VAT 244 Series Assembly instructions

Installation, Operating & Maintenance Instructions
Series 244, DN 10 - 50 (I.D.⅝" - 2")
Series 245, DN 16 - 50 (I.D. 1" - 2")
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [email protected] www.vatvalve.com
258343EE
2013-09-16
1/14
Vacuum Angle valve (Series 244)
Vacuum Inline valve (Series 245)
●with pneumatic actuator,
single acting with opening spring (NO)
This manual is valid for the valve ordering number(s):
244…
245…
The fabrication number is indicated on each product as per the label
below (or similar):
made in Switzerland
Fabrication No.:
patented
. .
24...–....–..../....
A–......
Fabrication number
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 & Maintenance Instructions
Series 244, DN 10 - 50 (I.D.⅝" - 2")
Series 245, DN 16 - 50 (I.D. 1" - 2")
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [email protected] www.vatvalve.com
258343EE
2013-09-16
2/14
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 & Maintenance Instructions
Series 244, DN 10 - 50 (I.D.⅝" - 2")
Series 245, DN 16 - 50 (I.D. 1" - 2")
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [email protected] www.vatvalve.com
258343EE
2013-09-16
3/14
Contents:
1Use of product........................................................................................................................................................... 4
1.1 Technical data for standard valve....................................................................................................................... 4
2Installation................................................................................................................................................................. 5
2.1 Unpacking .......................................................................................................................................................... 5
2.2 Installation into the system................................................................................................................................. 5
2.3 Connections ....................................................................................................................................................... 5
2.3.1 Compressed air connection...................................................................................................................... 5
2.3.2 Electrical connection ................................................................................................................................ 6
3Operation.................................................................................................................................................................. 8
3.1 Normal operation................................................................................................................................................ 8
3.2 Operation under increased temperature............................................................................................................. 8
3.3 Behavior in case of compressed air pressure drop ............................................................................................ 8
3.4 Behavior in case of power failure ....................................................................................................................... 8
4Trouble shooting ....................................................................................................................................................... 8
5Maintenance & repairs.............................................................................................................................................. 9
5.1 Replacement of vacuum seals ......................................................................................................................... 10
5.1.1 Dismount "actuator/gate assembly"........................................................................................................ 10
5.1.2 Replacement of plate seal...................................................................................................................... 10
5.1.3 Replacement of feedthrough O-ring (15/3)............................................................................................. 11
5.1.4 Mount "actuator/plate assembly"............................................................................................................ 12
6Drawing................................................................................................................................................................... 12
7Spare parts ............................................................................................................................................................. 13
8Warranty ................................................................................................................................................................. 14

Installation, Operating & Maintenance Instructions
Series 244, DN 10 - 50 (I.D.⅝" - 2")
Series 245, DN 16 - 50 (I.D. 1" - 2")
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [email protected] www.vatvalve.com
258343EE
2013-09-16
4/14
1 Use of product
Use product for clean and dry indoor vacuum applications under the conditions indicated in chapter «Technical data» only!
Other applications are only allowed with the written permission of VAT.
1.1 Technical data for standard valve
Leak rate 1 x 10-9 mbar l / s
Pressure range when valve is open 1 x 10-7 mbar to 5 bar (abs)
Conductance in high vacuum DN 10: 3 l s-1
DN 16: 5 l s-1
DN 25: 14 l s-1
DN 40: 45 l s-1
DN 50: 80 l s-1
Differential pressure on the plate
in opening direction 2 bar
in closing direction 5 bar
Differential pressure at opening 1 bar in either direction
Admissible temperature valve body:
aluminium / stainless steel 0°C to 120°C / 0°C to 150°C
actuator 0°C to 120°C
position indicator 0°C to 80°C
solenoid 0°C to 80°C
Cycles until first service 3 million at T max 80°C
Position indicator contact rating voltage 50 V AC or 50 V DC
current 0,1 A 0,1 A
power 1,0 W 1,0 W
Position indicator cable standard 500 mm, no plug
Solenoid voltage see label on solenoid
Technical data for valve with specific options or for valve hard anodized according to «product data sheet».
Product data sheet on request.

