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