VAT 48.2 Series Assembly instructions

Installation, Operating & Maintenance Instructions
Series 48.2, DN 63-160 (I.D. 2 ½ - 6")
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [email protected] www.vatvalve.com 273777ED
2007-03-30 1/19
All-Metal Gate Valve
with extended and compact pneumatic
actuator
This manual is valid for the valve ordering number(s):
extended:
48236- . E14/24/34/44
48240- . E14/24/34/44
48244- . E14/24/34/44
compact:
48236- . E71/72/73/74/77
48240- . E71/72/73/74/77
48244- . E71/72/73/74/77
The fabrication number is indicated on each product as per the label
below (or similar):
made in Switzerland
Fabrication No.: patented
. .
48
2
. .
–
. . ..
–
. . .. / . . . .
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!
compact

Installation, Operating & Maintenance Instructions
Series 48.2, DN 63-160 (I.D. 2 ½ - 6")
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [e-mail] www.vatvalve.com 273777ED
2007-03-30 2/19
Imprint:
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Manufacturer
Website
www.vatvalve.com
Phone
[phone]
Fax
[phone]
Email
[e-mail]
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 48.2, DN 63-160 (I.D. 2 ½ - 6")
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [e-mail] www.vatvalve.com 273777ED
2007-03-30 3/19
Contents:
1Use of product .......................................................................................................................................................... 4
1.1 Technical data.................................................................................................................................................... 4
2Installation................................................................................................................................................................. 4
2.1 Unpacking.......................................................................................................................................................... 4
2.2 Installation into the system................................................................................................................................. 4
2.3 Connections....................................................................................................................................................... 5
2.3.1 Compressed air connection..................................................................................................................... 5
2.3.2 Electrical connection................................................................................................................................ 6
2.3.3 Wiring diagrams solenoids....................................................................................................................... 6
2.3.4 Wiring diagram radiation resistant solenoid............................................................................................. 6
2.3.5 Wiring diagrams position indicator........................................................................................................... 6
2.3.6 Wiring diagrams solenoid and position indicator – common plug............................................................ 8
3Operation.................................................................................................................................................................. 9
3.1 Normal operation................................................................................................................................................ 9
3.2 Bakeout............................................................................................................................................................ 10
3.3 Behavior in case of compressed air pressure drop.......................................................................................... 10
3.4 Behavior in case of power failure..................................................................................................................... 10
3.5 Emergency operation at power failure (E4Gy)................................................................................................. 11
4Trouble shooting..................................................................................................................................................... 11
5Maintenance & repairs............................................................................................................................................ 12
6Drawing................................................................................................................................................................... 13
7Spare parts ............................................................................................................................................................. 14
8Warranty................................................................................................................................................................. 19

Installation, Operating & Maintenance Instructions
Series 48.2, DN 63-160 (I.D. 2 ½ - 6")
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [e-mail] www.vatvalve.com 273777ED
2007-03-30 4/19
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
Pressure range extreme UHV to 2 bar (abs)
Differential pressure on the gate 2 bar in either direction
Max. differential pressure at opening:
DN 63 – 160 500 mbar, 1 bar with reduced cycle life
Admissible temperature:
Valve extended ≤300°C open and closed
Valve compact ≤200°C open and closed
Pneumatic actuator ≤200°C (option: 300°C, radiation resistant E6Gy 140°C)
Position indicator ≤80°C (option: 200°C)
Solenoid ≤80°C
Position indicator: Contact rating ≤50 V AC / DC; ≤1.2 A (80°C version)
≤50 V AC / DC; ≤1 A (200°C version)
Solenoid see tag on solenoid
Further data according to VAT catalogue «Vacuum Valves 2008».
2 Installation
2.1 Unpacking
Be carefull during opening the boxes and nylon bag, do not contaminate the valve.
Also pay attention that valve and flanges are not damaged when the valve is lifting out of the box and
handled afterwards.
2.2 Installation into the system
Remove protection flanges only prior assembly into the vacuum system!
The valve must not support other components and has to be protected from forces of the system
(e.g.by bellows sections).

