44
Control systems Pressure reducing/surplussing valves
Kv values The Kv maximum values shown below are full capacities and should be used for safety valve sizing purposes only. DN15LC DN15 DN20 DN25 DN32 DN40 DN50 For conversion:
Cv (UK) = Kv x 0.963 Cv (US) = Kv x 1.156
1.0
2.8
5.5
8.1
12.0
17.0
28.0
Note: Where the internal balance pipe is used the valve capacity will be reduced.
Dimensions/weights (approximate) in mm and kg
A A1
DP27, DP27E and DP27Y
E
4.6 174
D
F
B
Screwed
Flanged
Weight
BS 10 H PN16/25 ASME 300
BS 10 F ASME 150
JIS 10/16
Size
A
A1
A1
A1
A1
A1
A1 B D E F Screwed Flanged
DN15LC
160
-
130 126.6
117
120.2 122 185 406 276 130 13.2
14.0
DN15
160
-
130 126.6
117
120.2 122 185 406 276 130 13.2
14.0
DN20
160
-
150
-
133 139.4 142 185 406 276 130 13.2
14.9
DN25
180
160
160 160.0
-
160.0 152 207 430 282 148 14.2
17.2
DN32
-
180
180 180.0
-
176.0 176 207 430 282 148
-
18.2
DN40 DN50
-
200
200 200.0
-
199.0 196 255 475 297 178
-
30.2
-
230
230 230.0
-
228.0 222 255 475 297 178
-
32.2
TI-P470-01 CTLS Issue 13
Page 10 of 16
DP27, DP27E, DP27G, DP27GY, DP27R & DP27Y Pilot Operated Pressure Reducing Valves with SG Iron Bodies
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