D9 Series Full Port
Direct Mount Flanged Ball Valve
Installation & Maintenance Manual
3
June 27, 2023
www.a-tcontrols.com
IOM07011REVISION 02
3.1.2.
GEAR
3.1.2.1.
To OPEN the valve, turn the hand wheel counterclockwise. The indicator will be pointing to the open position
and the hand wheel will stop rotating when fully opened. The flow can be adjusted by stopping the indicator
anywhere between open and close.
3.1.2.2.
To CLOSE the valve, turn the handwheel clockwise. The indicator will be pointing to the close position and the
hand wheel will stop rotating when fully closed. The flow can be adjusted by stopping the indicator anywhere
between open and close.
3.2.
AUTOMATED
3.2.1.
A-T Controls D9 Series Ball Valves can be mounted with quarter-turn actuators. Valves with actuators shall be
checked for proper valve stem alignment. Angular or linear misalignment may result in high operational torque and
unnecessary wear on the valve stem. See the actuator IOM for information on operating the actuator.
4.
DISASSEMBLY
!!! WARNING !!!
CAUTION, FLUIDS CAN BE TRAPPED IN THE BODY OF THE VALVE, POSSIBLY UNDER HIGH PRESSURE.
FOR YOUR SAFETY, IT IS IMPORTANT THAT PRECAUTIONS ARE TAKEN BEFORE REMOVAL OF THE
VALVE FROM THE LINE OR ANY DISASSEMBLY.
4.1.
Remove actuator or gear if equipped.
4.2.
Care should be taken to not damage the surface finish of the valve components.
4.3.
Remove the end cap (2) by removing the body nuts (17).
4.4.
Remove the seats (4) and body gasket (5) from the body (1). Once removed, with the valve in the fully closed position, the
ball (3) should slide freely out of the body (1).
4.5.
If equipped, remove the handle nut (24), handle (15), and the handle stop assembly (19 & 20).
4.6.
While holding the stem (6) stationary, remove the packing nut (13). Once removed, the locking saddle (12), Belleville
washers (11), and the packing bushing (10) should be free to remove.
4.7.
While holding the bottom of the stem (6), push the stem (6) through the inside of the valve body (1).
4.8.
Remove the packing set (8) and the stem seal (7).
4.9.
Inspect all components for damage and, if necessary, clean or replace.
5.
ASSEMBLY
5.1.
Care should be taken to not damage the surface finish of the valve components.
5.2.
Place stem seal (7) on the stem (6) and install it by going through the body (1). Insert V-style packing set (8) over stem (6)
with the V pointing away from the valve (see Bill of Materials for correct orientation).
5.3.
Install the packing gland (8) Belleville washers (11), locking saddle (12), and the packing nut (13). While holding the stem
(6), tighten the packing nut (13) to the torque listed in the Fastener Torque Chart. Tighten further if needed in order to be
able to bend the locking saddle (12) over the packing nut (13).
