ITT Engineered Valves 903, Инструкция по установке, эксплуатации и обслуживанию

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2. Values given are for lubricated fasteners.
3. Minimum values given will provide longer diaphragm cycle life for valves in non-auto-
clave and low thermal cycle conditions.
4. Maximum values given will be required for autoclave conditions and for high thermal
cycle conditions.
5. Torques should be applied at or near ambient conditions <38°C |100°F.
4.3 Set the travel stop
1. Do you have a test fixture?
• If Yes: Follow steps 2 through 6.
• If No: Proceed to step 7.
2
3
4
1
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.
4.3 Set the travel stop
10 Handwheel Operated Valves (903, 913, 963) Installation, Operation, and Maintenance Manual