VAT 09.1 Series Assembly instructions

Installation, Operating &
Maintenance Instructions
1088779EA Edition 19.05.2021
HV gate valve
with pneumatic actuator
Series 091
DN 50 – 200 mm (I. D. 2" – 8")
This manual is valid for the following product ordering numbers:
091 . . - . E14/24/34/44/46
Sample picture

Series
091
2/27 Edition 19.05.2021 1088779EA
Imprint
Manufactur
er
VAT Vakuumventile AG, CH
-
9469 Haag, S
witzerland
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 2021
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.

Series 091
1088779EA Edition 19.05.2021 3/
27
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
6 Trouble shooting...............................................................................14
7 Maintenance ......................................................................................15
7.1 Maintenance intervals....................................................................................................15
7.2 Required tools...............................................................................................................15
7.3 Cleaning of the valve gate and body.............................................................................16
8 Repairs...............................................................................................20
8.1 Fixed price refurbishment..............................................................................................20
9 Dismounting and Storage.................................................................21
9.1 Dismounting ..................................................................................................................22
9.2 Storage..........................................................................................................................22
10 Packaging and Transport.................................................................23
10.1 Packaging......................................................................................................................24
10.2 Transport.......................................................................................................................24
11 Disposal.............................................................................................25
12 Spare parts ........................................................................................26
13 Appendix............................................................................................27

DESCRIPTION OF PRODUCT Series
091
4/27 Edition 19.05.2021 1088779EA
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.
Fabrication No.:
000 . .- . . . .- . . . ./ . . . .
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 091 SAFETY
1088779EA Edition 19.05.2021 5/
27
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
091
6/27 Edition 19.05.2021 1088779EA
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 091 DESIGN AND FUNCTION
1088779EA Edition 19.05.2021 7/
27
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 sealing principle is based on a wedge shape gate design. The gate seal is pressed against
the sealing surface by means of a pneumatic actuator. The valve is standard equipped with a bellows
feedthrough. Optional the valve can be equipped with a shaft feedthrough, with or without PTFE
protection bellows.
1 Gate
2 Sliding elements
3 Gate seal
4 Bellows
Valve seat side
Figure 3-2
4
3
2
1

INSTALLATION Series
091
8/27 Edition 19.05.2021 1088779EA
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.
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.
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.
NOTICE
Inappropriate tools
Sealing surfaces may get damaged.
Do not use sharp-edged tools.

Series 091 INSTALLATION
1088779EA Edition 19.05.2021 9/
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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.
Identify flange type according the fabrication number on the identification plate;
see Example: 091 . . – P . . . / . . . = Flange type ISO-F.
Valve Maximum screw-in depth «G» in mm
Nom. I.D. Flange types
mm
inch
C
U
P
J
T
63 2½ G = 12 12 12 12 12
80 3 G = 12 12 12 12 12
100 4 G = 12 12 12 12 12
160 6 G = 12 12 15 15 15
200 8 G = 16
C
= CF-F, metric thread
U= CF-F, UNF thread
P= ISO-F
J= JIS
T= ASA-LP
Table 4-1

INSTALLATION Series
091
10/27 Edition 19.05.2021 1088779EA
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 bending moments are admissible:
DN (nom. I.D.) Axial tensile or com-
pressive force «FA» Bending moment «M»
mm inch N lbf Nm lbf ∙ft
50 2 500 112 30 22
63 2½ 1960 440 78 58
80 3 2450 560 98 72
100 4 2450 560 98 72
160 6 2940 660 147 108
200 8 2940 660 147 108
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
1. Remove protective covers from body flanges.
2. Clean sealing surfaces and seals of both flanges;
see (1) and (2) according to «Figure 4-1».
The valve seat side is marked with the symbol « » on flange «A».
3. Lift valve to the mounting position.
4. Mount the four screws (3) according to «Figure 4-1», evenly in crosswise order until the seal
touches the sealing surface.
3
1
2
1 Flange A
2 Flange B
3 Screws
Figure 4-1
5. Tighten all screws with the torques appropriate for their property classes.

