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DRAWN BY : E Keerthika
APPROVED BY : Jay Neill
20. The torque pins will be installed into the appropriate holes in the adapter plate and bonnet. Use a metal
hammer to start the pins and then use a pneumatic hammer to drive them flush with the adapter plate.
NOTE: ALWAYS WEAR SAFETY GLASSES AND HEARING PROTECTION WHEN PERFORMING THIS SEQUENCE!
21. The body stud nuts should be torqued at this time using the torque equipment. See table 3.0 for the
proper torque for the valve being assembled.
22. Tape all check valves and external fittings (less the seat grease fitting) with Teflon tape and install. Note:
The hole in the vent drain fitting should not be covered with tape. Note: Install the body/vent drain plug
in the trunnion so that the hole will point up when tight. Use installation torques noted in Table 4 for
fittings
TABLE 3.0: Installation Torque Values for B7, B7M, L7, L7M Studs and Cap Screws
BODY NUT AND
CAP SCREW SIZE
1/2" – 13 UNC
5/8" – 11 UNC
3/4" – 10 UNC
7/8" – 9 UNC
1" – 8 UNC
1-1/8" – 8 UN
1-1/4" – 8 UN
Cap Screw Size
(in)
3/8-16UNC
1/2-13UNC
5/8-11UNC
3/4 -10UNC
DATE: 16-Sep-2020
DATE: 16-Sep-2020
Uncontrolled if Printed Without QA Stamp
ASSEMBLY MAKEUP TORQUE
DRY/ZINC PLATED THREADS
45 FT-LBS.
88 FT-LBS.
153 FT-LBS.
243 FT-LBS.
361 FT-LBS.
523 FT-LBS.
726 FT-LBS.
Table 3.0 Torque table for Studs
Dry/Zinc Plated /Anti-Size
Grease (lbs.Ft)
18
45
88
153
Table: 3.1 Torque table for Cap screw
19
Schlumberger-Private
Valves & Measurement
REVISION
TC-AOP-TR-D2-002
02
Page 19 of 24
ASSEMBLY MAKEUP TORQUE
CAD/TEFLON COATED THREADS
27 FT-LBS.
52 FT-LBS.
90 FT-LBS.
143 FT-LBS.
213 FT-LBS.
305 FT-LBS.
421 FT-LBS.
Cad/Teflon Coated / Grease
Lubed (lbs. Ft)
11
27
52
90
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