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Edition2 -10/2012

www.vag-group.com 

info@vag-group.com

Summary of Contents for EKN AWWA

Page 1: ...KAT 1321 B Edition2 10 12 Operation and Maintenance Instructions VAG EKN Butterfly Valve Type AWWA...

Page 2: ...e pipeline upstream and down stream of the valve 7 4 2 2 Gear positions 9 4 3 Installation position 10 4 4 Assembly instructions and fittings 11 5 Set up and operation of the valve 11 5 1 Visual inspe...

Page 3: ...nt the emerging fluid from causing damage Care must also be taken when closing the valve to avoid crushing or trapping When a valve needs to be dismantled from a pipeline fluid may emerge from the pip...

Page 4: ...e and therefore may swing sideways when lifted if the stop device is improperly fixed Avoid jerks and jolts when lifting or lowering the load as the forces generated in the process may damage both the...

Page 5: ...flow velocity as well as the ca vitation limits must be observed However in this case VAG will void any warranty issues unless VAG authorized the operating mode in writing The operational limits can b...

Page 6: ...AG EKN Butterfly Valve has the correct dimensions when the computed value lies above the limit curve of k The recom mended control range lies between 10 100 opening degree Below that no reasonable con...

Page 7: ...mic torque and damage the valve 4 2 1 Installations in the pipeline upstream and downstream of the valve Caution If the valve is used in contaminated media a filter with a suita ble mesh size must be...

Page 8: ...plunger valve make sure that there is enough space between them minimum 10 x Valve size Butterfly valves of a nominal diameter of up to 42 can be in stalled vertically with gear facing upwards or down...

Page 9: ...d the drive shaft A Flow on shaft side seat surface on the outlet side gear on the right B Flow on the side away from the shaft seat surface on the inlet side gear on the left C Flow on the side away...

Page 10: ...g up or down in the pipelines In case of valves with larger nominal diameters a special design of the valve must be selected due to the load of the disk Please consult VAG before placing your order Pi...

Page 11: ...tion works near or above the valve not be completed yet the valve must be covered to protect it from dirt 5 Set up and operation of the valve bolted connections have been properly fastened 5 2 Functi...

Page 12: ...perated via the handwheel of the electric multiturn actuator the torque switches do not have any safety function Operation via the emergency handwheel is intended for short peri ods only for commissio...

Page 13: ...k requiring such protective equipment or for which such protective equipment is prescribed Improper or wrong use of the valve should be avoided Prior to the performance of any work on the valve and eq...

Page 14: ...g ring 3 Clean the disk 2 in the sealing zone Check the seat ring in the body for damage or deposits Insert the new sealing ring into the groove of the disk and slight ly grease it with KL BERSYNTH VR...

Page 15: ...reign matter Gear blocked Undo block No electrical connection of electric actuator Establish electrical connection Unfavourable flow and im pairment of movement Change installation position Leaks in t...

Page 16: ...Edition2 10 2012 www vag group com info vag group com...

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