Installation Sheet

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 WILKINS’
specications and prevailing governmental & industry standards and codes and upon following these installation instructions.
Failure to do so releases 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
ZURN WILKINS
1747 Commerce Way, Paso Robles, CA 93446 Phone:[phone] Fax:[phone]
ISSM975XL2 (REV. E 7/17)
4
®
www.zurn.com