Installation, Operating & Maintenance Instructions
Series 244, DN 10 - 50 (I.D.⅝" - 2")
Series 245, DN 16 - 50 (I.D. 1" - 2")
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [email protected] www.vatvalve.com
258343EE
2013-09-16
5/14
2 Installation
2.1 Unpacking
Before unpacking the valve, make sure that the packaging is in impeccable condition and the valve has not suffered
damage.
Note! The plastic packing material and/or protective covers may only be removed immediately before the valve is
mounted into the system. Unprotected sealing surfaces must be treated with care and kept clean.
2.2 Installation into the system
DN (nom. I.D.)
Axial tensile or
compressive force
«FA»
Bending moment
«M»
mm
inch
N
lbf
Nm
lbf .ft
10
3/8
25
6
1
0.8
16
5/8
25
6
1
0.8
25
1
70
16
3
2.2
40
1½
100
22
6
4.5
50
2
150
34
11
8
A combination of both forces «FA» and «M» is prohibited. Please contact VAT.
2.3 Connections
2.3.1 Compressed air connection
Connect compressed air only when
- valve is installed into the system
- moving parts cannot be touched
The valve is opened by a spring at compressed air failure.
Connection: Internal thread M5 (adapter as option)
Compressed air pressure (min. - max. overpressure): 4 - 8 bar / 60 - 115 psi
Use clean, dry or slightly oiled air only!

Installation, Operating & Maintenance Instructions
Series 244, DN 10 - 50 (I.D.⅝" - 2")
Series 245, DN 16 - 50 (I.D. 1" - 2")
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [email protected] www.vatvalve.com
258343EE
2013-09-16
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2.3.2 Electrical connection
Do not touch parts under voltage!
Hot surfaces; do not touch!
Connect electrical power only when
- valve is installed into the system
- moving parts cannot be touched
Make sure that the control voltage is in accordance with the voltage stated on the solenoid!
Plug for solenoid is supplied with the valve.
Connections:
Solenoid
MV
Coil solenoid valve
Spule Steuerventil
Bobine de l'électrovanne
Electrical connection
Elektrischer Anschluss
Branchement électrique
Compressed air connection
Pressluft-Anschluss
Raccordement de l’air comprimé
Air inlet :
Lufteingang :
Entrée d’air :
Exhaust :
Entlüftung :
Echappement :
2
1
power MV
2
1
overpressure Überdruck surpression
P = bar = MPamin
max
4 0,4
8 0,8P = bar = MPa
M5 Ø1,8
Position indicator «open/closed»
Admissible temperature 80°C (standard)
Position indicator «open/closed»
Admissible temperature 120°C (option)
Lo
Position indicator "open"
Lagemelder "offen"
Indicateur de position "ouvert"
Electrical connection
Elektrischer Anschluss
Branchement électrique
Compressed air connection
Pressluft-Anschluss
Raccordement de l’air comprimé
Air inlet :
Lufteingang :
Entrée d’air :
Exhaust :
Entlüftung :
Echappement :
Lg
Position indicator "closed"
Lagemelder "geschlossen"
Indicateur de position "fermé"
overpressure Überdruck surpression
P = bar = MPamin
max
4 0,4
8 0,8P = bar = MPa
1
2
3
4
Lg
Lo
bn
gn
wh
ye
R1/8"
(NPT for USA) R1/8"
(NPT for USA)
Lo
Position indicator "open"
Lagemelder "offen"
Indicateur de position "ouvert"
Electrical connection
Elektrischer Anschluss
Branchement électrique
Compressed air connection
Pressluft-Anschluss
Raccordement de l’air comprimé
Air inlet :
Lufteingang :
Entrée d’air :
Exhaust :
Entlüftung :
Echappement :
Lg
Position indicator "closed"
Lagemelder "geschlossen"
Indicateur de position "fermé"
M5M5
overpressure Überdruck surpression
P = bar = MPamin
max
4 0,4
8 0,8P = bar = MPa
1
2
3
4
Lg
Lo
bk
gn
wh
rd

