88 SERIES
Full Port Ball Valve
Installation & Maintenance Manual
3
August 5, 2019
www.a-tcontrols.com
IOM07001 REVISION 01
3.
VALVE OPERATION
3.1.
MANUAL
3.1.1.
HANDLE
3.1.1.1.
To OPEN the valve, turn the handle counterclockwise until the handle is parallel with the pipeline and the handle has
contacted the handle stop.
3.1.1.2.
To CLOSE the valve, turn the handle clockwise until the handle is perpendicular with the pipeline and the handle has
contacted the stop.
3.1.1.3.
A handle lock is incorporated into the handle.
For sizes up to 2”:
To use, slide the lock into the mounting pad, in the full open or full closed position. Insert an
appropriate size lock or hasp into the hole in the handle. If it can be performed safely, try to turn the handle to ensure that the
valve has been locked properly.
For sizes larger that 2”:
To use, turn the handle to the full open or full closed position.
Insert an appropriate size
lock or hasp into the hole in the handle and through the mounting pad. If it can be performed safely, try to turn the handle to
ensure that the valve has been locked properly.
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 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 hand wheel 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 88-Series Ball Valves can be mounted with quarter turn actuators. Valves with actuators shall be checked for
proper valve stem alignment. Angular or linear misalignments 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 ends (2) from the body (1) by removing the body bolts (15) and body nuts (16).