VAT 10.8 Series Assembly instructions

Installation, Operating &
Maintenance Instructions
298491EA
Edition
2017
-
06
-
08
UHV gate valve
with pneumatic actuator
Series 108
DN 250 – 320 mm (I.D. 10 – 12”)
This manual is valid for the following product ordering numbers:
108 . . - . E14 / 24 / 34 / 44
Sample picture

Series 1
08
2
/
25
Edition
2017
-
06
-
08
298491EA
Imprint
Manufacturer
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Website:
Phone:
Fax:
Email:
www.vatvalve.com
[phone]
[phone]
[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 2017
No part of these instructions may be reproduced in any way (photo-
copies, 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.

Series 108
298491EA
Edition
2017
-
06
-
08
3
/
25
Contents
1 Description of product........................................................................4
1.1 Identification of product.......................................................................................4
1.2 Use of product.....................................................................................................4
1.3 Related documents.............................................................................................4
1.4 Important information..........................................................................................4
1.5 Technical data.....................................................................................................4
2 Safety ...................................................................................................5
2.1 Compulsory reading material..............................................................................5
2.2 Danger levels......................................................................................................5
2.3 Personnel qualifications......................................................................................6
2.4 Safety labels........................................................................................................6
3 Design and Function...........................................................................7
3.1 Design.................................................................................................................7
3.2 Function ..............................................................................................................7
4 Installation...........................................................................................8
4.1 Unpacking ...........................................................................................................8
4.2 Installation into the system..................................................................................8
4.2.1 Admissible forces and bending moments.............................................10
4.3 Compressed air connection ..............................................................................11
4.4 Electrical connection.........................................................................................11
5 Operation...........................................................................................12
5.1 Normal operation...............................................................................................12
5.2 Operation under increased temperature...........................................................12
5.3 Behavior in case of compressed air pressure drop ..........................................12
5.4 Behavior in case of power failure......................................................................12
5.4.1 Manual emergency operation ...............................................................12
5.5 Trouble shooting ...............................................................................................13
6 Maintenance ......................................................................................14
6.1 Maintenance intervals.......................................................................................14
6.2 Required tools...................................................................................................14
6.3 Replacement of valve gate / mechanism unit...................................................15
6.4 Replacement of gate seal .................................................................................17
7 Repairs...............................................................................................18
8 Dismounting and Storage.................................................................19
8.1 Dismounting ......................................................................................................20
8.2 Storage..............................................................................................................20
9 Packaging and Transport.................................................................21
9.1 Packaging .........................................................................................................22
9.2 Transport...........................................................................................................22
10 Disposal.............................................................................................23
11 Spare parts ........................................................................................24

DESCRIPTION OF PRODUCT Series 1
08
4
/
25
Edition
2017
-
06
-
08
298491EA
1 Description of product
1.1 Identification of product
The fabrication number and order number are fixed on the product directly or by means of
an identification plate.
made in Switzerland
Fabrication No.:
108 . .- . . . .- . . . ./ . . . .
A - . . . . . .


Fabrication number
Order number
1.2 Use of product
Use product for clean and dry vacuum applications only. Other applications are only allowed
with the written permission of VAT.
1.3 Related documents
•Product data sheet
•Dimensional drawing
1.4 Important information
This symbol points to a very important statement that requires particular
attention.
Example
:
VAT disclaims any liability for damages resulting from inappropriate packaging.
1.5 Technical data
See product data sheet and dimensional drawing.

Series 108 SAFETY
298491EA
Edition
2017
-
06
-
08
5
/
25
2 Safety
2.1 Compulsory reading material
Read this chapter prior to performing any work with or on the product. It contains important
information that is significant for your own personal safety. This chapter must have been
read and understood by all persons who perform any kind of work with or on the product
during any stage of its serviceable life.
NOTICE
Lack of knowledge
Failing to read this manual may result in property damage.
Firstly, read manual.
These Installation, Operating & Maintenance Instructions are an integral part
of a comprehensive documentation belonging to a complete technical
system. They must be stored together with the other documentation and
accessible for anybody who is authorized to work with the system at any
time.
2.2 Danger levels
DANGER
High risk
Indicates a hazardous situation which, if not avoided, will result in death or
serious injury.
WARNING
Medium risk
Indicates a hazardous situation which, if not avoided, could result in death or
serious injury.
CAUTION
Low risk
Indicates a hazardous situation which, if not avoided, may result in minor or
moderate injury.
NOTICE
Command
Indicates a hazardous situation which, if not avoided, may result in property
damage.