Series 091 INSTALLATION
1088779EA Edition 19.05.2021 11/
27
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
091
12/27 Edition 19.05.2021 1088779EA
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.
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.
Only valid for the ordering number 091..-..
34
and 091..-..
44
(with solenoid valve)

Series 091 OPERATION
1088779EA Edition 19.05.2021 13/
27
In case of a power failure, the valve can be actuated manually if compressed air is available.
Solenoid valve, standard
Emergency operation
Press push-button (1) and/or rotate push-button 90° CW : valve opens
Release push-button (1) or rotate push-button back to initial orientation: valve closes
Solenoid valve for impulse actuation (option)
Press push-button (1): valve opens
Press push-button (2): valve closes

TROUBLE SHOOTING Series
091
14/27 Edition 19.05.2021 1088779EA
6 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 «7.3 Cleaning of the valve gate
and body»
Gate damaged or
contaminated? Contact VAT www.vatvalve.com
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
«7.3 Cleaning of the valve gate
and body»
Table 6-1
If you need any further information, please contact one of our service centers. You will find the
addresses on our website www.vatvalve.com.

Series 091 MAINTENANCE
1088779EA Edition 19.05.2021 15/
27
7 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
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.
7.1 Maintenance intervals
Under clean operating conditions the valve does not require any maintenance during specified service
lifetime; see product data sheet. Contamination from the process may influence the function and
requires more frequent maintenance. After these cycles, VAT recommends to clean the gate seal or if
needed, replace the gate seal.
Recommendation under harsh process conditions:
Annual inspection and replacement of seal kit and bellows feed through to achieve
the highest possible safety level.
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.
7.2 Required tools
• Allen wrench
• Screwdriver
• Cleanroom wiper soaked with alcohol (2% methyl ethyl ketone)
• O-Ring removal tool; see «Table 12-1» on page 26.
Ensure that the maintenance technician is familiar with the safety precautions which
relate to the product. Wear appropriate safety clothing when you come into contact
with contaminated components. Dismantle and clean contaminated components
inside a fume cupboard.

MAINTENANCE Series
091
16/27 Edition 19.05.2021 1088779EA
7.3 Cleaning of the valve gate and body
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.
Do not clean the O-ring with alcohol, because alcohol may damage the surface of the
O-rings, we recommend to treat the O-rings with a small amount of vacuum grease.
1. Vent chambers on either side of the valve to atmospheric pressure.
2. Open the valve.
3. Disconnect compressed air supply.
4. Disconnect electrical power supply.
5. Remove screws (1); see «Figure 7-1» on page 17.

Series 091 MAINTENANCE
1088779EA Edition 19.05.2021 17/
27
6. Pull out valve insert (2) from valve body (3); see «Figure 7-1».
1 Screws
2 Valve insert
3 Valve body
Figure 7-1
7. Identify seat side marker “ ”; see «Figure 7-2».
1 Seat side marker
Figure 7-2
1
2
3
1

MAINTENANCE Series
091
18/27 Edition 19.05.2021 1088779EA
8. Clean gate sealing surfaces (1) (seat side) and other surfaces inside valve body; see «Figure
7-3».
1 Sealing surface
Figure 7-3
9. Clean or replace the gate O-ring (13); see «Figure 7-5» on page 19, use O-ring removal tool.
VAT recommends that whenever the gate O-ring is changed to also change the
gliders (Peek-tabs) on both sides of the gate; see item 11 and 12.
10. Continue with step 13 when the gliders are not replaced.
11. Remove gliders from the front and backside of the gate with a small, edge shaped tool e.g.
screwdriver. Squeeze tool into gap between glider and gate (a); see «Figure 7-4». Push down
the tool (b) to release glider from pocket and remove glider (c).
1 Glider
2 Gate
3 Gap between
glider and gate
Figure 7-4
12. Mount the gliders (1) by gently pushing the gliders in the designated pockets in the gate.
1
3
1
2
a
b
c

Series 091 MAINTENANCE
1088779EA Edition 19.05.2021 19/
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13. Clean or replace bonnet O-ring (7); see «Figure 7-5»; use O-ring removal tool.
14. Clean sealing surface of bellows (6); see «Figure 7-5».
Do not damage or scratch O-ring sealing surface.
6 Bellows sealing surface
7 Bonnet O-ring
13 Gate O-ring
Figure 7-5
15. Mount valve insert (2) into the valve body (3); «Figure 7-1» on page 17. Assure that the gate O-
ring is facing the valve body seat side marker ” “; see «Figure 7-2» on page 17.
16. Mount screws (1) according to «Figure 7-1» on page 17.
17. Connect compressed air supply.
18. Connect electrical power supply.
Valve is ready for use.

REPAIRS Series
091
20/27 Edition 19.05.2021 1088779EA
8 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.
8.1 Fixed price refurbishment
The VAT customer service can refurbish the product or individual components for you. Wear-sensitive
parts are replaced, and the warranty on the replaced parts is extended.
Please contact one of our service centers. You will find the addresses on our website
www.vatvalve.com.