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Performance Chart
Code CALEFFI
Flanged [mm]
DN
32
Screwed [in]
DN 1 1/4" 1 1/2"
Hytol NGE
Kv (m3/h)
Cv (l/s) @ 1 bar
z (-)
Normal Flow (l/s)
@ velocity 1 m/s
@ velocity 3 m/s
Max. Flow (l/s)
Continious @ v=4 m/s
Intermittent@ v=5.5 m/s
For an appropriate operation, valve
should be sized at 70% total Lift
Performance
Maxiumum working temperature: 65°C
Maximum upstream pressure: 16 bar
Downstream setting pressure range: 2÷14 bar
40
50
65
80
2"
2 1/2"
3"
-
-
32
43
58
-
-
9
12
16
-
-
9.5
15.3
19.8
1.6
2.7
4
-
-
to
to
to
6
10
15
-
-
8
13
20
-
-
11
18
28
Q
: rate of fl w (m3/h)
Kv
: fl w coeffici t (m3/h)
Cv
: fl w coeffici t (l/s)
: head loss (bar)
Dp
Fast Lift : 10% Cv = 25% Lift
% Cv (flow coefficient)
100
125
150
200
250
-
-
-
-
-
119
162
209
479
799
33
45
58
133
222
11.3
14.9
18.6
11.2
9.8
6
10
14
25
39
to
to
to
to
to
24
37
53
94
147
31
49
71
126
196
43
67
97
173
270
: head loss (m)
DH
v
: average pipe velocity (m/s)
g
: gravitational constant (9.81m/s2)
: resistance coeffici t (-)
z
31
Serie 578
Quick Valve Selection
300
350
400
450
500
-
-
-
-
-
1292
1638
1789
2298
3049
359
455
497
638
847
7.8
8.9
12.8
12.4
10.8
56
77
100
127
157
to
to
to
to
to
212
289
377
477
589
283
385
502
636
785
389
529
691
874
1079
600
-
3222
895
20.0
226
to
848
1130
1554
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