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Installation, Operating & Maintenance Instructions 

Series 244, DN 10 - 50 (I.D.

⅝" - 2") 

Series 245, DN 16 - 50 (I.D. 1" - 2")

 

 

 

 

VAT Vakuumventile AG, CH-9469 Haag, Switzerland 
Tel +41 81 771 61 61   Fax +41 81 771 48 30   [email protected]   www.vatvalve.com 

258343EE

 

2013-09-16 

9/14 

 

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. 
 
 
 

Summary of Contents for 244 Series

Page 1: ...ated on each product as per the label below or similar made in Switzerland Fabrication No patented 24 A Fabrication number Explanation of symbols Read declaration carefully before you start any other...

Page 2: ...ies 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 T...

Page 3: ...into the system 5 2 3 Connections 5 2 3 1 Compressed air connection 5 2 3 2 Electrical connection 6 3 Operation 8 3 1 Normal operation 8 3 2 Operation under increased temperature 8 3 3 Behavior in ca...

Page 4: ...onductance in high vacuum DN 10 3 l s 1 DN 16 5 l s 1 DN 25 14 l s 1 DN 40 45 l s 1 DN 50 80 l s 1 Differential pressure on the plate in opening direction 2 bar in closing direction 5 bar Differential...

Page 5: ...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...

Page 6: ...sion P bar MPa min max 4 0 4 8 0 8 P bar MPa M5 1 8 Position indicator open closed Admissible temperature 80 C standard Position indicator open closed Admissible temperature 120 C option Lo Position i...

Page 7: ...ftung Echappement MV Coil solenoid valve Spule Steuerventil Bobine de l lectrovanne overpressure berdruck surpression P bar MPa min max 4 0 4 8 0 8 P bar MPa M5 1 8 6 5 4 3 2 1 2 1 6 5 3 4 Lg Lo 1 2...

Page 8: ...losed pneumatically 3 2 Operation under increased temperature See 1 1 Technical data 3 3 Behavior in case of compressed air pressure drop Valve closed valve opens Valve open valve remains open 3 4 Beh...

Page 9: ...d 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 compr...

Page 10: ...te assembly Remove 4 screws 60 uniformly and crosswise Attention Loaded spring Withdraw actuator gate assembly carefully from body pneumatic actuator Remove bonnet seal O ring 62 from groove 5 1 2 Rep...

Page 11: ...refully open vice and remove relaxed insert Remove the parts 26 11 26 5 26 4 and 15 1 from plate 15 2 by axially disperse the parts Pick feedthrough O ring 15 3 with a needle and pull it out of groove...

Page 12: ...ww vatvalve com 258343EE 2013 09 16 12 14 5 1 4 Mount actuator plate assembly Check and clean sealing surfaces of bonnet flange and valve seat Put bonnet seal O ring 62 into body Carefully insert actu...

Page 13: ...feedthrough complete 15 1 Feedthrough end piece 15 2 Plate 15 3 Shaft feedthrough O ring 26 Actuator complete 26 2 Piston 26 4 Support bushing 26 5 Spring 26 7 O ring for pneumatic actuator 26 8 O rin...

Page 14: ...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 delive...

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