D9 Series Full Port
Direct Mount Flanged Ball Valve
Installation & Maintenance Manual
4
June 27, 2023
www.a-tcontrols.com
IOM07011REVISION 02
5.4.
Ensure the stem (6) is in the closed position with the body tang parallel with the flow of the valve. Carefully slide the ball
(3) into the body (1) and insert the seat (4) and body gasket (5).
5.5.
Assemble end cap (2) onto the body (1). Insert all body studs (18) and nuts (17) into the valve and tighten to finger tight,
making sure that the end (2) is flat against the body (1). Tighten all nuts (17) to the final torque in a star pattern. Check each
body bolt (18) torque and tighten if needed a final time. It is acceptable for the torque to relax slightly over time due to
relaxation of the polymer components, but the valve will still seal properly. If leakage is detected, repeat steps for tightening
the body bolts (18).
5.6.
If required, assemble the locking device (21), handle stop assembly (19 & 20), handle (15), and the handle nut (24).
Fastener Torque Chart
Valve Size
50% of Max Torque
of Body Bolts
(In-lbs.)
Max Torque of
Body Bolts
(In-lbs.)
Max Torque of
Stem Nut
(In-lbs.)
1/2"
100
200
122
3/4"
109
217
122
1”
143
286
122
1-1/2”
152
304
191
2”
196
391
191
2-1/2”
196
391
191
3”
261
521
278
4”
261
521
278
6”
261
521
365
8”
600
1200
365
10”
600
1200
365
12”
600
1200
365
6.
REPAIR KITS
Repair kits are available to replace all soft goods. See Bill of Materials for components that are included in the repair kits.