SAFETY Series 1
08
6
/
25
Edition
2017
-
06
-
08
298491EA
2.3 Personnel qualifications
WARNING
Unqualified personnel
Inappropriate handling may cause serious injury or property damage.
Only qualified personnel are allowed to carry out the described work.
2.4 Safety labels
Label Part No. Location on valve
T-9001-156 Protective cover
Table 2-1

Series 108 DESIGN AND FUNCTION
298491EA
Edition
2017
-
06
-
08
7
/
25
3 Design and Function
3.1 Design
1 Sealing surface
2 Valve body
3 Bonnet flange
4 Actuator
Figure 3-1
3.2 Function
The valve features the VATLOCK sealing technology. This means, the valve is mechani-
cally locked in the closed position. In the open position, the mechanism is not locked. Leaf
springs hold gate and counter plate against the carriage with the ball retainers. The ball
pairs are in the detents. For closing, the mechanism is moved forward into the closing
position. The locking starts after the leaf spring stop touches the body. The ball retainers
move the ball pairs out of the detents. Gate and counter plate are spread apart. The gate
seal is pressed against the sealing surface without scuffing. The arrangement of the ball
pairs ensures an increase of the sealing force with vacuum on either side of the gate.
During opening the movements proceed in the reverse order. See «Figure 3-2».
1 Gate
2 Counter-plate
3 Leaf springs
4 Ball pairs
5 Ball detents
6 Gate seal
7 Spring stop
Valve seat side
Figure 3-2
1 2 3 4

INSTALLATION Series 1
08
8
/
25
Edition
2017
-
06
-
08
298491EA
4 Installation
WARNING
Unqualified personnel
Inappropriate handling may cause serious injury or property damage.
Only qualified personnel are allowed to carry out the described work.
WARNING
Heavy weight
Physical overstraining.
Use a crane to lift the product.
4.1 Unpacking
•Make sure that the supplied products are in accordance with your order.
•Inspect the quality of the supplied products visually. If it does not meet
your requirements, please contact VAT immediately.
•Store the original packaging material. It may be useful if products must be
returned to VAT.
The valve can be lifted only at the eyebolt threats;
see dimensional drawing.
4.2 Installation into the system
WARNING
Movable parts
Human body parts may get jammed and severely injured.
Do not connect or supply electrical power and compressed air before the
product is completely mounted in the system.
NOTICE
Contamination
Product may get contaminated.
Always wear cleanroom gloves when handling the product.

Series 108 INSTALLATION
298491EA
Edition
2017
-
06
-
08
9
/
25
NOTICE
Inappropriate tools
Sealing surfaces may get damaged.
Do not use sharp-edged tools.
NOTICE
Wrong tightening torque
Valve body and screws may get damaged.
Use tightening torque according the size of the screws.
NOTICE
Too long screws
Valve body may get deformed and / or malfunctions may occur.
Use only screws recommended by VAT.
1. Identify flange type according the fabrication number on the identification plate; see
chapter «1.1 Identification of product».
Example: 108 . . – C. . . / . . . = Flange type CF-F, metric thread
Valve Maximum screw-in depth «X» in mm
Nom. I.D. Flange types
mm inch C U P J T
250 10 X = 13 13 15 15 19
320 12 X = 13 13 18 16 19
C = CF-F, metric thread
U = CF-F, UNF thread P = ISO-F J = JIS T = ASA-LP
Table 4-1
2. Remove protective covers from body flanges.
3. Clean sealing surfaces and seals of both flanges;
see (1) and (2) according to «Figure 4-1» on page 10.
The valve seat side is marked with the symbol «
∇
» on flange «A».
x

INSTALLATION Series 1
08
10
/
25
Edition
2017
-
06
-
08
298491EA
4. Lift the valve to the mounting position; use only the eyebolts threats; see dimensional
drawing.
5. Mount the four screws (3) according to «Figure 4-1» on page 10, evenly in crosswise
order until the seal touches the sealing surface.
6. Tighten all screws with the torques appropriate for their property classes.
1 Flange A
2 Flange B
3 Screws
Figure 4-1
4.2.1 Admissible forces and bending moments
Forces from evacuating the system, from the weight of other components or
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.
The following forces or moments are admissible:
DN (nom. I.D.) Axial tensile or com-
pressive force «FA» Bending moment «M»
mm inch N lbf Nm lbf ·ft
250 10 3430 770 196 140
320 12 4000 900 300 220
If a combination of both forces («FA» and «M») occurs, the values
mentioned above are invalid. Please contact VAT for more
information.
Table 4-2
3
2
1
F
A M