Installation, Operating & Maintenance Instructions
Series 48.2, DN 63-160 (I.D. 2 ½ - 6")
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [e-mail] www.vatvalve.com 273777ED
2007-03-30 5/19
2.3 Connections
2.3.1 Compressed air connection
Connect compressed air only if
- valve is installed into the vacuum system
- moving parts cannot be touched
Connection: internal thread R 1/8“ (1/8“ NPT for USA)
Connection for compressed air supply:
Compressed air pressure (min. - max. overpressure): 4 - 8 bar / 55 - 110 psig
Use only clean, dry or slightly oiled air!
Valves equipped with a fast closing device, may reduce the specified cycle lifetime
Without solenoid
Connections «open» and «closed» for air supply
Option: Radiation resistant solenoid (2x3/2way) E6Gy
Connections «open» and «closed» for air supply
With solenoid or pneumatic box (series 80)
Connection «1» for air supply, connections «3» and «5» for exhaust
Standard solenoid E4Gy
Option: Solenoid for impulse actuation E4Gy

Installation, Operating & Maintenance Instructions
Series 48.2, DN 63-160 (I.D. 2 ½ - 6")
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [e-mail] www.vatvalve.com 273777ED
2007-03-30 6/19
2.3.2 Electrical connection
Do not touch electrical parts under voltage!
Connect electrical power only if
- valve is 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.
2.3.3 Wiring diagrams solenoids
Standard solenoid E4Gy Option: Solenoid for impulse actuation E4Gy
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
2.3.4 Wiring diagram radiation resistant solenoid
Solenoid (2x3/2 way) Solenoid (2x3/2 way) 3 pole plug (with wire and plug
connection)
Radiation resistant E6Gy Radiation resistant E6Gy
MV
MV
1
2
power 2
11
2
MV = coil of solenoids MV = coil of solenoids
2.3.5 Wiring diagrams position indicator
Position indicators for max. 80°C ⎯contact rating ≤50 V AC / DC; ≤1.2 A
Standard position indicator Double position indicator

Installation, Operating & Maintenance Instructions
Series 48.2, DN 63-160 (I.D. 2 ½ - 6")
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [e-mail] www.vatvalve.com 273777ED
2007-03-30 7/19
with make contact switches with make contact switches - two each (option)
1 2
3
4
5 6
1
2
6
5
4
3
Lo
Lg
1 2
3
4
5 6
1
2
6
5
4
3
Lo
Lg
1 2
3
4
5 6
1
2
6
5
4
3
Lo
Lg
Lo = position indicator «open»
Lg = position indicator «closed» Lo = position indicator «open» Lg = position indicator «closed»
Position indicator with double throw switches
(option) Double position indicator with double throw
switches - two each (option)
6
5
4 3
2
1
3
1
2
4
6
5
Lo
Lg
6
5
4 3
2
1
3
1
2
4
6
5
Lo
Lg
6
5
4 3
2
1
3
1
2
4
6
5
Lo
Lg
Lo = position indicator «open»
Lg = position indicator «closed» Lo = position indicator «open» Lg = position indicator «closed»
Position indicators for max. 200°C ⎯contact rating ≤50 V AC / DC; ≤1 A
Single position indicator (option) Double position indicator (option)
3
1
2
4
6
5
Lo
Lg
3
1
2
4
6
5
Lo
Lg
3
1
2
4
6
5
Lo
Lg
Lo = position indicator «open»
Lg = position indicator «closed» Lo = position indicator «open» Lg = position indicator «closed»

