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Bolt lengths have been calculated <strong>to</strong> accommodate<br />
the standoff difference shown in Figure 4-4 for 6B and<br />
6BX flanges. Also illustrated in Figure 4-4, are the point<br />
heights for stud bolts. Point heights are not included in<br />
the calculations for stud bolt lengths.<br />
The lengths for point heights in inches are as follows:<br />
Bolt Diameter Maximum Point Height<br />
1/2 <strong>to</strong> 7/s-in. Vs-in.<br />
7/8 <strong>to</strong> 1VB 3/16<br />
1118 <strong>to</strong> 15/8 1/4<br />
1% <strong>to</strong> 1718 5/16<br />
17/8 <strong>to</strong> 21/4 3/8<br />
Dual Completion <strong>Flan</strong>ges<br />
Figure 4-5 shows a typical 5,000-1b psi-working-pres-<br />
sure segmented flange used for dual completions. Table<br />
4-15 shows the bolt requirements, API ring gasket num-<br />
ber, and the wrench size required for the bolts.<br />
Multiple Completion <strong>Flan</strong>ges<br />
Figure 4-6 shows two details of a typical 5,000-1b psi-<br />
working-pressure segmented flange used for triple or<br />
quadruple completions. Table 4-16 lists the cap screw re-<br />
quirements, the API ring gasket number, and the hex<br />
wrench size for the cap screws.<br />
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