Series 108 INSTALLATION
298491EA
Edition
2017
-
06
-
08
11
/
25
4.3 Compressed air connection
WARNING
Valve in open position
Risk of injury when compressed air is connected to the valve.
Connect compressed air only when:
– valve is installed in the vacuum system
– moving parts cannot be touched
Use clean, dry or slightly oiled air only.
Admissible air pressure range, see product data sheet.
1. Connect compressed air according to the product data sheet and dimensional drawing.
4.4 Electrical connection
DANGER
Electric shock
Parts being under voltage will result in serious injury or death.
Do not touch parts being under voltage.
NOTICE
Wrong voltage
Electrical components may get damaged.
Supply electrical components with the correct voltage.
1. Connect solenoid valve according to the product data sheet and dimensional drawing.
2. Connect position indicator according to the product data sheet and dimensional
drawing.
3. Connect heater (option) according to the product data sheet and dimensional drawing.

OPERATION Series 1
08
12
/
25
Edition
2017
-
06
-
08
298491EA
5 Operation
WARNING
Unqualified personnel
Inappropriate handling may cause serious injury or property damage.
Only qualified personnel are allowed to carry out the described work.
WARNING
Movable parts
Human body parts may get jammed and severely injured.
Do not operate before product is installed completely into the vacuum system.
5.1 Normal operation
Valve is opened and closed pneumatically.
5.2 Operation under increased temperature
Maximum allowed temperature, see product data sheet.
Note: After bake-out check and re-torque the bonnet screws.
5.3 Behavior in case of compressed air pressure drop
See product data sheet.
5.4 Behavior in case of power failure
See product data sheet.
5.4.1 Manual emergency operation
WARNING
Movable parts
Human body parts may get jammed and severely injured.
Keep human body parts away from movable parts.

Series 108 OPERATION
298491EA
Edition
2017
-
06
-
08
13
/
25
Only valid for the ordering number 108..
-
..
3
4
/
44 (
with solenoid valve)
In case of a power failure, the valve can be actuated manually if compressed air is
available.
Standard solenoid valve Solenoid valve for impulse actuation
(option)
Press push-button (1): valve opens
Release push-button (1): valve closes Press push-button (1): valve opens Press push -button (2): valve closes
Figure 5-1
5.5 Trouble shooting
Failure Check Action See
Valve does not
close / open Air pressure Connect compressed air «4.3 Compressed air connection»
Operating
pressure Adjust operating pressure Product data sheet
Voltage at
solenoid valve Connect voltage «4.4 Electrical connection»
Leak at gate Gate seal all
right? Replace Gate seal «6.3 Replacement of valve gate / mechanism unit»
Gate damaged or
contaminated? Replace valve gate «6.3 Replacement of valve gate / mechanism unit»
Operating
pressure Adjust operating pressure Product data sheet
Leak at body Bonnet seal and
sealing surface all
right?
Clean sealing
surface
– if necessary,
replace bonnet
seal
«6.3 Replacement of valve
gate / mechanism unit»,
steps 1 to 6
Bellows all right? Contact VAT www.vatvalve.com
Table 5-1
If you need any further information, please contact one of our service centers. You will find
the addresses on our website www.vatvalve.com.

MAINTENANCE Series 1
08
14
/
25
Edition
2017
-
06
-
08
298491EA
6 Maintenance
WARNING
Unqualified personnel
Inappropriate handling may cause serious injury or property damage.
Only qualified personnel are allowed to carry out the described work.
WARNING
Heavy weight
Physical overstraining.
Use a crane to lift the valve.
WARNING
Hazardous components
Human body parts may get jammed and severely injured.
Before starting maintenance:
– disconnect compressed air supply
– disconnect electrical power supply
WARNING
Movable parts
Human body parts may get jammed and severely injured.
Keep human body parts away from movable parts.
6.1 Maintenance intervals
Under clean operating conditions the valve does not require any maintenance during 50 000
cycles. After 50 000 cycles, VAT recommends replacing the mechanism unit;
see chapter «6.3 Replacement of valve gate / mechanism unit».
For more information or a general overhaul please contact one of our service centers. You
will find the addresses on our website www.vatvalve.com.
6.2 Required tools
•Torque wrench 40 Nm
•Cleanroom wiper soaked with alcohol (2% methyl ethyl ketone)
•O-Ring removal tool; see «Table 11-1» on page 24.
Figure 6-1

