Replacement Of Spare Parts - GEM 717 Operating Instructions Manual

14 Inspection and maintenance

14.2 Replacement of spare parts

▶ For an overview of spare parts see chapter "Spare parts".
14.2.1 Disassembly of 2/2-way ball valve DN 10-50
1. Depressurize the plant or plant component.
2. Release the threaded connection locking device (see
chapter "Threaded connection locking devices").
▶ The threaded connection locking device can also be
pulled off from the ball valve body when assembling or
disassembling the ball valve.
3. Unscrew the union nuts 13 from the ball valve body 7.
4. Remove the insert 12.
5. Remove the gasket 10.
6. Remove the ball valve from the piping.
7. Hold the ball valve vertically and open by 45°.
ð The remaining residual liquid runs out.
8. Move the ball valve to the CLOSED position.
9. Using the key insert 1 for the handle 2, turn out the seal
carrier 11.
10. Remove the handle 2.
11. Remove O-ring 9, O-ring 8 and gasket 5.
12. Carefully press out the ball 6 (taking care not to scratch
the ball).
13. Press the spindle(s) 4 (21) into the ball valve body and re-
move.
14. Refit all parts in the reverse order.
GEMÜ 717
NOTICE
NOTICE
14.2.2 Disassembly of 2/2-way ball valve DN 65-100
1. Depressurize the plant or plant component.
2. Release the threaded connection locking device (see
chapter "Threaded connection locking devices").
▶ The threaded connection locking device can also be
pulled off from the ball valve body when assembling or
disassembling the ball valve.
3. Unscrew the union nuts 13 from the ball valve body 7.
4. Remove the insert 12.
5. Remove the gasket 10.
6. Remove the ball valve from the piping.
7. Move the ball valve to the open position.
8. Remove the hand lever protection cap 1.
9. Release the hand lever screw 3 and washer 4 and remove
them.
10. Remove the hand lever.
11. Undo and remove the screws.
12. Remove the ratchet plate.
13. Using the key insert for the hand lever, turn out the
threaded ring 17 and the seal carrier 16.
14. Remove O-ring 9, O-ring 8 and gasket 5.
15. Carefully press out the ball 6 (taking care not to scratch
the ball).
16. Press the upper spindle 20 and lower spindle 21 into the
ball valve body and remove.
17. Refit all parts in the reverse order.
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NOTICE
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