MODEL 450DA 4" & 6" (STANDARD & METRIC)
0
5
10
15
0
400
800
1200
1600
FLOW RATES (GPM)
PRESSURE LOSS (PSIG)
0
34
69
103
0.0
25.2
50.5
75.7
100.9
FLOW RATES (l/s)
PRESSURE LOSS (kpa)
MODEL 450 4" & 6" (STANDARD & METRIC)
0
5
10
15
0
400
800
1200
1600
FLOW RATES (GPM)
PRESSURE LOSS (PSIG)
0
34
69
103
0.0
25.2
50.5
75.7
100.9
FLOW RATES (l/s)
PRESSURE LOSS (kpa)
MODEL 450 2 1/2" & 3" (STANDARD & METRIC)
0
5
10
15
0
200
400
600
800
FLOW RATES (GPM)
PRESSURE LOSS (PSIG)
0
34
69
103
0.0
12.6
25.2
37.9
50.5
FLOW RATES (l/s)
PRESSURE LOSS (kpa)
WILKINS, a ZURN company
1747 Commerce Way, Paso Robles, CA 93446 Phone:805/238-7100 Fax:805/238-5766
IS450 (REV. 11/10)
4
a company
®
®
Troubleshooting
Proper performance is dependent upon licensed, qualified personnel performing regular, periodic testing according to WILKINS' specifications 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.
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 flow 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
Performance Characteristics
⃟
Rated Flow (Established by approval agencies)
2 1/2"
(65mm)
3"
(80mm)
4"
(100mm)
6"
(150mm)
4"
(100mm)
6"
(150mm)
