ITT Advantage Actuator 2.0, Maintenance Manual

Page: 14 / 22

Adjust the travel (closing) stop
The travel stop is designed to prevent overloading of the diaphragm, thus prolonging diaphragm life.
Travel stops are factory set and do not require routine adjustment. However, travel stop adjustment is
recommended when replacing a valve diaphragm.
A travel stop is optional on series 3, 5, 8, and 16 actuators.
1. Release the air pressure in the actuator covers.
2. Remove the clear plastic cap or switch package, if equipped.
3. Loosen the jam nuts and back off one turn.
4. If the actuator is a double acting or fail open actuator, then apply enough pressure in the upper cover
to close the valve.
5. For all modes of operation, turn the lower nut clockwise while preventing the adjusting bushing from
rotating until the valve begins to leak.
6. Turn the lower nut counterclockwise while continuing to prevent the adjusting bushing from rotating
until the valve stops leaking.
7. Tighten the jam nuts together.
8. Replace the clear plastic cap or switch package, if equipped.
Replace the spindle o-rings
1. Disconnect the air lines.
2. Remove any control packages.
3. Disassemble the valve.
For more information, see Disassemble the valve in this manual.
4. Disassemble the actuator.
For more information, see Replace the actuator diaphragm and spring for proper mode of operation
(fail open, fail close, or double acting) in this manual.
5. Withdraw the valve diaphragm, compressor, and spindle assembly from the bonnet.
6. Replace the o-rings and lubricate the new o-rings.
For more information, see Lubrication requirements in this manual.
7. Replace the valve diaphragm, compressor, and spindle assembly on the bonnet.
8. Reassemble the actuator.
For more information, see Replace the actuator diaphragm and spring for proper mode of operation
(fail open, fail close, or double acting) in this manual.
9. Reassemble the valve.
For more information, see Replace the actuator diaphragm and spring for proper mode of operation
(fail open, fail close, or double acting) in this manual.
10. Reconnect the air lines.
11. If the actuator mode of operation is fail open or double acting, then follow the steps below:
a) Examine the actuator upper cover for leakage past the indicating spindle o-ring seal.
b) If leakage is present, then replace the spindle o-rings.
Lubrication requirements
WARNING:
Standard lubricants are as outlined below. Special lubricants may be required for oxygen or other unique
services. Contact ITT for evaluation of non-standard lubricants.
Maintenance
12 Advantage
®
Actuator 2.0 Maintenance Manual