Sterling A0552321 Manual Do Utilizador
Pump Tanks
Chapter 6: Appendix
22 of 36
Figure 2: Standard Pumps and Trim Based on Cooling Tower Capacities
(Flow Based on 3 gpm per Ton)
American Standards
American Standards
Capacity Trim
Process
Recirculating
Nominal Nominal
flow size
pump
pump
cooling tower tons
gallons
inches
hp
hp
20 60 2½” 5
3
30 90 2½” 7½
3
40 120 3”
7½
5
50 150 3”
10
5
60 180 4”
10
5
75 225 4”
15
7½
80 240 4”
15
7½
100 300 4”
20
7½
125 375 6”
20
10
150 450 6”
25
10
175 525 6”
30
15
200 600 6”
30
15
250 750 6”
40
20
300 900 6”
50
20
Pump
horsepower
1½ 3 5 7½ 10 15 20 25 30 40 50 60
Amp draw 460/3/60
2.6
4.8
7.6
11
14
21
27
34
40
52
65
77
Shipping weight (lbs.)
• P1
— 95 115 125 165 180 300 310 400 465 710 730
• P2
60 90
115
275
320
425
510
630
670
— — —
Trim size (inches)
2
2½
3
4
6
8
Maximum flow (gpm)
50
90
160
320
900
2,000
Shipping weight (lbs.)
25
35
50
75
120
165
Metric Standards
Capacity Trim
Process
Recirculating
Nominal refrigeration
Nominal flow
size
pump
pump
Tower water, Kcal/hr
liters
mm Dia.
hp
kW
hp
kW
75,600 227
64
5
3.73
3
2.24
113,400 341
64
7½
5.59
3
2.24
151,200 454
76
7½
5.59
5
3.73
189,000 568
76
10
7.50
5
3.73
226,800 682
102
10
7.50
5
3.73
283,500 852
102
15
11.19
7½
5.59
302,400 909
102
15
11.19
7½
5.59
378,000 1,135
102
20
14.91
7½
5.59
472,500 1,419
152
20
14.91
10
7.50
567,000 1,703
152
25
18.64
10
7.50
661,500 1,987
152
30
22.37
15
11.19
756,000 2,271
152
30
22.37
15
11.19
945,000 2,839
152
40
29.93
20
14.91
1,134,000 3,406
152
50
37.29
20
14.91
Pump
horsepower/kW
horsepower/kW
1½/1.12 3/2.24 5/3.73 7½/5.59 10/7.5 15/11.19 20/14.91 25/18.64 30/22.37 40/29.93 50/37.29 60/44.7
4
Amp
draw
460/3/60 2.6
4.8
7.6
11 14
21 27 34 40 52 65 77
Ship weight (Kg)
• P1
— 44 53 57 75 82 137 141 182 211 323 332
• P2
28 41 53
125 146
193 232 286 304 — — —
Trim size (inches)
2
2½
3
4
6
8
Maximum flow (lpm)
189
340
624
1,211
3,406
7,570
Shipping weight (Kg)
12
16
23
35
55
75