VAT 571 Series Assembly instructions

Installation, Operating &
Maintenance Instructions
941265EA Edition 2020-06-12
All-Metal Angle Valve
with single acting pneumatic actuator and closing spring
Series 571
DN 16 – 40 mm (I. D. ⅝" – 1½")
This manual is valid for the following product ordering numbers:
57124- . E . . - ….
57132- . E . . - ….
Sample picture

Series
571
2/31 Edition 2020-06-12 941265EA
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 2020
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 571
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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...................................................................................................5
2.4 Safety labels....................................................................................................................6
3 Design and Function...........................................................................7
3.1 Design.............................................................................................................................7
3.2 Function...........................................................................................................................8
4 Installation...........................................................................................9
4.1 Unpacking .......................................................................................................................9
4.2 Installation into the system............................................................................................10
4.3 Compressed air connection...........................................................................................14
4.4 Electrical connection......................................................................................................15
5 Operation...........................................................................................16
5.1 Normal operation...........................................................................................................16
5.2 Operation under increased temperature........................................................................17
5.3 Bake-out........................................................................................................................17
5.4 Behavior in case of air pressure drop............................................................................17
5.5 Behavior in case of power failure ..................................................................................18
5.6 Trouble shooting............................................................................................................19
6 Maintenance ......................................................................................20
6.1 Maintenance intervals....................................................................................................20
7 Repairs...............................................................................................21
7.1 Replacement of dynamic seal VATRING.......................................................................22
8 Dismounting and Storage.................................................................26
8.1 Dismounting ..................................................................................................................27
8.2 Storage..........................................................................................................................27
9 Packaging and Transport.................................................................28
9.1 Packaging......................................................................................................................29
9.2 Transport.......................................................................................................................29
10 Disposal.............................................................................................30
11 Spare parts ........................................................................................31

DESCRIPTION OF PRODUCT Series
571
4/31 Edition 2020-06-12 941265EA
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.:
571..-.E. .- . . . ./ . . . .
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.
Weights of standard valves:
DN 16: 3.05 kg
DN 40: 9 kg
Weight of special valves, see product data sheet.

Series 571 SAFETY
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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.
2.3 Personnel qualifications
WARNING

SAFETY Series
571
6/31 Edition 2020-06-12 941265EA
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-9001-155 On protective covers of flanges
Table 2-1

Series 571 DESIGN AND FUNCTION
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3 Design and Function
3.1 Design
Figure 3-1
1 Actuator
2 Valve body
3 Connecting flange
4 Sealing surface
1
2
3
4
3
4

DESIGN AND FUNCTION Series
571
8/31 Edition 2020-06-12 941265EA
3.2 Function
Valve is closed by a spring. Valve is opened pneumatically.
Closing:
The valve plate moves towards the seat. The VATRING (1) moves into the valve seat and closes leak
tight.
Opening:
The valve plate moves back from the valve seat until the open stop is reached.
1 VATRING
2 Bonnet seal
3 Bellows
Valve seat side
Figure 3-2

Series 571 INSTALLATION
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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.
Do not open the plastic bag before mounting the valve into a system.
NOTICE
Sensitive product
Valve parts may get damaged.
– When lifting the valve, pay attention that the valve does not touch any solid
–objects.
– Lift valve carefully and put it down on a clean surface or mount it to a
–clean system.
Weight of standard valves; see chapter «1.5 Technical data».

INSTALLATION Series
571
10/31 Edition 2020-06-12 941265EA
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
Force effect from other components of the system
Valve body may get deformed and/or malfunctions may occur.
– Do not use valve to support other components.
– Make sure that forces from other components do not impair the valve;
–use bellows sections, for instance.
4.2.1 Preparation for installation
WARNING
Danger of injury in case of insufficient skills
Inappropriate handling may cause serious injury or property damage.
Make sure that the valve does not topple or fall down while removing the protective
covers from the flanges.
NOTICE
Sensitive product
Valve parts may get damaged.
When removing the protective covers from the flanges, be careful to avoid damage to
the valve.

Series 571 INSTALLATION
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1. Remove plastic bag.
1 Protective covers
Figure 4-1
2. Remove protective covers (1).
Store protective covers. They may be useful when valve needs to be repacked.
3. Clean sealing surfaces; see «Figure 3-1» on page 7, with a cleanroom wiper soaked with pure
alcohol (Isopropanol).
4. Clean sealing surface with clean, dry and oil free compressed air.
1
1

INSTALLATION Series
571
12/31 Edition 2020-06-12 941265EA
4.2.2 Mounting to the system
1 Flange A (valve seat side)
2 Flange B
3 Screw holes
Figure 4-2
5. Mount valve to your system by using appropriate flange screws
(different quantity of screws required – depending on valve size).
6. Mount screws evenly in crosswise order until the seal touches the sealing surface.
7. Tighten all screws with the torques appropriate for the property classes of the screws. Apply the
torque gradually and in crosswise order.
8. Do not block Leak detection port, see sample picture at «Figure 4-3». Please find the exact
position of the Leak detection port on the dimensional drawing.
1
2
3
3

