VAT 08 Series Istruzioni per il montaggio

Installation, Operating, and Maintenance Instructions

Series 08, DN 63 - 100 (2½" - 4")

VAT Vakuumventile AG, CH-9469 Haag, Switzerland

Tel +41 81 771 61 61 Fax +41 81 771 48 30 [email protected] www.vatvalve.com

222687EC

2003-04-14

1/8

Insertable Gate Valve

with pneumatic actuator

This manual is valid for the valve ordering numbers:

08036-FA14/24/34/44

08038-FA14/24/34/44

08040-FA14/24/34/44

The respective product identification is given on each valve in the following way

(or similar):

made in Switzerland

Fabrication No.:

patented

F08 –. . . . . / . .

08 . . . – . . . . – . . . .

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, and Maintenance Instructions

Series 08, DN 63 - 100 (2½" - 4")

VAT Vakuumventile AG, CH-9469 Haag, Switzerland

Tel +41 81 771 61 61 Fax +41 81 771 48 30 [email protected] www.vatvalve.com

222687EC

2003-04-14

2/8

Imprint:

Manufacturer

VAT Vakuumventile AG, CH-9469 Haag, Switzerland

Website

www.vatvalve.com

Phone

+41 81 771 61 61

Fax

+41 81 771 48 30

[email protected]

Publisher

VAT Vakuumventile AG, CH-9469 Haag, Switzerland

Editor

VAT Vakuumventile AG, CH-9469 Haag, Switzerland

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, and Maintenance Instructions

Series 08, DN 63 - 100 (2½" - 4")

VAT Vakuumventile AG, CH-9469 Haag, Switzerland

Tel +41 81 771 61 61 Fax +41 81 771 48 30 [email protected] www.vatvalve.com

222687EC

2003-04-14

3/8

Technical data

Pressure range 1 x 10-7 mbar to 1,6 bar (abs),

Differential pressure on the valve gate 1,6 bar in either direction

Differential pressure at opening 30 mbar

Admissible temperature: Valve 150°C

Pneumatic actuator 50°C

Position indicator 80°C

Solenoid 50°C

Position indicator: Contact rating 5 A / 250 V AC, 3 A / 50 V DC

Solenoid see tag on solenoid

Further data according to VAT catalogue «Vacuum Valves 2000».

Installation, Operating, and Maintenance Instructions

Series 08, DN 63 - 100 (2½" - 4")

VAT Vakuumventile AG, CH-9469 Haag, Switzerland

Tel +41 81 771 61 61 Fax +41 81 771 48 30 [email protected] www.vatvalve.com

222687EC

2003-04-14

4/8

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.

Due to the design (very slim) and the mounting possibility (installation between two flanges) no forces other than the screw

forces at the flanges may affect the valve.

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 to the connection (internal thread R 1/8“, 1/8“ NPT for USA)

Compressed air pressure (min. - max. overpressure): 4 - 7 bar / 55 - 95 psig

Use only clean, dry or slightly oiled air!

Installation, Operating, and Maintenance Instructions

Series 08, DN 63 - 100 (2½" - 4")

VAT Vakuumventile AG, CH-9469 Haag, Switzerland

Tel +41 81 771 61 61 Fax +41 81 771 48 30 [email protected] www.vatvalve.com

222687EC

2003-04-14

5/8

Electrical 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! Sockets for position indicator and

solenoid are supplied with the valve.

Wire solenoid and position indicator according to the following diagrams:

Standard solenoid

Solenoid for impulse actuation (option)

power

open

power

MV = coil of solenoid

Minimum pulse duration 50 ms

Continuous voltage does not damage the coil

Standard position indicator

NC/2

C/1

NO/3/4

C/1

NC/2

Prepare cable:

Connect cable:

max. 6.5 mm

(¼'')

tin-plated

a) Slide upper part on

cable

b) Join strands by

soldering

c) Slide upper part on

lower part and tighten

cable clamp

d) Screw upper part

together with lower

part on actuator

Lo = position indicator «open»

Lg = position indicator «closed»

Power failure

Standard solenoid: Valve closes

Solenoid for impulse actuation (option): Valve position does not change, but a started movement will be completed.

Installation, Operating, and Maintenance Instructions

Series 08, DN 63 - 100 (2½" - 4")

VAT Vakuumventile AG, CH-9469 Haag, Switzerland

Tel +41 81 771 61 61 Fax +41 81 771 48 30 [email protected] www.vatvalve.com

222687EC

2003-04-14

6/8

Emergency operation at power failure

In case of a power failure, the valve can be actuated according to the following instructions, provided that there is

compressed air available.

Standard solenoid

Solenoid for impulse actuation (option)

Emergency operation

(slotted screw)

Emergency operation

(slotted screw)

Coil «open»

Coil «closed»

To open the valve:

Turn clockwise

To close the valve:

Turn counter-clockwise

Attention!

Remote operation is only possible if the emergency

operation (slotted screw) is turned counter-clockwise to

its stop.

To open the valve:

Turn slotted screw of solenoid/coil «OPEN» counter-

clockwise to its stop. As soon as valve is open, turn

slotted screw back to its original position.

To close the valve:

Turn slotted screw of solenoid/coil «CLOSED»

counter-clockwise to its stop. As soon as valve is

closed, turn slotted screw back to its original position.

Attention!

