Pipeline ancillaries Disc, split disc and wafer check valves
10
Kv values DN
15
20
25
32
40
50
65
80
100
For conversion: C v (UK) = K v x 0.963 C v (US) = K v x 1.156
Kv
4.4
6.8
10.8
17
26
43
60
80
113
Opening pressures in mbar Differential pressures with zero flow for standard and high temperature springs.
DN
15
20
25
32
40
50
65
80
100
Flow direction
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
Heavy duty springs approximately 700 mbar
Dimensions/weights (approximate) in mm and kg Size A B C D E FWeight 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 101.0 85 79 31.5 65.5 40 0.74 DN50 115.0 95 93 40.0 77.0 50 1.25 DN65 142.0 115 113 46.0 97.5 65 1.87 DN80 154.0 133 128 50.0 111.5 80 2.42 DN100 184.0 154 148 60.0 130.0 100 3.81
A
7.5.9
10.5 12
B E
D
C F
TI-P134-50 CMGT Issue 12
Page 4 of 5
DCV3, DCV3LT and DCV3 Food+ Disc Check Valves
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