Installation, Operating & Maintenance Instructions
Series 244, DN 10 - 50 (I.D.⅝" - 2")
Series 245, DN 16 - 50 (I.D. 1" - 2")
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [email protected] www.vatvalve.com
258343EE
2013-09-16
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Position indicator with plug (option)
Plug 7 pin (standard wiring)
Plug 7 pin (special wiring)
Lo
Position indicator "open"
Lagemelder "offen"
Indicateur de position "ouvert"
Lg
Position indicator "closed"
Lagemelder "geschlossen"
Indicateur de position "fermé"
Electrical connection
Elektrischer Anschluss
Branchement électrique
Compressed air connection
Pressluft-Anschluss
Raccordement de l’air comprimé
Air inlet :
Lufteingang :
Entrée d’air :
Exhaust :
Entlüftung :
Echappement :
MV
Coil solenoid valve
Spule Steuerventil
Bobine de l'électrovanne
overpressure Überdruck surpression
P = bar = MPamin
max
4 0,4
8 0,8P = bar = MPa
M5 Ø1,8
6
5
43
2
1
2
1
6
5
1
2
Lg
Lo
1
2MV
power
Lo
Position indicator "open"
Lagemelder "offen"
Indicateur de position "ouvert"
Lg
Position indicator "closed"
Lagemelder "geschlossen"
Indicateur de position "fermé"
Electrical connection
Elektrischer Anschluss
Branchement électrique
Compressed air connection
Pressluft-Anschluss
Raccordement de l’air comprimé
Air inlet :
Lufteingang :
Entrée d’air :
Exhaust :
Entlüftung :
Echappement :
MV
Coil solenoid valve
Spule Steuerventil
Bobine de l'électrovanne
overpressure Überdruck surpression
P = bar = MPamin
max
4 0,4
8 0,8P = bar = MPa
M5 Ø1,8
6
5
43
2
1
2
1
6
5
1
2
Lg
Lo
1
2MV
power
Lo
Position indicator "open"
Lagemelder "offen"
Indicateur de position "ouvert"
Lg
Position indicator "closed"
Lagemelder "geschlossen"
Indicateur de position "fermé"
Electrical connection
Elektrischer Anschluss
Branchement électrique
Compressed air connection
Pressluft-Anschluss
Raccordement de l’air comprimé
Air inlet :
Lufteingang :
Entrée d’air :
Exhaust :
Entlüftung :
Echappement :
MV
Coil solenoid valve
Spule Steuerventil
Bobine de l'électrovanne
overpressure Überdruck surpression
P = bar = MPamin
max
4 0,4
8 0,8P = bar = MPa
M5 Ø1,8
6
5
43
2
1
2
1
6
5
1
2
Lg
Lo
1
2MV
power
Lo
Position indicator "open"
Lagemelder "offen"
Indicateur de position "ouvert"
Lg
Position indicator "closed"
Lagemelder "geschlossen"
Indicateur de position "fermé"
Electrical connection
Elektrischer Anschluss
Branchement électrique
Compressed air connection
Pressluft-Anschluss
Raccordement de l’air comprimé
Air inlet :
Lufteingang :
Entrée d’air :
Exhaust :
Entlüftung :
Echappement :
MV
Coil solenoid valve
Spule Steuerventil
Bobine de l'électrovanne
