Dimensions/weights (approximate) in mm and kg A (EN 558 part 1, series 49) B Pipeline ancillaries Disc, split disc and wafer check valves
10
C
D
E
Weight
DN15
16.0
53
15
65
23.0
0.18
DN20
19.0
63
20
72
28.0
0.27
DN25
22.0
72
25
78
33.8
0.40
DN32
28.0
84
32
93
41.8
0.67
DN40 DN50 DN65 DN80
31.5
94
40
104
49.8
0.90
40.0
109
50
115
59.8
1.45
46.0
129
65
138
75.8
2.14
50.0
144
80
152
90.8
2.69
PN16
60.0
164
100
171
111.8
4.36
DN100
PN40
60.0
169
100
174
111.8
4.36
Kv values DN 15 20 25 32 40 50 65 80 100 Kv 4.4 6.8 10.8 17 26 43 60 80 113 For conversion: Cv (UK) = Kv x 0.963 Cv (US) = Kv x 1.156 Opening pressures in mbar Differential pressures with zero flow for standard and high temperature springs. Flow direction DN 15 20 25 32 40 50 65 80 100 25 25 25 27 28 29 30 31 33 22.5 22.5 22.5 23.5 24.5 24.5 25 25.5 26.5 20 20 20 20 20 20 20 20 20 Where lowest opening pressures are required, valves without springs can be installed in vertical pipes with bottom-to-top flow. Without spring 2.5 2.5 2.5 3.5 4 4.5 5 5.5 6.5
D
7.5.25
B
E
10.5 34
A
Heavy duty springs approximately 700 mbar
C
TI-P601-01 CMGT Issue 13
Page 4 of 5
DCV8 Disc Check Valve
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