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CONTROL VALVES 762, 763, 765, 766 AND 767
Important
Provide fire prevention measures and equipment per local regulations.
Flanges with 4 and 8 bolts
•
First round - 30% of final torque (flange sequential order)
•
Second round- 60% of final torque (flange sequential order)
•
Third round - 100% of final torque (flange sequential order)
•
One final time - clockwise or counter clockwise sequentially around the flange
Flanges with 12 or more bolts
•
First round - 20% of final torque (flange sequential order)
•
Second round - 40% of final torque (flange sequential order)
•
Third round - 80% of final torque (flange sequential order)
•
Fourth round - 100% of final torque (sequential order)
•
One final time - clockwise or counter clockwise sequentially around the flange
5.3
Torque values (flanges)
Reference torque values for Daniel Control Valve (ft-lb) flange connections
Table 5-1:
Nominal pipe size
(NPS)
Daniel Class 150
Daniel Class 300
Daniel Class 600
2
90
90
90
3
90
160
160
4
90
160
250
6
160
160
400
8
160
250
550
10
250
400
800
12
250
550
800
16
400
800
1400
5.4
Torque pattern sequences
Cross-pattern tightening sequence when using single tool
Table 5-2:
Nominal pipe size
(NPS)
Daniel Class 150
Daniel Class 300
Daniel Class 600
2
1-3-2-4
1-5-3-7 2-6-4-8
1-5-3-7 2-6-4-8
Installation prerequisites
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Daniel Models 762, 763, 765, 766 and 767 Control Valves