Installation, Operating & Maintenance Instructions
Series 48.2, DN 63-160 (I.D. 2 ½ - 6")
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [e-mail] www.vatvalve.com 273777ED
2007-03-30 8/19
2.3.6 Wiring diagrams solenoid and position indicator – common plug
Position indicator for max. 80°C ⎯contact rating ≤50 V AC / DC; ≤1.2 A
Common plug for pos. indicator and solenoid, pos.
indicator with make contact switches (option) Common plug for pos. indicator and solenoid impulse, pos. indicator with make contact switches (option)
1 2
3
4
5 6
Lg
Lo
power 4
3
5
6
2
1
MV
6
5
43
2
12
5
6
3
1
4
power
Lo
Lg
MV
open
close
Lo = position indicator «open»
Lg = position indicator «closed» Lo = position indicator «open» Lg = position indicator «closed»
Position indicator for max. 80°C ⎯contact rating ≤50 V AC / DC; ≤1.2 A
12 pole common plug for pos.indicator and solenoids, pos.indicator rad.resistant 106Gy (108rad) with make
contact switches, solenoid 2x 3/2 way 220V / 50 Hz rad.resistant 106Gy (108rad)
MV1= solenoid 1 (close)
MV2= solenoid 2 (open)
Lo = position indicator «open»
Lg = position indicator
«closed»

Installation, Operating & Maintenance Instructions
Series 48.2, DN 63-160 (I.D. 2 ½ - 6")
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [e-mail] www.vatvalve.com 273777ED
2007-03-30 9/19
3 Operation
3.1 Normal operation
Opening of closed valve
- without solenoid:
•before valve is opened ⎯supply air pressure in closing direction
•air supply to connection «open»
•air release through connection «closed»
- with standard solenoid:
•supply specified control voltage to the coil
- with impulse solenoid:
•supply an impulse of specified control voltage to the coil for opening (pulse duration min. 50 ms)
-with radiation resistant solenoid:
•supply specified control voltage to the solenoid coil „open“ and coil „close“.

Installation, Operating & Maintenance Instructions
Series 48.2, DN 63-160 (I.D. 2 ½ - 6")
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [e-mail] www.vatvalve.com 273777ED
2007-03-30 10/19
Closing of open valve
- without solenoid:
•before valve is closed ⎯supply air pressure in opening direction
•air supply to connection «close»
•air release through connection «open»
- with standard solenoid:
•release control voltage
- with impulse solenoid:
•supply an impulse of specified control voltage to the coil for closing (pulse duration min. 50 ms)
-with radiation resistant solenoid:
•release control voltage from the solenoid coil „close“ and coil „open“.
3.2 Bakeout
extended compact
Valve: ≤300°C in open and closed position ≤200°C in open and closed position
Actuator: ≤200°C for max. 200h ≤200°C for max. 200h
Position indicator: ≤80°C (option: 200°C) ≤80°C (option: 200°C)
Solenoid ≤80°C ≤80°C
Heating and cooling rate: 50°C/h 50°C/h
Operate the valve only after the bake-out temperature has been stable for two hours. If actuation during bake-out is
required, the heating and cooling rate from 100°C to 200°C must not exceed 10°C/h.
Temperature differences exceeding 30°C throughout the valve are not allowed. They may affect the performance of
the valve.
3.3 Behavior in case of compressed air pressure drop
Valve closed: valve remains closed and leaktight
Valve open: valve position is undefined
3.4 Behavior in case of power failure
Standard solenoid: Valve closes
Solenoid for impulse actuation (option): Valve position does not change, a started movement will be completed.
Radiation resistant solenoid: Valve closes

