Comeval UNIWAT VF791 Series Installation, Operating And Maintenance Manual
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Comeval UNIWAT VF791 Series Installation, Operating And Maintenance Manual

Double eccentric butterfly valves
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INSTALLATION, OPERATING
AND MAINTENANCE MANUAL
DOUBLE ECCENTRIC BUTTERFLY VALVES
2. NOTES ON POSSIBLE DANGERS ................................2
2.1 Significance of symbols .............................................2
TRANSPORT ......................................................................2
4. DESCRIPTION ................................................................2
4.2 Area of Application ......................................................2
4.3 Technical data - remarks ............................................3
4.4 Marking/nameplate .....................................................3
5. INSTALLATION ..............................................................3
5.1 General remarks on installation ..................................3
5.2 Assembling additional modules ..................................4
Series UNIWAT® VF791
Contents
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

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Summary of Contents for Comeval UNIWAT VF791 Series

  • Page 1: Table Of Contents

    INSTALLATION, OPERATING AND MAINTENANCE MANUAL Series UNIWAT® VF791 DOUBLE ECCENTRIC BUTTERFLY VALVES Contents 1. GENERAL INFORMATION ON THE MANUAL .....2 6. COMMISSIONING & OPERATION .........4 2. NOTES ON POSSIBLE DANGERS ........2 7. CARE AND MAINTENANCE ..........5 2.1 Significance of symbols ..........2 8.

  • Page 2: General Information On The Manual

    1. GENERAL INFORMATION ON THE MANUAL - This Manual provides information on safely using the product, being binding for preservation, storage, handling, transport, installation, commissioning, operation, maintenance, repair and disposal, and must be thoroughly observed at any step. - Please contact the supplier or the manufacturer in case of issues which cannot be solved by reference to this Manual. - Any deviation from this Manual and sound engineering practice or modification on the product shall be notified to manu- facturer for advice or approval.

  • Page 3: Area Of Application

    Description Applicable tables acc. to Tab. CE-Marking PED 2014/68/EU Annex II PSmax Max. pressure Manufacturer logo Nominal pressure, max. pressure in bar www.comeval.es Website of manufacturer Min. / max. temperature UNIWAT® Brand BODY Body material VF791RGGE Valve code Disc material DISC (JS1030, CF8M…)

  • Page 4: Assembling Additional Modules

    ATTENTION! - When using the valve as an end seal, the employers’ liability insurance association of the gas and waterworks specifies the use of a safety precaution such as a plug-in disc, blind flange, etc. With a medium jet that freely exists, you must secure the exit area.

  • Page 5: Care And Maintenance

    - Ensure valve surface is in good condition and retouch coating protection when needed. - Check for tightness in valve connections and stem sealing. If leakage in valve connections, retighten flange bolts cros- swise and gradually if necessary until leakage elimination. If leakage persists, correct alignment and centring of the valve should be checked, and surfaces should be thoroughly cleaned.

  • Page 6: Troubleshooting

    Body or flanges misaligned or with too much gap. according to this Manual break Weight not properly supported Working parameters beyond allowable limits Replace by suitable valve Technical support always available through our website www.comeval.es or your local distributor. Page 6...

  • Page 7: Dismantling The Valve

    12. WARRANTY / GUARANTEE - The extent and period of warranty cover are specified in the “General Sales Terms” of COMEVAL VALVE SYSTEMS valid at the time of delivery or, by way of departure, in the contract of sale itself.

  • Page 8: Parts List

    Screw Uppershaft Washer Cylindric pin Body Locking screw Socket screw Disc Socket head bolt Locking screw Spring washer Cylindric pin Screw 14. ANNEXES 14.1 Declaration of Conformity - DC08EN Updated documents on www.comeval.es 14.2 Data Sheet - DS08 Page 8...

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