VALVE TECHNICAL SPECIFICATIONS
  VALVES


TECHNICAL SPECIFICATIONS

TECHNICAL SPECIFICATIONS RELEVANT TO THE FOLLOWING VALVES:
  • Manual Isolation Valve
  • Pump Control Valve
  • Non Return Valve
  • Safety Isolation Valve (Excess Flow) High Pressure
  • Dam Level Control Valve
  • Turbine Control Valve
  • Pressure Reducing Valves
    • Regulating Valve
    • External Ratio Valve
    • Multi Stage Ratio Valve
SPECIFICATIONS
50NB
80NB
100NB
150NB
200NB
250NB
300NB
HPE Hub Face to Face Dimensons
mm 245 365 430 510 690 880 1100
Class 600 HPE Hub Face to Face Dimensions
mm 269 401 489 586 788 940 1175
Class 900 HPE Hub Face to Face Dimensions
mm 294 414 502 602 804 952 1200
Class 1500 HPE Hub Face to Face Dimensions
mm 294 433 520 656 861 1029 1290
Handle torque at 20MPa
Nm 25 30 30 30 45 45 45
Weight (Nominal)
kg 15 45 80 160 365 850 1600

 

VALVE Cv DATA
Q= Cv * sqrt(deltaP)
deltaP = (Q/Cv)^2
1 MPa = 102 m head
ISOLATION AND CONTROL VALVES
NB
50NB
80NB
100NB
150NB
200NB
250NB
300NB
Cv (l/s per MPa^0.5)
26
59
100
197
586
977
1152
Cv (USgpm per psi^0.5)
34
78
132
259
772
1286
1516
Flow (l/sec)
Approximate pressure drop (m head)
5
3.8
0.7
10
15.1
2.9
1.0
15
34.1
6.5
2.3
0.6
20
61
11.6
4.1
1.1
22
73
14.0
4.9
1.3
25
95
18
6.4
1.6
30
136
26
9.2
2.4
40
242
46
16.3
4.2
0.5
50
378
72
25
6.6
0.7
60
545
104
37
9.5
1.1
0.4
64
620
118
42
10.8
1.2
0.4
0.3
70
742
142
50
13
1.5
0.5
0.4
80
969
185
65
17
1.9
0.7
0.5
90
1226
234
83
21
2.4
0.9
0.6
100
1514
289
102
26
3.0
1.1
0.8
113
1933
369
130
34
3.8
1.4
1.0
120
416
147
38
4.3
1.5
1.1
140
567
200
52
5.8
2.1
1.5
160
740
261
67
8
2.7
2.0
177
906
319
83
9
3.3
2.4
180
937
330
85
10
3.5
2.5
200
1156
408
105
12
4.3
3.1
220
1399
493
127
14
5.2
3.7
240
1665
587
152
17
6.2
4.4
255
1880
663
171
19
6.9
5.0
260
1954
689
178
20
7.2
5.2
280
2266
799
206
23
8.4
6.0
300
917
237
27
9.6
6.9
320
1043
270
30
10.9
7.9
340
1178
304
34
12.4
8.9
360
1321
341
38
13.8
10.0
380
1471
380
43
15.4
11.1
400
1630
421
47
17.1
12.3

Please Note:

  • In the interest of improving products HPE reserves the right to change any specifications without notice
                 
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