overpressure Überdruck surpression
P = bar = MPamin
max
4 0,4
8 0,8P = bar = MPa
M5 Ø1,8
6
5
43
2
1
2
1
6
5
3
4
Lg
Lo
1
2MV
power
D-sub plug 9 pin
M8 plug 4 pin
Lo
Position indicator "open"
Lagemelder "offen"
Indicateur de position "ouvert"
Electrical connection
Elektrischer Anschluss
Branchement électrique
Compressed air connection
Pressluft-Anschluss
Raccordement de l’air comprimé
Air inlet :
Lufteingang :
Entrée d’air :
Exhaust :
Entlüftung :
Echappement :
Lg
Position indicator "closed"
Lagemelder "geschlossen"
Indicateur de position "fermé"
Betriebsspannung
max. 50 V DC
overpressure Überdruck surpression
P = bar = MPamin
max
4 0,4
8 0,8P = bar = MPa
Air inlet :
Lufteingang :
Entrée d’air :
Exhaust :
Entlüftung :
Echappement :
43 2 1
5
6789
1
7
2
8
Lo
Lg
Ø4mm
plug connection Ø4mm plug connection
Lo
Position indicator "open"
Lagemelder "offen"
Indicateur de position "ouvert"
Electrical connection
Elektrischer Anschluss
Branchement électrique
Compressed air connection
Pressluft-Anschluss
Raccordement de l’air comprimé
Air inlet :
Lufteingang :
Entrée d’air :
Exhaust :
Entlüftung :
Echappement :
Lg
Position indicator "closed"
Lagemelder "geschlossen"
Indicateur de position "fermé"
M5M5
overpressure Überdruck surpression
P = bar = MPamin
max
4 0,4
8 0,8P = bar = MPa
31
2 4
male-view on pins
2
1
4
3
Lo
Lg
bn
bk
wh
bu
Common connector for solenoid and position indicator (option)
Plug 7 pin (standard wiring)
Plug 7 pin (special wiring)
Lo
Position indicator "open"
Lagemelder "offen"
Indicateur de position "ouvert"
Lg
Position indicator "closed"
Lagemelder "geschlossen"
Indicateur de position "fermé"
Electrical connection
Elektrischer Anschluss
Branchement électrique
Compressed air connection
Pressluft-Anschluss
Raccordement de l’air comprimé
Air inlet :
Lufteingang :
Entrée d’air :
Exhaust :
Entlüftung :
Echappement :
MV
Coil solenoid valve
Spule Steuerventil
Bobine de l'électrovanne
overpressure Überdruck surpression
P = bar = MPamin
max
4 0,4
8 0,8P = bar = MPa
M5 Ø1,8
6
5
43
2
1
6
5
1
2
Lg
Lo
3
4MV
Lo
Position indicator "open"
Lagemelder "offen"
Indicateur de position "ouvert"
Lg
Position indicator "closed"
Lagemelder "geschlossen"
Indicateur de position "fermé"
Electrical connection
Elektrischer Anschluss
Branchement électrique
Compressed air connection
Pressluft-Anschluss
Raccordement de l’air comprimé
Air inlet :
Lufteingang :
Entrée d’air :
Exhaust :
Entlüftung :
Echappement :
MV
Coil solenoid valve
Spule Steuerventil
Bobine de l'électrovanne
6
5
43
2
1
overpressure Überdruck surpression
P = bar = MPamin
max
4 0,4
8 0,8P = bar = MPa
M5 Ø1,8
6
5
3
4
Lg
Lo
1
2MV

