Installation Guide

MODEL 350DA 8", 10" & 12" (STANDARD & METRIC)
0
5
10
15
0 1000 2000 3000 4000
FLOW RATES (GPM )
PRESSURE LOSS (PSIG)
0
34
69
103
0.0 63.1 126.2 189.3 252.4
FLOW RATES (l/s)
PRESSURE LOSS (kpa)
MODEL 350ADA 8" & 10" (STANDARD & METRIC)
0
5
10
15
0 1000 2000 3000 4000
FLOW RATES (GPM)
PRESSURE LOSS (PSIG)
0
35
69
104
0.0 63.1 126.2 189.3 252.4
FLOW RATES (l/s)
PRESSURE LOSS (kpa)
MODEL 350A 8" & 10" (STANDARD & METRIC)
0
5
10
15
0 1000 2000 3000 4000
FLOW RATES (GPM)
PRESSURE LOSS (PSIG)
0
35
69
104
0.0 63.1 126.2 189.3 252.4
FLOW RATES (l/s)
PRESSURE LOSS (kpa)
MODEL 350 8", 10" & 12" (STANDARD & METRIC)
0
5
10
15
0 1000 2000 3000 4000
FLOW RATES (GPM)
PRESSURELOSS (PSIG)
0
35
69
104
0.0 63.0
126.0 189.0 252.0
FLOW RATES (l/s)
PRESSURE LOSS (kpa)
ZURN WILKINS
1747 Commerce Way, Paso Robles, CA 93446 Phone:[phone] Fax:[phone]
4
Troubleshooting
IS350-8 (REV. E 6/17)
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 instructions. 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.
SPECIFICATIONS
Maximum working water pressure: 175 PSI
Maximum working water temperature: 140°F
Hydrostatic test pressure: 350 PSI
End connections: Flanged ANSI B16.1 Class 125
Repair Kits
SIZE MODEL 350 CHECKS ONLY
8" RK8-350
10" RK8-350
PROBLEM POSSIBLE CAUSES CORRECTIVE ACTION
1. LEAKING CHECK VALVES 1. Debris on seat or seal ring. 1. Clean seat area
2. Damaged seat area 2. Replace check assembly
3. Damaged seat o-ring 3. Replace seat o-ring
4. Damaged bolt o-ring(s) on check retainer 4. Replace o-ring(s)
2. LOW OR NO FLOW 1. Device installed backwards 1. Verify ow direction arrow
2. Gate valves not fully open 2. Turn handles counterclockwise
3. Low supply pressure 3. Attach pressure gauge to test cock #1 and verify pressure
Capacity thru Schedule 40 Pipe
Pipe size 5 ft/sec 7.5 ft/sec 10 ft/sec 15 ft/sec
2 1/2" 75 112 149 224
3" 115 173 230 346
4" 198 298 397 595
6" 450 675 900 1351
8" 780 1169 1559 2339
10" 1229 1843 2458 3687
12" 1763 2644 3525 5288
Performance Characteristics
®
⃟
Rated Flow (Established by approval agencies)
10" (250mm)
8" (200mm)
12" (300mm)
10" (250mm)
8" (200mm)
10" (250mm)
8" (200mm)
10" (250mm)
8" (200mm)
12" (300mm)
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