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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

10. DISMANTLING THE VALVE

11. GOODS RETURN & DISPOSAL 

- For any returned goods, the issuing company must provide information in written on any hazards and the precaution in 

case of potentially polluting or harmful residues, or any mechanical damage that could present a health, safety or environ

-

mental risk, as enforced by EU Health, Safety and Environment Law, including the Safety Data Sheet of the substances 

identified as potentially hazardous.

- Valves are recyclable and not expected hazard to the environment, with the exception of soft parts (PTFE and rubber 

compounds) that should be disposed separately only by approved procedure, and no incineration is permitted. 

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.

- We guarantee freedom of faults in compliance with state-of-the-art technology and the confirmed application.

- No warranty claims are accepted for any damage caused as the result of incorrect handling or disregard of this Manual, 

Data Sheet 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 complaints will be eliminated by repair carried out by us or by a specialist appointed by us.

- No claims will be accepted beyond the scope of this warranty. The right to replacement delivery is excluded.

- The warranty shall not cover maintenance work.

- Our guarantee coverage does not cover for any commissioning, maintenance or installation of the product or external parts.

- Our guarantee does not cover products proved to have been tampered with or faulted by material wear and tear.

- The Purchaser is responsible for checking that the incoming product is received in good condition and  conforms to the 

ordered specifications. In case of damage caused during transit it is necessary to immediately complain to the carrier within 

24 hours. After this time carriers could not assume the derived costs. In case of any deviation in relation to order specifi

-

cations, please contact us.

Page 7

COMEVAL VALVE SYSTEMS, S.L. y CIA., Soc. Comanditaria

Les Rotes, 15 46540 El Puig

 

(Valencia) España

Phone 

+34 961 479 011 

·

 

Fax 

+34 961 472 799

E-mail 

[email protected] 

-

 www.comeval.es

 

   

ATTENTION!

The following points must be observed:

- Pressureless pipe system.

- Medium must be cool.

- Plant must be drained.

- Note chapter 3 for proper handling and lifting.

- Additionally, in case of toxic, corrosive, flammable or caustic media:

- Purge pipe system carefully.

- Use proper protection equipment to avoid health harm.

- Adopt proper actions to avoid pollution of the environment.

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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