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OPERATION AND MAINTENANCE MANUAL 

01-2016 

 

 
 

Operation and Maintenance Manual 

 

 

 

RETURN BUTTERFLY VALVES 

 

DOUBLE ECCENTRIC 

 

Cat. no. 

4499 

 
 
 
 
 
 
 
 
 
 
 
 
 

 

 

Approved for use by 

 

JAFAR S.A. Factory President 

 
 

Failure  to  comply  with  the  guidelines  and  instructions  in  this  Operation  and 

Maintenance  Manual  exempts  the  manufacturer  from  all  obligations,  liabilities  and 
guarantees. 
Due  to  the  continuous  development  of  our  business,  we  reserve  the  right  to  introduce 
modifications and structural changes to the product presented herein. 
 

Summary of Contents for 4499

Page 1: ...AFAR S A Factory President Failure to comply with the guidelines and instructions in this Operation and Maintenance Manual exempts the manufacturer from all obligations liabilities and guarantees Due...

Page 2: ...ING DESIGN DESCRIPTION 6 2 2 MATERIALS 6 2 3 DIMENSIONS 7 2 4 STANDARDISATION 7 2 5 ORDERING REGULATIONS 8 2 6 MANUFACTURE AND ACCEPTANCE 8 2 7 MARKINGS 8 3 PROTECTION STORAGE TRANSPORT 9 3 1 PROTECTI...

Page 3: ...pipelines Return butterfly valves can be manufactured in different material versions and used in water networks technological installations petrochemical industry municipal management sewage treatment...

Page 4: ...ic impact load is to be found in Table 2 Table 2 Dnom 250 300 350 400 500 600 700 800 Hydraulic load Mg for PN16 8 11 15 20 31 45 50 55 A properly mounted butterfly valve should work automatically Che...

Page 5: ...weight acc to Fig 2 and table 3 Fig 3 For DN 250 800 75 for DN 300 600 78 Tab 3 Outer dimensions Weight of the butterfly valve with its counterweight Dnom B C C E I II III 4499 4499 3 4499 4499 3 4499...

Page 6: ...item 5 The butterfly valve shaft is mounted on rotary bearings in bearing shells For the purpose of ensuring tightness of the body at the point where the shaft moves through the bearing shells sealin...

Page 7: ...074 2 2002 Pipeline fittings Functional requirements and verification tests Isolating valves PN 89 H 02650 Fittings and pipelines Pressures and temperatures PN EN 1092 2 1999 Flanges and their connect...

Page 8: ...RING REGULATIONS Water supply system fittings are specific purpose industrial fittings therefore orders must include catalogue number purpose e g for water supply systems furthermore nominal diameter...

Page 9: ...ld be stored indoors 3 4 TRANSPORT Butterfly valves must be transported by covered means of transport Prior to transport butterfly valves are secured against weather conditions with a protective coat...

Page 10: ...iently long bolts connecting two neighbouring pipeline flanges The value of the torque to be applied to the bolt nut is specified in PN 63 M 82056 Note If the product is damaged mechanically do not in...

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