National Tools Pty Ltd
Head Office
Unit 6, 166 Kewdale Road Kewdale
Western Australia 6106
Queensland Office
19 Domino Cres,
Andergrove, Mackay Qld 4740
Freecall 1800 448 422 or Qld 0400 411 177
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NT is your tooling partner.
BOLT TENSIONING OPTIMUS SUB-SEA     Back to Bolt Tensioning Main Page

A specially designed system of bolt tensioning equipment to suit the demanding requirements of divers operating in harsh subsea enviroments. Tentec subsea tensioners have been used in the North sea since 1991 and have a proven reliability and safety record

 

The Optimus system has many time saving and safety features:-

Self energizing seals which eradicate the need for time consuming seal adjustments.

30mm of piston stroke means more tensioning before re-setting the tool

 

Each subsea tensioner has a dual hose connection meaning simpler hose build

The Optimus range of tensioners incorperate a safety "over stroke" device

technical data  

 

TOOL
PART No
THREAD
PART No
FORCE
H P A
STROKE
Wt
A
B
C
D
E
F
Inch
In
mm
Metric
Kn
Ton
In2
mm2
mm
kg
mm
1
1MTST:1000
1
24
1MTST:0024
245
24.58
2.53
1634
30
3.2
82
25
218
120
144
61
1MTST:1125
1 1/8
27
1MTST:0027
245
82
25
218
120
144
64
2
2MTST:1250
1 1/4
33
2MTST:0033
379.2
38
3.92
2532
30
4.8
100
28
240
131
159
75
2MTST:1375
1 3/8
36
2MTST:0036
379.2
100
28
240
131
159
78
3
3MTST:1500
1 1/2
39
3MTST:0039
552
55.4
5.71
3688
30
6.2
112
35
249
133
166
84
3MTST:1625
1 5/8
42
3MTST:0042
552
112
35
249
133
166
87
4
4MTST:1750
1 3/4
45
4MTST:0045
753
75.6
7.79
5027
30
8.5
128
41
271
140
178
95.5
4MTST:1875
1 7/8
48
4MTST:0048
753
128
41
271
140
178
98
5
5MTST:2000
2
52
5MTST:0052
1076
108
11.12
7174
30
12.2
148
48
296
152
198
121
5MTST:2250
2 1/4
56
5MTST:0056
1076
148
48
296
152
198
116
6
6MTST:2500
2 1/2
64
6MTST:0064
1644
165
17.00
10968
30
19.2
176
58
335
168
224
136
6MTST:2750
2 3/4
72
6MTST:0072
1644
176
58
335
168
224
141
7
7MTST:3000
3
76
7MTST:0076
2525
253.4
26.10
16870
30
29
216
53
373
192
260
162
7MTST:3500
3 1/2
90
7MTST:0090
2525
216
53
373
192
260
173
MAXIMUM PRESSURE
21750 PSI /1500 bar

subsea applications

  • Pipe Line flanges
  • Riser Clamps
  • Repair Clamps
  • Loading Columns
  • Swivel bearing joints
  • Subsea valve bonnet bolts
  • Template Flanges
  • Pipeline repairs
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