Installation, Operating & Maintenance Instructions
Series 244, DN 10 - 50 (I.D.⅝" - 2")
Series 245, DN 16 - 50 (I.D. 1" - 2")
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [email protected] www.vatvalve.com
258343EE
2013-09-16
8/14
3 Operation
3.1 Normal operation
Valve with pneumatic actuator: - valve is opened by a spring (NO)
- valve is closed pneumatically
3.2 Operation under increased temperature
See «1.1 Technical data»
3.3 Behavior in case of compressed air pressure drop
Valve closed: valve opens
Valve open: valve remains open
3.4 Behavior in case of power failure
Valve is opened by a spring
4 Trouble shooting
Failure
Check
Action
Valve does not close
Power available?
Connect correct voltage
Compressed air available?
Connect correct air pressure
If you need any further information, please contact one of our service centers. You can find the addresses on our website:
http://www.vat.ch

Installation, Operating & Maintenance Instructions
Series 244, DN 10 - 50 (I.D.⅝" - 2")
Series 245, DN 16 - 50 (I.D. 1" - 2")
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [email protected] www.vatvalve.com
258343EE
2013-09-16
9/14
5 Maintenance & repairs
Under clean operating conditions, the valve does not require any maintenance during the specified cycle life.
Contamination from the process may influence the function and requires more frequent maintenance.
Before carrying out any maintenance or repairs, please contact VAT. It has to be individually decided whether the
maintenance/repair can be performed by the customer or has to be carried out by VAT. The fabrication number on the
valve
made in Switzerland
Fabrication No.:
patented
. .
. . . . . – . . . . – . . . . / . . . .
A – . . . . . .
Fabrication number
has always to be specified.
All supplies (e. g. compressed air, electrical power) must be disconnected for removal/installation of the valve from/into the
system and for maintenance work.
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 must be free of harmful substances such as e.g. toxical, caustic or microbiological ones. If
products are radioactively contaminated, fill in the VAT form «Contamination and Radiation Report» and send it with the
product. The form is available at VAT. The maximum values indicated in the form must not be exceeded.

Installation, Operating & Maintenance Instructions
Series 244, DN 10 - 50 (I.D.⅝" - 2")
Series 245, DN 16 - 50 (I.D. 1" - 2")
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [email protected] www.vatvalve.com
258343EE
2013-09-16
10/14
5.1 Replacement of vacuum seals
The item numbers in brackets refer to the drawing on page 12
5.1.1 Dismount "actuator/gate assembly"
Remove 4 screws (60) uniformly and crosswise
Attention: Loaded spring!
Withdraw "actuator/gate assembly" carefully from body (pneumatic actuator)
Remove bonnet seal (O-ring, 62) from groove
5.1.2 Replacement of plate seal
Dismount "actuator/gate assembly" (see 5.1.1)
Pick O-ring (61) with a needle and pull it out of groove
Attention: Do not damage the sealing surface!
Check sealing surface and clean it with alcohol
Put new O-ring (61) on plate groove and press it crosswise into groove at 4 points
Press O-ring uniformly into groove
Mount "actuator/gate assembly" (see 5.1.4)

Installation, Operating & Maintenance Instructions
Series 244, DN 10 - 50 (I.D.⅝" - 2")
Series 245, DN 16 - 50 (I.D. 1" - 2")
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [email protected] www.vatvalve.com
258343EE
2013-09-16
11/14
5.1.3 Replacement of feedthrough O-ring (15/3)
Dismount "actuator/gate assembly" (see 5.1.1)
Dismount position indicator or cover (42)
Compress insert –between plate (15/2) and guiding bushing (26/11) –in a vice
Close vice and press plate (15/2) against the guiding bushing (26/11) (see drawing) until the circlip
(26/10) can be removed from the shaft
Attention: Loaded spring!
Carefully open vice and remove relaxed "insert".
Remove the parts 26/11, 26/5, 26/4 and 15/1 from plate (15/2) by axially disperse the parts
Pick feedthrough O-ring (15/3) with a needle and pull it out of groove
Attention: Do not damage the sealing surface!
Clean all parts and slightly lubricate all O-rings, guiding and sliding surfaces with VAT vacuum grease
(see spare parts)
Assembly:
- Put O-ring (15/3) into groove of feedthrough end piece (15/1)
- Assemble 26/4, 26/5, 26/11
- Clamp actuator –between plate (15/2) and guiding bushing (26/11) –into a vice, close vice and press
plate (15/2) against guiding the bushing (26/11) until the circlip (26/10) can be put into the groove
Insert circlip 26/10 so that it snaps into groove
Carefully open vice and simultaneously check whether the circlip is being pulled into the dent of the
piston

Installation, Operating & Maintenance Instructions
Series 244, DN 10 - 50 (I.D.⅝" - 2")
Series 245, DN 16 - 50 (I.D. 1" - 2")
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [email protected] www.vatvalve.com
258343EE
2013-09-16
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5.1.4 Mount "actuator/plate assembly"
Check and clean sealing surfaces of bonnet flange and valve seat
Put bonnet seal (O-ring, 62) into body
Carefully insert "actuator/plate assembly". Do not cant!
Fasten 4 screws (60) uniformly and crosswise in 2 to 3 steps
Perform function and leak test
6 Drawing
(Drawing shows the angle valve version. Inline version has a different body.)

