VAT Series 651 Installation, Operating, & Maintenance Instructions page 40

10. Remove gate and body o-ring from
sealing ring carefully with a soft tool.
11. Remove grease residues at sealing
ring with alcohol.
Clean sealing ring and pendulum
plate with alcohol or in an ultrasonic
bath.
12. Clean out valve body with alcohol.
Use an appropriate non metal tool
with a cloth to enter valve body.
Do not enter valve body with hands!
Then blow out valve body with clean
air.
Do not directly expose seals
(actuator and retaining pin
feedthroughs) to air stream!
13. Clean or replace gate seal if
necessary.
Install gate o-ring to sealing ring
without grease.
14. Clean or replace body seal if
necessary.
Lubricate body o-ring with the
quantity of vacuum grease listed in
the table to the right.
15. Install body o-ring into sealing ring.
16. Deposit vacuum grease on the
bottom side of the body seal
according to drawing below. Pay
attention that the quantity of vacuum
grease listed in the table to the right
is distributed constantly over the
whole circumference.
Note: For Replacement of actuator
or actuator shaft seals, proceed with
step 18 otherwise go to step 17.
17. Reassembly the valve in reverse
order, step 9...3.
18. Close the valve bonnet, see step 40.
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel +41 81 771 61 61 Fax +41 81 771 48 30 CH@vatvalve.com www.vatvalve.com
Installation, Operating & Maintenance Instructions
Series 651 DN 320-400 (I.D. 12" - 16"), Logic
D e s c r i p t i o n
Valve size
DN320 / 12"
(65150 - . . . . - . . . .)
DN350 / 14"
(65151 - . . . . - . . . .)
DN400 / 16"
(65152 - . . . . - . . . .)
Valve size
DN320 / 12"
(65150 - . . . . - . . . .)
DN350 / 14"
(65151 - . . . . - . . . .)
DN400 / 16"
(65152 - . . . . - . . . .)
gate seal
body seal
Quantity of grease [ml]
0.3
0.4
0.4
Quantity of grease [ml]
0.5
0.7
1.1
Apply grease deposit
on this side
Required tool
267736ED
40/53
2008-02-26