Maintenance
Bio-Pure Installation, Operation, and Maintenance Manual
15
Use one of the following procedures to adjust the travel stop. ITT recommends you adjust the
travel (closing) stop with air pressure whenever possible.
If ...
Then use this procedure ...
You have air pressure available
Adjust the travel (closing) stop with air pressure
You do not have air pressure available
Adjust the travel (closing) stop without air pressure
Adjust the travel (closing) stop with air pressure
1. With the valve slightly open, apply air pressure at 150 psig (10 bar) to the upstream side.
NOTICE:
Make sure that seal leakage is not excessive at this time as it will result in the whipping
action of the flexible tube.
2. Connect the downstream side to a flexible tube immersed in a container of water.Air
bubbles should be evident in the water.
3. Remove the screw that secures the handwheel to the spindle.
4. Turn the handwheel clockwise until the air bubbles stop.
5. Push down on the handwheel and reinstall the screw.
The maximum allowable torque on this joint is 32 in-lbs (3.6 N-m).
Adjust the travel (closing) stop without air pressure
1. With system pressure vented, remove the screw securing the handwheel to the spindle and
handwheel.
2. Using a wrench applied to the spindle flats, close the valve to the final torque as follows:
If diaphragm is ...
Then close to torque of ...
Elastomer
4 in-lbs (0.45 N-m)
PTFE
6 in-lbs (0.68 N-m)
3. Slide the handwheel over the spindle, push down, and reinstall the screw.
The maximum allowable torque on this joint is 32 in-lbs (3.6 N-m).
Lubrication requirements
NOTICE:
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.
Re-lubrication is not intended for actuated valves. Actuator is not intended to be disassembled
nor assembled in the field.
Lubrication schedule
Remove residual grease prior to re-lubrication. Lubricate the spindle, o-rings (for COP manual
topworks), and mating surfaces whenever the topworks is disassembled.
Acceptable lubricants
Brand
Lubricant type
Chevron
FM ALC EP 2 (FDA Compliant)
Fuchs
Cassida FM CSC EP2 (FDA Compliant)
Designed and Manufactured by ITT
