VAT 190 Series Assembly instructions

Installation, Operating & Maintenance Instructions
Series 19.0, DN 900mm (36”)
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [e-mail] www.vatvalve.com 284928EA
2009-03-11-11-29
1/16
Vacuum Gate Valve
With double acting pneumatic actuator
This manual is valid for the valve ordering number(s):
19059-_E24 / _E44
The fabrication number is indicated on each product as per the label
below (or similar):
made in Switzerland
Fabrication No.: patented
. .
19
.. .
–
. .. .
–
. .. ./ .. . .
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 19.0, DN 900mm (36”)
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [e-mail] www.vatvalve.com 284928EA
2009-03-11-11-29
2/16
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 19.0, DN 900mm (36”)
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [e-mail] www.vatvalve.com 284928EA
2009-03-11-11-29
3/16
Contents:
1Use of product .......................................................................................................................................................... 4
1.1 Technical data.................................................................................................................................................... 4
2Installation................................................................................................................................................................. 5
2.1 Unpacking.......................................................................................................................................................... 5
2.2 Installation into the system................................................................................................................................. 6
2.3 Admissible forces............................................................................................................................................... 7
2.4 Connections....................................................................................................................................................... 7
2.4.1 Compressed air connection ..................................................................................................................... 7
2.4.2 Electrical Power connection..................................................................................................................... 8
3Function of valve....................................................................................................................................................... 9
3.1 Mechanism with VATLOCK................................................................................................................................ 9
3.2 Actuator with shaft feed through ...................................................................................................................... 10
4Operation................................................................................................................................................................ 11
4.1 Normal operation.............................................................................................................................................. 11
4.2 Operation under increased temperature.......................................................................................................... 11
4.3 Behavior in case of compressed air pressure drop.......................................................................................... 11
4.4 Behavior in case of power failure..................................................................................................................... 11
4.5 Emergency operation at power failure ............................................................................................................. 11
5Trouble shooting..................................................................................................................................................... 12
6Maintenance & repairs............................................................................................................................................ 12
6.1 Replacement of actuator/mechanism assembly for cleaning:.......................................................................... 13
7Spare parts ............................................................................................................................................................. 16
8Warranty................................................................................................................................................................. 16

Installation, Operating & Maintenance Instructions
Series 19.0, DN 900mm (36”)
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [e-mail] www.vatvalve.com 284928EA
2009-03-11-11-29
4/16
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
Technical data
Pressure range 1 x 10-7 mbar to 1 bar (abs)
Differential pressure on the gate 1 bar in either direction
Max. differential pressure at opening 10 mbar
Admissible temperature: Valve < 150°C
Pneumatic actuator < 50°C
Position indicator < 80°C
Solenoid < 50°C
Maximum temperature difference between flange
side “A” and side “B” 40°C
Heating and cooling rate < 5°C h-1
Position indicator:
Voltage
Current
Voltage drop
Leakage current
Magnetic sensitivity
Switching frequency
Switching status
Connection
[V]
[mA]
[V]
[mA]
[mT]
[Hz]
LED
10 ... 30 DC
5 … 100
< 3.5
< 0.8
2.5
4000
Yellow
PUR cable / 2m / 2x AWG26
Solenoid:
see tag on solenoid
Mounting position: Any
(actuator downwards or valve horizontal on
request)

Installation, Operating & Maintenance Instructions
Series 19.0, DN 900mm (36”)
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [e-mail] www.vatvalve.com 284928EA
2009-03-11-11-29
5/16
2 Installation
2.1 Unpacking
The valve is packed into a wooden box. The valve has a few threaded holes for M16 Eyebolds. Use this threats to lift the
valve out of the packing.
Do not lift the valve on the red marked threads!
These threads are only for service purposes.
You can lift the valve on the green marked threads.
Use the included special eye bolts.
Ensure that the strips are strong enough.

Installation, Operating & Maintenance Instructions
Series 19.0, DN 900mm (36”)
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [e-mail] www.vatvalve.com 284928EA
2009-03-11-11-29
6/16
2.2 Installation into the system
Clean the sealing surface and the O-ring seal of the mating flange. Move the valve in the correct mounting position with
the crane. Attention: Do not hit the sealing surfaces during manipulation! Set 2 screws in one line and then another 2
screws 90° turned to the first line. Fasten the 4 screws crosswise until the O-ring seal has contact with the valve sealing
surface. Afterwards set all the remaining screws and tighten the screws in clockwise order.
The valve is designed to be installed in horizontal pipings. (see picture) Actuator downwards and pipe vertical on request.

