testing according to ZURN
WILKINS’ specications and prevailing governmental & industry standards and codes and upon following these installation in-
structions. Failure to do so releases ZURN WILKINS of any liability that it might otherwise have with respect to that device. Such
failure could also result in an improperly functioning device.
0
3
6
9
12
15
5
10
15
20
Rated Flow (Established by approval agencies)
FLOW RATES (GPM)
PRESSURE LOSS (PSIG)
69
PRESSURE LOSS (kpa)
FLOW RATES (l/s)
MODEL 975XL2 1/4", 3/8" & 1/2" (STANDARD & METRIC)
35
1/2" (15mm)
103
0.95
0.76
0.570.38
0.19
137
3/8" (9mm)
1/4" (6mm)
0
20
40
60
80
5
10
15
20
0
50
100
150
200
250
5
10
15
20
Rated Flow (Established by approval agencies)
FLOW RATES (GPM)
PRESSURE LOSS (PSIG)
69
PRESSURE LOSS (kpa)
FLOW RATES (l/s)
MODEL 975XL2 3/4", 1", 1 1/4", 1 1/2" & 2" (STANDARD & METRIC)
35
3/4" (20mm)
1" (25mm)
1 1/4" (32mm)
2" (50mm)
103
15.8
12.6
9.56.3
3.25.0
3.82.52
1.26
1½"
(40mm)
137
FLOW CHARACTERISTICS
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