Installation, Operating & Maintenance Instructions
Series 48.2, DN 63-160 (I.D. 2 ½ - 6")
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [e-mail] www.vatvalve.com 273777ED
2007-03-30 11/19
3.5 Emergency operation at power failure (E4Gy)
Solenoids with an emergency operation (slotted screw) to operate the valve in case of a power failure (with com-
pressed air available)
Standard solenoid
To close the valve:
Turn the slotted screw counter-clockwise to its stop
To open the valve:
Turn the slotted screw clockwise to its stop
For remote operation make sure that the slotted screw is turned
counter-clockwise to its stop.
Solenoid for impulse actuation
To close the valve:
Turn the slotted screw (coil «closed») clockwise to its stop. If the valve
is closed, turn the screw back to its original position.
To open the valve:
Turn the slotted screw (coil «open») clockwise to its stop. If the valve
is open, turn the screw back to its original position.
For remote operation make sure that both slotted screws are turned
counter-clockwise to their stop (original position).
Radiation resistant solenoid
In case of a power failure, the solenoid can be removed and compressed air can be connected directly to the
connection plate.
4 Trouble shooting
Failure Check Action
Power available? Check voltage!
Compressed air available? Check air pressure!
Valve mechanism does not move
Slotted screw in proper position? Check slotted screw!
When operating at atmosphere:
(not recommended) No reason for concernWhistling sound during opening/closing: When operating at vacuum: No reason for concern unless the
sound gets extensive
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 48.2, DN 63-160 (I.D. 2 ½ - 6")
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [e-mail] www.vatvalve.com 273777ED
2007-03-30 12/19
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 48.2, DN 63-160 (I.D. 2 ½ - 6")
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [e-mail] www.vatvalve.com 273777ED
2007-03-30 13/19
6 Drawing

Installation, Operating & Maintenance Instructions
Series 48.2, DN 63-160 (I.D. 2 ½ - 6")
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [e-mail] www.vatvalve.com 273777ED
2007-03-30 14/19
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.
The item numbers refer to the drawing on page 13.
Item Description Qty Parts/Ordering numbers
DN 63 DN 100 DN 160
21/25 Treated hexagon socket head cap screw 10 224837
14 224837 224837
required torque of bonnet screw 20 Nm 24 Nm 24 Nm
36/1 VATRING 1 39615-01 39986-01 35774-01
36/2 VATSEAL 1 247767 247768 247769
Vacuum seal kit, consisting of
VATRING (36/1) and VATSEAL (36/2) D-48236-.... (80989-R1) D-48240-.... (81458-R1) D-48244-.... (83884-R1)
Pneumatic seal kit, consisting of all elastomer seals
inside the pneumatic actuator:
Standard 200°C
80988-R1
81459-R1
83885-R1
actuator for 106Gy (option) 87369-R1 85226-R1 86997-R1
Air connection kit (solenoid on customer’s site)
Item
Description Version Qty. Part No.
44
Connection
kit actuator for 106Gy
1 86069-R1
44/1
Plate 1 81428-01
44/2
Screw 2 N-6013-463
44/3
O-ring actuator for 106Gy
2 N-7115-016
44/2
44/3
44/1

Installation, Operating & Maintenance Instructions
Series 48.2, DN 63-160 (I.D. 2 ½ - 6")
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [e-mail] www.vatvalve.com 273777ED
2007-03-30 15/19
Solenoid kit E4Gy (5/2-way standard)
Item
Description Qty. Part No.
43 Solenoid kit 1 80993-R1
43/1
Solenoid 1 N-7501-502
43/2
Socket 1 N-8501-300
43/3
Sound absorber 2 N-7705-001
43/4
Coil** 1 N-7510-2**
43/5
O-ring 2 N-7100-016
43/6
Screw 2 N-6024-562
Solenoid kit E4Gy (5/2-way impulse actuation)
Item
Description Qty. Part No.
43 Solenoid kit 1 84569-R1
43/1
Connection plate 1 93708-01
43/2
Hollowscrew 2 N-5060-010
43/3
Screw 2 N-6013-462
43/4
Gasket 4 N-7016-010
43/5
O-ring 2 N-7100-016
43/6
Solenoid 1 N-7502-504
43/7
Sound absorber 2 N-7705-001
43/8
Socket 2 N-8501-300
43/9
Coil** 2 N-7510-2**
Solenoid kit E 6Gy (3/2-way standard)
Item Description Qty. Part No.
47 Solenoid kit 1 90242-R1
47/1 Connection plate 1 81428-01
47/2 Screw 2 N-6013-463
47/3 O-ring 2 N-7115-016
47/5 3/2 way solenoid 2 218445
47/6 Screwed connection
2 N-7610-031
47/7 Adjust nippel 2 N-7628-031
47/8 sound absorber 1 N-7705-201
47/9 sound absorber 1 N-7705-001
47/10
bushing 1 N-7501-005
**) Specify voltage! (e.g. N-7510-2-220V 50Hz)
43/2
43/4
43/6
43/3
43/5
43/1
43/2
43/4
43/3
43/5
43/1
43/6 43/9
43/8
43/7