Series 571 INSTALLATION
941265EA Edition 2020-06-12 13/
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Leak detection port
Figure 4-3

INSTALLATION Series
571
14/31 Edition 2020-06-12 941265EA
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
NOTICE
Wrong sequence of connections
Valve mechanism may get damaged when electrical power is being connected before
compressed air is connected.
Always connect compressed air before connecting electrical power.
Use clean, dry or slightly oiled air only.
Admissible air pressure range, see product data sheet.
10. Connect compressed air according to the product data sheet and dimensional drawing.
Ordering
numbers:
571 ... - .
E11
571 ... - .
E21
571 ... - .
E31
571 ... - .
E41
without solenoid valve, without position indicator
without solenoid valve, with position indicator
with solenoid, without position indicator
with solenoid, with position indicator

Series 571 INSTALLATION
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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 sequence of connections
Valve mechanism may get damaged when electrical power is being connected before
compressed air is connected.
Always connect compressed air before connecting electrical power.
NOTICE
Wrong voltage
Electrical components may get damaged.
Supply electrical components with the correct voltage.
11. Connect position indicator according to the product data sheet and dimensional drawing.
12. Connect solenoid valve according to the product data sheet and dimensional drawing.
Ordering
numbers:
571 ... - .
E11
571 ... - .
E21
571 ... - .
E31
571 ... - .
E41
without solenoid valve, without position indicator
without solenoid valve, with position indicator
with solenoid, without position indicator
with solenoid, with position indicator

OPERATION Series
571
16/31 Edition 2020-06-12 941265EA
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
The valve is closed by a closing spring and opened with compressed air.
For technical details, see product data sheet.
Action Execution Procedure
To open
valve Without solenoid valve 571 ... - . E11- ....
571 ... - . E21- ....
Supply admissible compressed air to
connection on cylinder.
Standard solenoid valve
571 ... - . E31- ....
571 ... - . E41- ....
Supply admissible compressed air to
connection on solenoid valve.
Supply voltage (observe voltage specification on coil)
to connection SV.
Table 5-1
Action Execution Procedure
To close
valve Without solenoid valve 571 ... - . E11- ....
571 ... - . E21- ....
Release compressed air pressure through connection
on cylinder.
Standard solenoid valve
571 ... - . E31- ....
571 ... - . E41- ....
Release voltage from connection SV.
Table 5-2

Series 571 OPERATION
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5.2 Operation under increased temperature
Maximum allowed temperature, see product data sheet.
NOTICE
Inconstant temperatures
Performance of the valve may deteriorate.
– Actuate valve only after the bake-out temperature has been stable for two
–hours.
– If valve must be actuated during bake-out, make sure that the heating or
–cooling rate does not exceed 30 °C per hour in the temperature range
–from 200°C to 350 °C
– Make sure that the temperature differences over the whole body do not
–exceed 30 °C.
5.3 Bake-out
See product data sheet.
5.4 Behavior in case of air pressure drop
See product data sheet.

OPERATION Series
571
18/31 Edition 2020-06-12 941265EA
5.5 Behavior in case of power failure
See product data sheet.
5.5.1 Manual emergency operation
WARNING
Movable parts
Human body parts may get jammed and severely injured.
Keep human body parts away from movable parts.
The solenoid valves are provided with manual emergency operation (slotted screw). This screw allows
actuating the valve in case of a power failure. Compressed air must be supplied!
1 Slotted screw
Figure 5-1
To close the valve:
Turn the slotted screw (
1
) counter-clockwise to its stop.
To open the valve:
Turn the slotted screw (
1
) clockwise to its stop.
For remote operation make sure that the slotted screw is turned counter-clockwise
to its stop.
1

Series 571 OPERATION
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5.6 Trouble shooting
Failure Check Action See
Valve mechanism
does not move Compressed air Connect compressed air supply «4.3 Compressed air connection»
Electrical power Connect electrical
power «4.4 Electrical connection»
Operating pressure Adjust operating
pressure «4.3 Compressed air connection»
Position of slotted
screw Turn slotted screw to the correct position «5.5.1 Manual emergency operation»
Leak at gate Condition of gate seal Please contact VAT www.vatvalve.com
Operating pressure Adjust operating
pressure «4.3 Compressed air connection»
Leak at body Condition of bonnet
seal and sealing
surface
Please contact VAT www.vatvalve.com
Condition of bellows Please contact VAT www.vatvalve.com
Table 5-3
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
571
20/31 Edition 2020-06-12 941265EA
6 Maintenance
6.1 Maintenance intervals
Under clean operating conditions the valve does not require any maintenance during the specified
lifetime.
• Impacts from the process may require more frequent maintenance.
• When the valve has reached the specified lifetime; see product data sheet, we
recommend having it serviced by VAT. Please contact your nearest VAT service
center to get recommendations and an offer. You will find the addresses on our
website www.vatvalve.com.