Series 108 MAINTENANCE
298491EA
Edition
2017
-
06
-
08
15
/
25
6.3 Replacement of valve gate / mechanism unit
WARNING
Loaded spring steel sheet
Human body parts may get jammed and severely injured.
Do not put human body parts between valve gate and spring steel sheet.
NOTICE
Contamination
Product may get contaminated.
Always wear cleanroom gloves when handling the product.
NOTICE
Inappropriate tools
Sealing surfaces may get damaged.
Do not use sharp-edged tools.
1. Vent chambers on either side to atmospheric pressure.
2. Open the valve.
3. Disconnect compressed air supply.
4. Disconnect electrical power supply.
5. Remove screws (1) according to «Figure 6-2» on page 16.
6. Lift actuator / mechanism unit carefully from body without touching the body wall;
see «Figure 6-2» on page 16. Use only the eyebolt threats; see dimensional drawing.
7. Remove locking ring (5) according to «Figure 6-3» on page 16.
8. Withdraw bolt (4) by pulling it downwards according to «Figure 6-3» on page 16.
9. Put mechanism to the horizontal position.
10. Insert new mechanism in reverse order.
11. Mount bolt (4) according to «Figure 6-3» on page 16.
12. Mount locking ring (5) according to «Figure 6-3» on page 16.
13. Clean sealing surface of bonnet flange and valve seat, use cleanroom wiper.
14. Replace bonnet seal.

MAINTENANCE Series 1
08
16
/
25
Edition
2017
-
06
-
08
298491EA
Figure 6-2 1 Screw
2 Bonnet seal
3 Valve body
Figure 6-3 4 Bolt
5 Locking ring
15. Lift actuator / mechanism unit into body without touching the body wall.

Series 108 MAINTENANCE
298491EA
Edition
2017
-
06
-
08
17
/
25
16. Mount screws (1) according to «Figure 6-2» on page 16.
Tighten screws in crosswise order with the following torques:
DN 250 / 320 40 Nm / 30 lbf·ft
17. Connect electrical power supply.
18. Connect compressed air supply.
Valve is ready for use.
6.4 Replacement of gate seal
1. Remove actuator / mechanism unit as described in «6.3 Replacement of valve gate /
mechanism unit».
2. Remove gate seal (1) from groove; see «Figure 6-4», use O-ring removal tool.
Figure 6-4 1 Gate seal
2 Valve gate
3. Check and clean sealing surface of valve seat.
4. Install new gate seal (1).
Press O-ring uniformly in crosswise order (diagonal) into groove.
5. Lift actuator / mechanism unit as described in section «6.3 Replacement of valve gate /
mechanism unit».
Valve is ready for use.
1
2

REPAIRS Series 1
08
18
/
25
Edition
2017
-
06
-
08
298491EA
7 Repairs
Repairs may only be carried out by the VAT service staff. In exceptional cases, the
customer is allowed to carry out the repairs, but only with the prior consent of VAT.
Please contact one of our service centers. You will find the addresses on our website
www.vatvalve.com.

Series 108 DISMOUNTING AND STORAGE
298491EA
Edition
2017
-
06
-
08
19
/
25
8 Dismounting and Storage
WARNING
Unqualified personnel
Inappropriate handling may cause serious injury or property damage.
Only qualified personnel are allowed to carry out the described work.
WARNING
Heavy weight
Physical overstraining.
Use a crane to lift the product.
WARNING
Hazardous components
Human body parts may get jammed and severely injured.
Before dismounting the product
– disconnect compressed air supply
– disconnect electrical power supply
WARNING
Movable parts
Human body parts may get jammed and severely injured.
Keep human body parts away from movable parts.
NOTICE
Contamination
Product may get contaminated.
Always wear cleanroom gloves when handling the product.

DISMOUNTING AND STORAGE Series 1
08
20
/
25
Edition
2017
-
06
-
08
298491EA
8.1 Dismounting
NOTICE
Valve in open position
Valve mechanism may get damaged if valve is in open position.
Close valve before dismounting the valve from the system.
1. Close valve.
2. Carry out the steps according to chapter «4 Installation» in reverse order.
Pay attention to the safety instructions!
8.2 Storage
NOTICE
Wrong storage
Inappropriate temperatures and humidity may cause damage to the product.
Valve must be stored at:
– relative humidity between 10% and 70%
– temperature between +10 °C and +50 °C
– non-condensing environment
NOTICE
Inappropriate packaging
Product may get damaged if inappropriate packaging material is used.
Always use the original packaging material and handle product with care.
1. Clean / decontaminate valve.
2. Cover all valve openings with a protective foil.
3. Pack valve appropriately by using the original packaging material.