VAT 08 Series Assembly instructions

Installation, Operating, and Maintenance Instructions
Series 08, DN 63 - 100 (2½" - 4")
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [email protected] www.vatvalve.com
222687EC
2003-04-14
1/8
Insertable Gate Valve
with pneumatic actuator
This manual is valid for the valve ordering numbers:
08036-FA14/24/34/44
08038-FA14/24/34/44
08040-FA14/24/34/44
The respective product identification is given on each valve in the following way
(or similar):
made in Switzerland
Fabrication No.:
patented
96
F08 –. . . . . / . .
08 . . . – . . . . – . . . .
Explanation of symbols:
Read declaration carefully before you start any other
action!
Keep body parts and objects away from the valve
opening!
Attention!
Hot surfaces; do not touch!
Product is in conformity with EC guidelines,
if applicable!
Loaded springs and/or air cushions are potential
hazards!
Disconnect electrical power and compressed air lines.
Do not touch parts under voltage!
Wear gloves!
Read these «Installation, Operating & Maintenance Instructions» and the enclosed «General
Safety Instructions» carefully before you start any other action!

Installation, Operating, and Maintenance Instructions
Series 08, DN 63 - 100 (2½" - 4")
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [email protected] www.vatvalve.com
222687EC
2003-04-14
2/8
Imprint:
Manufacturer
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Website
www.vatvalve.com
Phone
[phone]
Fax
[phone]
Email
[email protected]
Publisher
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Editor
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Print
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Copyright
© VAT Vakuumventile AG 2008
No part of these Instructions may be reproduced in any way (photocopies, microfilms or any
other reproduction processes) nor may it be manipulated with electronic systems, duplicated or
distributed without written permission from VAT. Offenders are liable to pay damages.
The original VAT firmware and updated state of the art versions of the VAT firmware are
intended for use with VAT products. The VAT firmware contains a limited, time unlimited user
license. The VAT firmware may not be used for purposes other than those intended nor is it
permitted to make copies of the VAT firmware. In particular, it is strictly forbidden to give copies
of the VAT firmware to other people.
The use of trade names, brand names, trademarks, etc. in these Instructions does not entitle
third parties to consider these names to be unprotected and to use them freely. This is in
accordance with the meaning of the laws and acts covering brand names and trademarks.

Installation, Operating, and Maintenance Instructions
Series 08, DN 63 - 100 (2½" - 4")
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [email protected] www.vatvalve.com
222687EC
2003-04-14
3/8
Technical data
Pressure range 1 x 10-7 mbar to 1,6 bar (abs),
Differential pressure on the valve gate 1,6 bar in either direction
Differential pressure at opening 30 mbar
Admissible temperature: Valve 150°C
Pneumatic actuator 50°C
Position indicator 80°C
Solenoid 50°C
Position indicator: Contact rating 5 A / 250 V AC, 3 A / 50 V DC
Solenoid see tag on solenoid
Further data according to VAT catalogue «Vacuum Valves 2000».

Installation, Operating, and Maintenance Instructions
Series 08, DN 63 - 100 (2½" - 4")
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [email protected] www.vatvalve.com
222687EC
2003-04-14
4/8
Admissible forces
Forces from evacuating the system, from the weight of other components, and from baking can lead to deformation of the
valve body and to malfunction of the valve. The stress has to be relieved by suitable means, e.g. bellows sections.
Due to the design (very slim) and the mounting possibility (installation between two flanges) no forces other than the screw
forces at the flanges may affect the valve.
Compressed air connection
Compressed air may only be connected if
- valve has been installed into the vacuum system
- moving parts cannot be touched
Connect compressed air to the connection (internal thread R 1/8“, 1/8“ NPT for USA)
Compressed air pressure (min. - max. overpressure): 4 - 7 bar / 55 - 95 psig
Use only clean, dry or slightly oiled air!

Installation, Operating, and Maintenance Instructions
Series 08, DN 63 - 100 (2½" - 4")
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [email protected] www.vatvalve.com
222687EC
2003-04-14
5/8
Electrical connection
Do not touch any electrically charged parts!
Electrical power may only be connected if
- valve has been installed into the vacuum system
- moving parts cannot be touched
Verify that mains voltage matches voltage stated on the solenoid! Sockets for position indicator and
solenoid are supplied with the valve.
Wire solenoid and position indicator according to the following diagrams:
Standard solenoid
Solenoid for impulse actuation (option)
MV
2
1
power
2
1
2
1
close
open
1
2
power
2
1
1
2
MV
MV
MV = coil of solenoid
MV = coil of solenoid
Minimum pulse duration 50 ms
Continuous voltage does not damage the coil
Standard position indicator
Lg
Lo
NC/2
C/1
NO/3/4
NO/3/4
C/1
NC/2
Prepare cable:
Connect cable:
max. 6.5 mm
(¼'')
tin-plated
a) Slide upper part on
cable
b) Join strands by
soldering
c) Slide upper part on
lower part and tighten
cable clamp
d) Screw upper part
together with lower
part on actuator
Lo = position indicator «open»
Lg = position indicator «closed»
Power failure
Standard solenoid: Valve closes
Solenoid for impulse actuation (option): Valve position does not change, but a started movement will be completed.