Installation, Operating & Maintenance Instructions
Series 48.2, DN 63-160 (I.D. 2 ½ - 6")
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [e-mail] www.vatvalve.com 273777ED
2007-03-30 16/19
Solenoid kit (5/2-way standard) Item
Description Qty. Part No.
43 Solenoid kit 1 207093
87998-R1
43/1
Solenoid 1 N-7501-502
43/3
Sound absorber 2 N-7705-001
43/4
Coil** 1 N-7510-2**
43/5
O-ring 2 N-7100-016
43/6
Screw 2 N-6024-562
43/7
Cover 1 202743
**) Specify voltage! (e.g. N-7510-2-220V 50Hz)
Position indicators 80°C (single + double) in various versions with adapter
Item Description Version Qty. Part No.
E4Gy E6Gy
41 Adapter complete 1 72228-R1 72228-R1
41/7 Screw 2 N-6016-503 N-6016-503
42 BS Mini position indicator make contact switch with common plug
for pos. indicator and solenoid 1 87997-R1 256480
42/1 Position indicator make contact switch with common plug
for pos. indicator and solenoid 1 82560-R1 256481
42/2 Slider 1 69846-01 69846-01
42/10 Screw 4 N-6024-531 N-6024-531
42/15 Socket 1 N-8504-002 N-8504-002

Installation, Operating & Maintenance Instructions
Series 48.2, DN 63-160 (I.D. 2 ½ - 6")
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [e-mail] www.vatvalve.com 273777ED
2007-03-30 17/19
Position indicators 80°C (single + double) in various versions with adapter
Item Description Version Qty. Part No.
single double
41 Adapter complete 1 72228-R1
1 83923-R1
41/6 Spring ring 2 2 N-6162-404
41/7 Screw 2 2 N-6016-503
42 BS Mini position indicator make contact switches 1 2 76664-R1
make contact switches with cable socket, snaked
1 2 203843
double throw switches 1 2 85399-R1
make contact radiation resistant 1 2 80074-R1
double throw radiation resistant 1 2 83953-R1
double throw radiation resistant with cable
socket, snaked 1 2 412057
make contact switch with common plug for pos.
indicator and solenoid 1 - 87997-R1
42/1 Position indicator make contact switches 1 2 71852-R1
double throw switches 1 2 70606-R1
make contact radiation resistant 1 2 80075-R1
double throw radiation resistant 1 2 83954-R1
make contact switch with common plug for pos.
indicator and solenoid 1 - 82560-R1
42/2 Slider 1 2 69846-01
42/10
Screw 4 8 N-6024-531
42/15
Socket
Cable socket, snaked 1 1 2 2 N-8504-002 N-8504-005

Installation, Operating & Maintenance Instructions
Series 48.2, DN 63-160 (I.D. 2 ½ - 6")
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [e-mail] www.vatvalve.com 273777ED
2007-03-30 18/19
Position indicators 200°C (single + double) with adapter
Item Description Version Qty. Part No.
single double
41 Adapter complete 1 72228-R1
1 83923-R1
41/6 Spring ring 2 2 N-6162-404
41/7 Screw 2 2 N-6016-503
42 BS Mini position indicator double throw switches 1 2 241823
42/1 Position indicator 1 2 241824
42/2 Slider 1 2 241825
42/10 Screw 4 8 N-6024-531
42/11 Spring ring 4 8 N-6160-406

Installation, Operating & Maintenance Instructions
Series 48.2, DN 63-160 (I.D. 2 ½ - 6")
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [e-mail] www.vatvalve.com 273777ED
2007-03-30 19/19
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 in-
stallation 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 FOREGOING 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.