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IOM - DOUBLE ECCENTRIC BUTTERFLY VALVES

 UNIWAT® VF791

©COMEV

AL

 V

AL

VE SYSTEMS 

Technical Dept. Ref. IOM - DOUBLE ECCENTRIC BUTTERFL

Y V

AL

VES, UNIW

AT® VF791 - Ed.20/07

Comeval V

alve Systems reserves the right to alter any technical data contained in this Manual without prior notice. Regularly updated data on www

.comeval.es

INSTALLATION, OPERATING

AND MAINTENANCE MANUAL

DOUBLE ECCENTRIC BUTTERFLY VALVES

1. GENERAL INFORMATION ON THE MANUAL .............2

2. NOTES ON POSSIBLE DANGERS ................................2

  2.1 Significance of symbols 

 .............................................2

  2.2 Explanatory notes on safety information

 .....................2

3. PRESERVATION, STORAGE, HANDLING AND 

TRANSPORT ......................................................................2

4. DESCRIPTION ................................................................2

 

4.1 General Description / Operating principles

 .................2

  4.2 Area of Application ......................................................2

  4.3 Technical data - remarks ............................................3

  4.4 Marking/nameplate

 .....................................................3

  4.5 CE marking. Intended use acc. to PED

 ......................3

5. INSTALLATION ..............................................................3

  5.1 General remarks on installation ..................................3

  5.2  Assembling additional modules

 ..................................4

  5.3 Requirements at the place of installation ....................4

6. COMMISSIONING & OPERATION .................................4

7. CARE AND MAINTENANCE ..........................................5

8. TROUBLESHOOTING ....................................................6

9. TROUBLESHOOTING TABLE .......................................6

10. DISMANTLING THE VALVE ........................................7

11. GOODS RETURN & DISPOSAL ..................................7

12. WARRANTY / GUARANTEE

........................................7

13. PARTS LIST ..................................................................8

14. ANNEXES .....................................................................8

  14.1  Declaration of Conformity

 .........................................8

  14.2  Data Sheet ................................................................8

Contents

Series UNIWAT® VF791

Summary of Contents for UNIWAT VF791 Series

Page 1: ...anatory notes on safety information 2 3 PRESERVATION STORAGE HANDLING AND TRANSPORT 2 4 DESCRIPTION 2 4 1 General Description Operating principles 2 4 2 Area of Application 2 4 3 Technical data remark...

Page 2: ...epoxy paint protection In order to prevent damage corrosion or rust on the surface avoid ex treme temperatures keep at 5 C to 50 C avoid high environmental humidity or corrosive environment Keep the v...

Page 3: ...marking pointing to the lower pressure side so that the shaft side of the disc will be upstream when the valve is in closed position Recommended installation orientation is with valve shaft horizontal...

Page 4: ...seize compound on the threads Tighten in a crosswise moderate and uniform manner During start up tighten again if leakage is noticed or replace gasket if necessary NOTE Cap screws will be necessary f...

Page 5: ...ON In the event of infrequent use operate the valve as frequently as possible to avoid deposits of dirt and valve blocking Before disassembling the valve note chapters 3 10 12 When using the valve as...

Page 6: ...this Manual 9 TROUBLESHOOTING TABLE Technical support always available through our website www comeval es or your local distributor Page 6 ATTENTION Read the complete Manual before carrying out insta...

Page 7: ...and relevant regulations This warranty also does not cover any damage which occurs during operation under conditions deviating from those laid down by specifications or other agreements Justified comp...

Page 8: ...e 8 N PART 1 Gear box 2 Key 3 Connection 4 Gland 5 O ring 6 O ring 7 Space washer 8 O ring 9 O ring 10 Bushing 11 Uppershaft 12 Cylindric pin 13 Locking screw 14 Disc 15 Locking screw 16 Cylindric pin...

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