Remote operation is only possible of both emergency

operations (slotted screws «OPEN» and «CLOSED»)

are turned clockwise to their stop (initial position).

Compressed air failure

Valve closed: valve remains closed

Valve open: valve position is undefined

Installation, Operating, and Maintenance Instructions

Series 08, DN 63 - 100 (2½" - 4")

VAT Vakuumventile AG, CH-9469 Haag, Switzerland

Tel +41 81 771 61 61 Fax +41 81 771 48 30 [email protected] www.vatvalve.com

222687EC

2003-04-14

7/8

Trouble shooting

Valve does not close/open: Power available?

Compressed air available?

Emergency operation in neutral position?

Solenoid defective?

Check voltage!

Check air pressure!

Leak at gate: Clean valve seat and gate seal!

Replace gate seal, if damaged!

Correct air pressure?

Leak at body: Flanges leaktight?

Replace bonnet seal!

Screws at bonnet tightened?

Repairs

Contact VAT for repairs or maintenance. The fabrication No. (F08- . . . . . / . . . . ) marked on the valve body has always to

be specified. It has to be individually decided whether the work can be performed by the customer or has to be carried out

by VAT.

All supplies (e. g. compressed air, electrical power) have to be disconnected for removal/installation of the valve from/into

the system.

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 for repair have to be free of harmful substances such as e.g. toxical, caustic or microbiological

ones. For radioactively contaminated products the customer has to fill in the VAT form «Contamination and Radiation

Report» and to send it with the product. The form is available at VAT. The maximum permissible values indicated in the

form must not be exceeded.

Installation, Operating, and Maintenance Instructions

Series 08, DN 63 - 100 (2½" - 4")

VAT Vakuumventile AG, CH-9469 Haag, Switzerland

Tel +41 81 771 61 61 Fax +41 81 771 48 30 [email protected] www.vatvalve.com

222687EC

2003-04-14

8/8

Maintenance

Replacement of gate seal

The figures in brackets refer to the drawing on page 10

1. Vent chambers on either side of valve

2. Open valve

3. Switch off compressed air

4. Switch off electrical power

5. Disconnect compressed air line

6. Remove position indicators (6) (they may be connected to the connecting cable)

7. Remove valve from installation

8. Put valve on a clean place

9. Remove compressed air connection (7)

10. Unclamp snap ring (9) on body side and simultaneously withdraw cylinder tube (8) with attached solenoid and cylinder

cover (10) carefully from bushing (11) and piston (12)

Attention: If the piston is pulled to the open position during withdrawal of the cylinder tube, it has to be pushed back

so that the valve gate (2) is in the closed, but not locked position!

11. Loosen countersunk screw (13) in thread ring (4)

12. Unscrew thread ring (4) from body (1)

Attention: Before removing the thread ring mark its position exactly!

13. Remove screw (14)

14. Hold counter-plate (3) at the bore hole by means of a screwdriver

15. Turn piston (12) clockwise by approx. 45° and pull it slowly backwards

16. Drop out balls (15) from bore hole in counter-plate (3)

Attention: Pull out piston to max. stroke "B"!

DN 63 max. stroke "B" 81.5

DN 80 98.5

DN 100 118.5

17. Withdraw mechanism (counter-plate with attached gate) from body

18. Remove O-ring (5) carefully from gate groove

Attention: Be careful not to damage O-ring groove!

19. Check seat surface in body. Remove scratches by polishing concentricly with abrasive cloth grain 220, and clean seat

surface with alcohol using a lint-free cloth.

20. Clean O-ring groove with alcohol using a lint-free cloth

21. Press new O-ring with the thumb crosswise into groove

Attention: Be careful not to twist O-ring!

22. Put mechanism (counter-plate with attached gate) into body and hold it

23. Push shaft (18) carefully forward between valve gate and counter-plate

24. Press balls (15) through bore hole in counter-plate into bore holes of shaft (one ball pair after the other) while pushing

shaft progressively forward

25. After all balls have been inserted, continue pushing the shaft until the balls enter the detents of the valve gate and

counter-plate

26. Mount screw (14)

27. Screw thread ring (4) into body (1), exactly to the marked position

28. Tighten countersunk screw (13) in thread ring (4)

29. Align valve gate (2) parallel to sealing surface in body

30. Slide cylinder tube (8) carefully over piston (12) and bushing (11)

Attention: Avoid twisting!

Installation, Operating, and Maintenance Instructions

Series 08, DN 63 - 100 (2½" - 4")

VAT Vakuumventile AG, CH-9469 Haag, Switzerland

Tel +41 81 771 61 61 Fax +41 81 771 48 30 [email protected] www.vatvalve.com

222687EC

2003-04-14

9/8

31. Mount snap ring (9) and check whether it is placed properly in groove

32. Attach compressed air connection (7)

33. Close valve

34. Perform function and leak test

35. Mount valve into system

36. Attach position indicators

37. Connect electrical power

38. Connect compressed air

39. Perform function and leak test

Valve is ready for operation

Installation, Operating, and Maintenance Instructions

Series 08, DN 63 - 100 (2½" - 4")

VAT Vakuumventile AG, CH-9469 Haag, Switzerland

Tel +41 81 771 61 61 Fax +41 81 771 48 30 [email protected] www.vatvalve.com

222687EC

2003-04-14

10/8

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