27
TC-003001-30 / Rev 01
Feb-02
9.
To set the open stop, turn the hand wheel gear shaft counter clockwise until the key stops on the adapter
plate groove. Look into the bore of the valve, the flow bore of the ball should be aligned with the flow
bore of the seat assembles with not more than 1/16” of the ball radius protruding into the flow bore. Turn
the open position stop screw clockwise until it stops and tighten approximately 1 Ft-lb. for each inch of
valve bore. Retighten the locknut.
The hand wheel gear shaft should always be turned in the open
direction to set the open stop, so that all slack will be taken out of the gearing. This ensures a more
accurate stop setting.
10.
After setting the open stop a quick check can verify that it has been set correctly. Turn the hand wheel
gear shaft several turns towards the closed direction, and then return the valve to the open position until
the key hits the stop. There should be no more than 1/16” of the ball radius exposed into the flow bore
after the stop if properly set.
11.
Reinstall the indicator cap and tighten the indicator cap screws.
12.
Install the hand wheel and secure it with the hand wheel pin.
ASSEMBLY TORQUE VALUES
Table 7 – Installation Torque for B7, B7M, L7, and L7M Studs and Cap Screws
Thread Size
Dry/Zinc Plated (Ft-lbs.)
Cad/Teflon Coated (Ft-lbs.)
3/8”- 16UNC
19
11
1/2”- 13UNC
45
27
5/8”-11UNC
88
52
3/4”-10UNC
153
90
7/8”- 9UNC
243
143
1”- 8UNC
361
213
1 1/8”- 8UN
523
305
1 1/4”- 8UN
726
421
1 3/8”- 8UN
976
562
1 1/2”- 8UN
1278
733
1 5/8”- 8UN
1653
934
1 3/4”- 8UN
2054
1169
1 7/8”- 8UN
2539
1440
2”- 8UN
3094
1750
Table 8 – NPT Fitting Installation Torque
Fitting Thread Size
Installation Torque (Ft-lbs.)
1/4” NPT
25
3/8” NPT
39
1/2” NPT
75
3/4” NPT
135
1” NPT
288
