Installation Guide

ZURN WILKINS
1747 Commerce Way, Paso Robles, CA 93446 Phone:[phone] Fax:[phone]
IS950XLT2 (REV. E 8/17)
4
0
20 60
80
0
5
10
15
0
50
100150
200
250
5
10
15
40
0
Rated Flow (Established by approval agencies)
FLOW RATES (GPM)
PRESSURE LOSS (PSIG)
69
PRESSURE LOSS (kpa)
FLOW RATES (l/s)
MODEL 950XLT2 3/4", 1", 1 1/4", 1 1/2" & 2" (STANDARD & METRIC)
35
3/4" (20mm)
1" (25mm)
1 1/4" (32mm) 1 1/2" (40mm)
2" (50mm)
103
15.8
12.6
9.56.3
3.25.0
3.82.52
1.26
PROBLEM
1. LEAKING CHECK VALVES
2. LOW OR NO FLOW
CORRECTIVE ACTION
1. Clean seat and seal ring area
2. Replace seat
3. Replace seat o-ring
1. Verify ow direction arrow
2. Turn handles counterclockwise
3. Attach pressure gauge to test cock #1
and verify pressure
POSSIBLE CAUSES
1. Debris on seat or seal ring
2. Damaged seat
3. Damaged seat o-ring
1. Device installed backwards
2. Shut-off valves or valve upstream may
not be fully open
3. Low supply pressure
Troubleshooting
Performance Characteristics
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.
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
SPECIFICATIONS
Maximum working water pressure: 175 PSI
Maximum working water temperature: 180°F
Hydrostatic test pressure: 350 PSI
End connections: Threaded ANSI B1.20.1
www.zurn.com
®