Series nks-c, nksp-c, nkl-c, nklp-c – Richter NKLP-C Series Butterfly Valves User Manual
Page 7
Series NKS-C, NKSP-C, NKL-C, NKLP-C
Page 7
9520-072-en
Revision 01
TM 8176
Edition 03/2011
Pipe screws flanges ISO/DIN drilled to ASME Class
150, through hole
NKS-C+NKSP-C from size DN 350 (14") upwards
with lug-style body and through hole
Flange nom.
size
Through hole
Tightening
torque
[mm]
[inch]
[mm]
[Nm]
[in-lbs]
50
2“
4 x 19
35
310
65
2½“
4 x 19
40
354
80
3“
4 x 19
45
398
100
4“
8 x 19
50
442
125
5"
8 x 22
60
532
150
6“
8 x 22
70
620
200
8“
8 x 22
85
753
250
10“
12 x 26
95
842
300
12“
12 x 26
105
931
350
14“
12 x 29
145
1285
400
16“
16 x 29
165
1463
450
18"
16 x 32
185
1640
500
20"
20 x 32
215
1906
600
24"
20 x 35
230
2039
700
28"
28 x 35
280
2482
---
30"
28 x 35
300
2660
800
32"
28 x 42
380
3369
900
36"
32 x 42
460
4078
1000
40"
36 x 42
500
4433
Body screws
Hex. socket head screws for lug-style and wafer-style
bodies
Nom. size
Hex. socket
head screw
Tightening
torque
[mm]
[inch]
[ISO/DIN]
[Nm]
[in-lbs]
50
2“
M6x25
19.3
171
65
2½“
M6x25
19.3
171
80
3“
M8x30
46.9
415
100
4“
M10x35
93
824
125
5"
M10x35
93
824
150
6“
M10x35
93
824
200
8“
M12x40
160
1418
250
10“
M12x50
160
1418
300
12“
M16x55
395
3502
350
14“
M16x55
395
3502
400
16“
M16x55
395
3502
450
18"
M16x55
395
3502
500
20"
M16x55
395
3502
600
24"
M16x55
395
3502
700
28"
M16x80
395
3502
---
30"
M16x80
395
3502
800
32"
M20x90
773
6853
900
36"
M20x90
773
6853
1000
40"
M20x90
773
6853