Installation
Handwheel Operated Valves (903, 913, 963) Installation, Operation, and Maintenance Manual
9
the travel stop
1. Do you have a test fixture?
• If Yes: Follow steps 2 through 6.
• If No: Proceed to step 7.
1. Stop nut
2. Air supply
3. Tubing
4. Beaker of water
2. Supply air pressure equal to the system operating pressure to one side of the valve.
3. Cap the other side of the valve and install a venting rubber or plastic tube.
4. Hold the tube in a container of water.
5. Turn the handwheel closed until the leakage stops.
Air bubbles indicate leakage.
6. Adjust the travel stop nut tight against the spacer.
7. If you do not have a fixture, then follow the steps below:
a) Loosen the lock nut.
b) Turn the handwheel clockwise until you feel the initial resistance of the diaphragm
seating. From this point, turn the handwheel another 5/8 turn.
c) Turn the lock nut down until it bottoms on the spacer.
Designed and Manufactured by ITT
