23
5
/
16
"
18
15
6
18
20
16
10
4
12
12
11
⅜"
16
26
10
22
34
28
15
6
18
20
16
½"
13
61
23
73
80
65
37
14
44
47
39
⅝“
11
118
44
141
155
126
71
26
85
92
76
¾“
10
206
77
245
270
219
122
45
145
160
130
⅞“
9
328
122
328
429
349
194
72
194
255
206
1“
8
488
182
488
639
519
289
108
289
378
307
1⅛“
8
706
263
578
925
751
414
154
339
544
440
1¼“
8
981
366
803
1285
1043
571
213
467
750
607
1⅜“
8
1320
492
933
1727
1404
763
284
479
1002
812
1½“
8
1727
644
1083
2261
1837
994
370
624
1305
1057
1⅝“
8
2211
824
1387
2894
2352
1266
472
794
1527
1347
1¾“
8
2777
1035
1742
3636
2954
1585
591
994
2080
1686
1⅞“
8
3433
1280
2153
4493
3651
1952
728
1224
2563
2076
2“
8
4183
1559
2624
5476
4449
2373
884
1489
3114
2524
2¼“
8
5997
2235
3762
7851
6379
3375
1258
2117
4418
3590
2½“
8
8271
3083
5188
10828
8797
4635
1728
2907
6068
4930
2¾“
8
11117
4144
6973
14591
11824
6208
2314
3894
8148
6603
3“
8
14481
5397
9084
19007
15403
8064
3006
5058
10583
8577
3¼“
8
18462
6881
11581
24232
19637
10256
3823
6433
13461
10909
3½“
8
23114
8615
14499
30336
24585
12812
4775
8037
16817
13627
3¾“
8
28485
10617
17868
37388
30298
15762
5875
9887
20688
16765
⅜” NPT
18
61
½" NPT
14
68
¾" NPT
14
75
1” NPT
11½
88
KTM
VIRGO SERIES N TRUNNION MOUNTED BALL VALVES
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
FOR IMPERIAL SERIES (Nm)
Thread size
(Inch)
TPI
Non-coated bolts / nuts
Coated bolts / nuts
Low resistance bolt /
stud material
High resistance bolt /
stud material
Low resistance bolt /
stud material grade
High resistance bolt /
stud material
L7M, B7M
B8M
Class 1
B8M
Class 2
L7, B7
Gr 660
L7M, B7M
B8M
Class 1
B8M
Class 2
L7, B7
Gr 660
FOR NPT PLUG THREADS
Plug size
Thread per inch
Approx. torque (Nm)
The year of manufacture
Refer name plate affixed to the valve
Essential maximum / minimum allowable limits
Refer name plate affixed to the valve
The normal size for piping DN
Refer name plate affixed to the valve
Test pressure applied in bar and date
Refer tag plate affixed to the valve
Tare mass in kg
Refer tag plate affixed to the valve
The fluild group
Refer tag plate affixed to the valve
16 INFORMATION FOR PED 2014/68/EU COMPLIANT VALVE
NOTES
1. Torque values given for NPT threads are only for
reference, it may change depending upon accuracy
of thread profile, sealing requirement, nature of
the sealant used etc.
2. As a general guideline, after hand-tight
engagement, tighten 1-3 full turns so that you get
'leak proof' joint.
15 SERVICE OF VALVES WITH API MONOGRAM
In case of repair and service of “API monogram” valve, service engineer shall consult Head- QA
for any further actions.
