Pipeline ancillaries Disc, split disc and wafer check valves
10
Dimensions/weights (approximate) in mm and kg Size A B C
D
E
F
Weight
DN15
60.0
43
38
16.0
29.0
15
0.13
DN20
69.5
53
45
19.0
35.7
20
0.19
DN25
80.5
63
55
22.0
44.0
25
0.32
DN32
90.5
75
68
28.0
54.5
32
0.55
DN40 DN50 DN65 DN80 DN100
101.0
85
79
31.5
65.5
40
0.74
115.0
95
93
40.0
77.0
50
1.25
142.0
115
113
46.0
97.5
65
1.87
154.0
133
128
50.0
111.5
80
2.42
184.0
154
148
60.0
130.0
100
3.81
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
A
7.5.4
B E
Heavy duty springs approximately 700 mbar
10.5 7
D
C F
TI-P134-05 CMGT Issue 11
Page 3 of 4
DCV1 Disc Check Valve
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