Installation, Operating & Maintenance Instructions
Series 244, DN 10 - 50 (I.D.⅝" - 2")
Series 245, DN 16 - 50 (I.D. 1" - 2")
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [email protected] www.vatvalve.com
258343EE
2013-09-16
13/14
7 Spare parts
Please specify the fabrication number of the valve (see yellow label on valve) when ordering spare parts. This is
to ensure that the appropriate spare parts are supplied.
Item
Description
Extras
1
Body
15
Shaft feedthrough complete
15/1
Feedthrough end piece
15/2
Plate
15/3
Shaft feedthrough O-ring
26
Actuator complete
26/2
Piston
26/4
Support bushing
26/5
Spring
26/7
O-ring for pneumatic actuator
26/8
O-ring for pneumatic actuator
26/9
O-ring for pneumatic actuator
26/10
Circlip
26/11
Guiding bushing
42
Position indicator complete
60
Srew
61
Plate seal (O-ring)
62
Bonnet seal (O-ring)
Seal kit for pneumatics consisting of items 26/7, 26/8, 26/9
Seal kit vacuum consisting of items 15/3, 61,62
VAT vacuum grease
10 g
Solenoid
Item
Description
Voltage (10 %)
44
solenoid
12 VDC
24 VDC
48 VDC
110 VDC
24 VAC / 50-60 Hz
48 VAC / 50-60 Hz
100 VAC / 50-60 Hz
115 VAC / 50-60 Hz
200 VAC / 50-60 Hz

Installation, Operating & Maintenance Instructions
Series 244, DN 10 - 50 (I.D.⅝" - 2")
Series 245, DN 16 - 50 (I.D. 1" - 2")
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [email protected] www.vatvalve.com
258343EE
2013-09-16
14/14
230 VAC / 50-60 Hz
8 Warranty
Each product sold by VAT Vakuumventile AG (VAT) is warranted to be free from the manufacturing defects that adversely
affect the normal functioning thereof during the warranty period stated in VAT's «Terms of Sale» immediately following
delivery thereof by VAT, provided that the same is properly operated under conditions of normal use and that regular,
periodic maintenance and service is performed or replacements made, in accordance with the instructions provided by
VAT. The foregoing warranty shall not apply to any product or component that has been repaired or altered by anyone
other than an authorized VAT representative or that has been subject to improper installation or abuse, misuse, negligence
or accident. VAT shall not be liable for any damage, loss, or expense, whether consequential, special, incidental, direct or
otherwise, caused by, arising out of or connected with the manufacture, delivery (including any delay in or failure to deliver),
packaging, storage or use of any product sold or delivered by VAT shall fail to conform to the foregoing warranty or to the
description thereof contained herein, the purchaser thereof, as its exclusive remedy, shall upon prompt notice to VAT of
any such defect or failure and upon the return of the product, part or component in question to VAT at its factory, with
transportation charges prepaid, and upon VAT's inspection confirming the existence of any defect inconsistent with said
warranty or any such failure, be entitled to have such defect or failure cured at VAT's factory and at no charge therefor, by
replacement or repair of said product, as VAT may elect. VAT MAKES NO WARRANTY OR REPRESENTATION OF ANY
KIND, EXPRESS OR IMPLIED, (INCLUDING NO WARRANTY OR MERCHANTABILITY), EXCEPT FOR THE FORE-
GOING WARRANTY AND THE WARRANTY THAT EACH PRODUCT SHALL CONFORM TO THE DESCRIPTION
THEREOF CONTAINED HEREIN, and no warranty shall be implied by law.
Furthermore, the «Terms of sale» at the back of the price list are applicable.