Installation, Operating & Maintenance Instructions
Series 19.0, DN 900mm (36”)
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [e-mail] www.vatvalve.com 284928EA
2009-03-11-11-29
7/16
2.3 Admissible forces
Forces from evacuating the system, from the weight of other components, and 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 are admissible:
DN (nom. I.D.) Axial tensile or
compressive force «FA» Bending moment «M»
mm inch N lbf Nm
lbf •ft
900 36 9800 2200 1274 940
FAM
2.4 Connections
2.4.1 Compressed air connection
Compressed air may only be connected if
- valve has been installed into the vacuum system
- moving parts cannot be touched
Connect compressed air at the place marked (internal thread G 3/8“ / plug in connection ø12mm)
DN900: Compressed air pressure (min. - max. overpressure): 5 - 7 bar / 70 - 100 psig
Use only clean, dry or slightly oiled air!
If a combination of both forces («FA» and «M») occurs, the values mentioned
above are invalid. Please contact VAT for more information.

Installation, Operating & Maintenance Instructions
Series 19.0, DN 900mm (36”)
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [e-mail] www.vatvalve.com 284928EA
2009-03-11-11-29
8/16
2.4.2 Electrical Power connection
Do not touch any electrically charged parts!
Electrical power may only be connected if
- valve has been installed into the vacuum system
- moving parts cannot be touched
Verify that mains voltage matches voltage stated on the solenoid!
Wire solenoid and position indicator according to the following diagrams:
Solenoid (standard)
Position indicator / magnetic sensors
MV
2
1
power 2
1
MV = coil of solenoid
Option: Solenoid for impuls actuation
2
1
close
open 1
2
power
2
1
1
2
MV
MV
Minimum pulse duration 50ms
MV1 = Coil of solenoid „open“
MV2 = Coil of solenoid „closed“
brown
blue (output)
Position
indicator:
OPEN
Position
indicator:
CLOSED

Installation, Operating & Maintenance Instructions
Series 19.0, DN 900mm (36”)
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [e-mail] www.vatvalve.com 284928EA
2009-03-11-11-29
9/16
3 Function of valve
3.1 Mechanism with VATLOCK
Gate valves with VATLOCK system are mechanically locked in the closed position.
In the open position the mechanism is not locked. Leaf springs(3) hold the gate(1) and counter plate(2) against the
carriage with the ball retains. The ball pairs are in the detents(5).
For closing, the mechanism is moved forward into the closing position.
The locking starts after the leaf spring stop(7) touches the body. The ball retainers move the ball pairs(4) out of the
dentens. Gate and counter plate are spread apart. The gate seal(6) is pressed against the sealing surface without
scuffing. The arrangement of ball pairs ensures an increase of the sealing force with vacuum on either side of the gate.
During opening the movement proceed in the reverse order.
4162357
1 valve gate
2 counter plate
3 leaf spring
4 ball pairs
5 detents
6 gate seal
7 spring stop
valve seat
side

Installation, Operating & Maintenance Instructions
Series 19.0, DN 900mm (36”)
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [e-mail] www.vatvalve.com 284928EA
2009-03-11-11-29
10/16
3.2 Actuator with shaft feed through
The valve is actuated by a pneumatic cylinder. The shaft of the cylinder moves out of the pneumtic area into the vacuum
area in two steps. The first step is a seal between the pneumatic area towards the athmosphere pressure. The second
step is between the athmosphere pressure and the vacuum iside of the gate valve.
The advantage of the two step sealing is, that the pressure drop between athmosphere and vacuum is not so high as it
would be if there would be only one step between overpressure and vacuum. Also we avoid the risk of blowing pressure
air inside of the vaccum system in chase that the vacuum seal would be damaged due to process influences.
Between the athmosphere and the vacuum there are two dynamic seals in order to improve the reliability and to ensure
that there is always enough VAT high vacuum grease on the shaft. (fat depot)
V
A
C
U
U
M
5
-
7bar
Atmosphere
pressure approx.
1bar
Step1
Step2