Installation, Operating, and Maintenance Instructions
Series 08, DN 63 - 100 (2½" - 4")
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [email protected] www.vatvalve.com
222687EC
2003-04-14
6/8
Emergency operation at power failure
In case of a power failure, the valve can be actuated according to the following instructions, provided that there is
compressed air available.
Standard solenoid
Solenoid for impulse actuation (option)
Emergency operation
(slotted screw)
Emergency operation
(slotted screw)
Coil «open»
Coil «closed»
5
1
3
To open the valve:
Turn clockwise
To close the valve:
Turn counter-clockwise
Attention!
Remote operation is only possible if the emergency
operation (slotted screw) is turned counter-clockwise to
its stop.
To open the valve:
Turn slotted screw of solenoid/coil «OPEN» counter-
clockwise to its stop. As soon as valve is open, turn
slotted screw back to its original position.
To close the valve:
Turn slotted screw of solenoid/coil «CLOSED»
counter-clockwise to its stop. As soon as valve is
closed, turn slotted screw back to its original position.
Attention!
Remote operation is only possible of both emergency
operations (slotted screws «OPEN» and «CLOSED»)
are turned clockwise to their stop (initial position).
Compressed air failure
Valve closed: valve remains closed
Valve open: valve position is undefined

Installation, Operating, and Maintenance Instructions
Series 08, DN 63 - 100 (2½" - 4")
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [email protected] www.vatvalve.com
222687EC
2003-04-14
7/8
Trouble shooting
Valve does not close/open: Power available?
Compressed air available?
Emergency operation in neutral position?
Solenoid defective?
Check voltage!
Check air pressure!
Leak at gate: Clean valve seat and gate seal!
Replace gate seal, if damaged!
Correct air pressure?
Leak at body: Flanges leaktight?
Replace bonnet seal!
Screws at bonnet tightened?
Repairs
Contact VAT for repairs or maintenance. The fabrication No. (F08- . . . . . / . . . . ) marked on the valve body has always to
be specified. It has to be individually decided whether the work can be performed by the customer or has to be carried out
by VAT.
All supplies (e. g. compressed air, electrical power) have to be disconnected for removal/installation of the valve from/into
the system.
Even with disconnected supply, loaded springs and/or air cushions in cylinders can be potential hazards.
Keep fingers and objects away from the valve opening!
Products returned to VAT for repair have to be free of harmful substances such as e.g. toxical, caustic or microbiological
ones. For radioactively contaminated products the customer has to fill in the VAT form «Contamination and Radiation
Report» and to send it with the product. The form is available at VAT. The maximum permissible values indicated in the
form must not be exceeded.

Installation, Operating, and Maintenance Instructions
Series 08, DN 63 - 100 (2½" - 4")
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [email protected] www.vatvalve.com
222687EC
2003-04-14
8/8
Maintenance
Replacement of gate seal
The figures in brackets refer to the drawing on page 10
1. Vent chambers on either side of valve
2. Open valve
3. Switch off compressed air
4. Switch off electrical power
5. Disconnect compressed air line
6. Remove position indicators (6) (they may be connected to the connecting cable)
7. Remove valve from installation
8. Put valve on a clean place
9. Remove compressed air connection (7)
10. Unclamp snap ring (9) on body side and simultaneously withdraw cylinder tube (8) with attached solenoid and cylinder
cover (10) carefully from bushing (11) and piston (12)
Attention: If the piston is pulled to the open position during withdrawal of the cylinder tube, it has to be pushed back
so that the valve gate (2) is in the closed, but not locked position!
11. Loosen countersunk screw (13) in thread ring (4)
12. Unscrew thread ring (4) from body (1)
Attention: Before removing the thread ring mark its position exactly!
13. Remove screw (14)
14. Hold counter-plate (3) at the bore hole by means of a screwdriver
15. Turn piston (12) clockwise by approx. 45° and pull it slowly backwards
16. Drop out balls (15) from bore hole in counter-plate (3)
Attention: Pull out piston to max. stroke "B"!
DN 63 max. stroke "B" 81.5
DN 80 98.5
DN 100 118.5
17. Withdraw mechanism (counter-plate with attached gate) from body
18. Remove O-ring (5) carefully from gate groove
Attention: Be careful not to damage O-ring groove!
19. Check seat surface in body. Remove scratches by polishing concentricly with abrasive cloth grain 220, and clean seat
surface with alcohol using a lint-free cloth.
20. Clean O-ring groove with alcohol using a lint-free cloth
21. Press new O-ring with the thumb crosswise into groove
Attention: Be careful not to twist O-ring!
22. Put mechanism (counter-plate with attached gate) into body and hold it
23. Push shaft (18) carefully forward between valve gate and counter-plate
24. Press balls (15) through bore hole in counter-plate into bore holes of shaft (one ball pair after the other) while pushing
shaft progressively forward
25. After all balls have been inserted, continue pushing the shaft until the balls enter the detents of the valve gate and
counter-plate
26. Mount screw (14)
27. Screw thread ring (4) into body (1), exactly to the marked position
28. Tighten countersunk screw (13) in thread ring (4)
29. Align valve gate (2) parallel to sealing surface in body
30. Slide cylinder tube (8) carefully over piston (12) and bushing (11)
Attention: Avoid twisting!

Installation, Operating, and Maintenance Instructions
Series 08, DN 63 - 100 (2½" - 4")
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [email protected] www.vatvalve.com
222687EC
2003-04-14
9/8
31. Mount snap ring (9) and check whether it is placed properly in groove
32. Attach compressed air connection (7)
33. Close valve
34. Perform function and leak test
35. Mount valve into system
36. Attach position indicators
37. Connect electrical power
38. Connect compressed air
39. Perform function and leak test
Valve is ready for operation

Installation, Operating, and Maintenance Instructions
Series 08, DN 63 - 100 (2½" - 4")
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [email protected] www.vatvalve.com
222687EC
2003-04-14
10/8