VAT 284 Series Assembly instructions

Installation, Operating & Maintenance Instructions
Series 284, DN 16, 25, 40, 63 (ID 5/8”, 1”, 1½”, 2½”)
Series 285, DN 16, 25, 40, 63 (ID 5/8”, 1”, 1½”, 2½”)
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [e-mail] www.vatvalve.com 268249EF
2011-07-14 1/8
UHV Angle valve
●with manual actuator,
This manual is valid for the valve ordering number(s):
284..
285..
The fabrication number is indicated on each product as per the label
below (or similar):
made in Switzerland
Fabrication No.:
patented
. .
28
4
..
–
....
–
.. . ./.. . .
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 284, DN 16, 25, 40, 63 (ID 5/8”, 1”, 1½”, 2½”)
Series 285, DN 16, 25, 40, 63 (ID 5/8”, 1”, 1½”, 2½”)
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [e-mail] www.vatvalve.com 268249EF
2011-07-14 2/8
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 284, DN 16, 25, 40, 63 (ID 5/8”, 1”, 1½”, 2½”)
Series 285, DN 16, 25, 40, 63 (ID 5/8”, 1”, 1½”, 2½”)
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [e-mail] www.vatvalve.com 268249EF
2011-07-14 3/8
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
3Operation.................................................................................................................................................................. 5
3.1 Normal operation................................................................................................................................................ 5
3.2 Operation under increased temperature............................................................................................................ 5
4Maintenance & repairs.............................................................................................................................................. 6
4.1 Replacement of vacuum seals........................................................................................................................... 6
4.1.1 Dismantling of "actuator/plate assembly"................................................................................................. 6
4.1.2 Replacement of plate seal ....................................................................................................................... 7
4.1.3 Installation of "actuator/gate assembly"................................................................................................... 7
5Drawing..................................................................................................................................................................... 7
6Spare parts ............................................................................................................................................................... 8
7Warranty................................................................................................................................................................... 8

Installation, Operating & Maintenance Instructions
Series 284, DN 16, 25, 40, 63 (ID 5/8”, 1”, 1½”, 2½”)
Series 285, DN 16, 25, 40, 63 (ID 5/8”, 1”, 1½”, 2½”)
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [e-mail] www.vatvalve.com 268249EF
2011-07-14 4/8
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 - body ≤5 .10-10 mbar ls-1
- valve seat ≤1 .10-9 mbar ls-1
Pressure range 1 .10-10 mbar to 5bar, abs
Admissible differential pressure on the plate
in opening direction ≤2bar
in closing direction ≤5bar
Differential pressure at opening ≤1bar in either direction
Admissible temperature: valve body 0 - 150°C
hand wheel 0 - 120°C
Cycles until first service 10’000 (Tmax 80°C; differential pressure max 1bar)
Technical data for valve with specific options according to «product data sheet».
Product data sheet on request.

Installation, Operating & Maintenance Instructions
Series 284, DN 16, 25, 40, 63 (ID 5/8”, 1”, 1½”, 2½”)
Series 285, DN 16, 25, 40, 63 (ID 5/8”, 1”, 1½”, 2½”)
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [e-mail] www.vatvalve.com 268249EF
2011-07-14 5/8
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
16 5/825 6 1 0.8
25 1“ 70 16 3 2.2
40 1½ 100 22 6 4.5
63 2½ 200 45 18 13
A combination of both forces «FA» and «M» is prohibited. Please contact VAT.
3 Operation
3.1 Normal operation
The valve is fully open when the green marking on the spindle is visible.
3.2 Operation under increased temperature
See «1.1 Technical data»
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 284, DN 16, 25, 40, 63 (ID 5/8”, 1”, 1½”, 2½”)
Series 285, DN 16, 25, 40, 63 (ID 5/8”, 1”, 1½”, 2½”)
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [e-mail] www.vatvalve.com 268249EF
2011-07-14 6/8
4 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.
4.1 Replacement of vacuum seals
The item numbers in brackets refer to the drawing on page 7
4.1.1 Dismantling of "actuator/plate assembly"
•Untighten and remove screws (60) uniformly and crosswise
•Carefully withdraw "actuator/plate assembly" from valve body
•Remove bonnet seal (62) from groove

Installation, Operating & Maintenance Instructions
Series 284, DN 16, 25, 40, 63 (ID 5/8”, 1”, 1½”, 2½”)
Series 285, DN 16, 25, 40, 63 (ID 5/8”, 1”, 1½”, 2½”)
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [e-mail] www.vatvalve.com 268249EF
2011-07-14 7/8
4.1.2 Replacement of plate seal
•Pick O-ring (61) with a needle and pull it out of groove
Attention: Do not damage the sealing surface!
•Check condition of sealing surface and clean it with alcohol
•Put new O-ring (61) on gate groove and press it into groove, in crosswise order, at 4 locations
•Press whole O-ring uniformly into groove
4.1.3 Installation of "actuator/gate assembly"
•Check condition of sealing surfaces at bonnet and valve seat and clean sealing surfaces with alcohol
•Put bonnet seal (62) into groove
•Carefully insert "actuator/gate assembly". Do not cant!
•Insert all bonnet screws (60) finger tight. Once all screws are finger tight, tighten each screw
1/8th of a turn in a cross wise action using an appropriate torque wrench / allen key. Repeat
the process until all screws are tight taking care not to exceed the maximum torque of
DN 16 25 40 63
Nm 4 4 10 12
•Perform function and leak test
5 Drawing
1)
1) Please make sure that the bonnet seal is mounted like shown.

Installation, Operating & Maintenance Instructions
Series 284, DN 16, 25, 40, 63 (ID 5/8”, 1”, 1½”, 2½”)
Series 285, DN 16, 25, 40, 63 (ID 5/8”, 1”, 1½”, 2½”)
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [e-mail] www.vatvalve.com 268249EF
2011-07-14 8/8
6 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
15 Bellows feedthrough
26 Manual actuator complete
30 Handle
61 Plate seal (O-ring)
62 Bonnet seal
7 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 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.