AVK 869 Series Скачать руководство пользователя страница 8

 

 
Page 8 of 12 
Copyright © AVK Holding A/S, original version, rev. 1, 8-July-2021

 

5.  Health and safety at work 

Make sure all relevant Health and Safety issues and regulations are adhered to prior to and during 
installation or maintenance work carried out on this product. It is the end user's responsibility to 
ensure that safe working practices are followed at all times. 

Whenever  AVK’s  products  are  installed,  operated  or  maintained  the  inherent  dangers  of 
pressurised  liquids  and  gasses  must  be  addressed.  Before  work  on  a  valve  or  other  piping 
component is undertaken, that may involve the release of internal pressure, the valve or line must 
be  fully  isolated,  depressurised  and  drained  prior  to  commencing  the  work.  FAILURE  TO 
COMPLY WITH THIS MAY RESULT IN SEVERE INJURY OR DEATH. 

All workers handling the product must be aware of the weight of the components or assemblies 
to be handled and manipulated during installation and maintenance.  

It  is  essential  that  staff  undertaking  these  operations  are  adequately  trained  and  it  is  the 
responsibility of the end user that only trained and competent staff undertake these duties. 

This manual has been designed to assist, but it cannot replace quality training in the workplace. 
However, the AVK technical staff is always available and ready to answer questions relating to 
specific problems that may not be covered by this manual. 

AVK’s products are designed to be fit for purpose and to a high reliability standard. This provides 
a safe, low risk product when used correctly for the purpose for which it was designed. However, 
this assumes that the equipment is used and maintained in accordance with this manual, and the 
user is advised to study it and to make it available to all staff that may need to refer to it. 

AVK  cannot  be  held  responsible  for  incidents  arising  from  incorrect  installation,  operation  or 
maintenance. The responsibility for this rests wholly with the end user.

 

6.  Receiving and storage 

Unloading  must  be  carried  out  carefully.  The  load  must  be  put  gently  to  the  ground  without 
dropping. Lift only by means of shackles in the flange bolt holes or slings around the body casting. 

If  a  forklift  is  used  it  shall  have  sufficient  capacity  to  lift  the  required  weight  and  have  a  valid 
inspection certificate. 

All  workers  involved  in  the  unloading  shall  be  able  to  perform their functions.  They  shall  wear 
safety boots, safety vest, safety goggles and hard hat. 

All slings used for the lifting shall be of sufficient strength. A record shall document that they have 
been stored under cool, dry conditions away from sunlight and chemical atmosphere, and that 
they still perform according to their marked strength. 

Immediately after unloading the item should be inspected for compliance with specifications and 
damage in shipment. 

Compliance with specification check shall as a minimum comprise size, pressure class, etc. 

Damage in shipment check shall as a minimum comprise: coating, seating and sealing surfaces, 
etc. or accessories or any other evidence of mishandling during shipment. 

Each item should be operated through one complete open-close cycle in the position in which it 
is to be installed. 

Storage shall be under dry, cool conditions, away from direct sunlight and corrosive or otherwise 
chemically active atmosphere. 

Содержание 869 Series

Страница 1: ...alve AVK diaphragm operated control valves for pressure sustaining relief applications automatically maintain a minimum inlet pressure regardless of changes in flow rate or outlet pressure The main control valve is pilot operated capable of precise setting and easy adjustment of wanted inlet pressure sustaining back pressure or hydraulic un loading applications Diaphragm Operated Pressure Sustaini...

Страница 2: ...Page 2 of 12 Copyright AVK Holding A S original version rev 1 8 July 2021 1 AVK series 869 PSV exploded view DN50FB 350RB DIAPHRAGM CONTROL VALVE EXPLODED VIEW ...

Страница 3: ...Page 3 of 12 Copyright AVK Holding A S original version rev 1 8 July 2021 DN350FB 600FB DIAPHRAGM CONTROL VALVE EXPLODED VIEW ...

Страница 4: ...aphragm EPDM 14 Washer Bronze 15 Disc Seal EPDM 16 Seat Stainless Steel 17 O Ring EPDM 18 Ball Valve Stainless Steel 19 Elbow Stainless Steel 20 Nut Stainless Steel 21 Adaptor Stainless Steel 22 Tee Stainless Steel 23 Pilot Stainless Steel 24 Needle Valve Stainless Steel 25 Adaptor Stainless Steel 26 Plug Stainless Steel 27 O Ring EPDM 28 Adaptor Stainless Steel 29 Adaptor Stainless Steel 30 Adapt...

Страница 5: ...less Steel 15 Diaphragm Support Ductile Iron 16 Disc retainer Ductile Iron 17 Regulating Plug Stainless Steel 18 Adaptor Stainless Steel 19 Ball Valve Stainless Steel 20 Elbow Stainless Steel 21 Plug Stainless Steel 22 Gasket EPDM 23 Bolt Stainless Steel 24 Adaptor Stainless Steel 25 Pipe Stainless Steel 26 Needle Valve Stainless Steel 27 PSV Pilot Stainless Steel 28 Adaptor Stainless Steel 29 Ada...

Страница 6: ...peration 7 5 Health and safety at work 8 6 Receiving and storage 8 7 Installation and commissioning 9 7 1 Installation 9 7 2 Commissioning 10 7 2 1 Commissioning of the PSV 10 8 Application hazards 10 9 Operation and Maintenance 11 9 1 Operation 11 9 2 Maintenance 11 9 3 Repair of valve 11 9 3 1 Replace the pilot valve 11 9 3 2 Replace the filter 11 10 Trouble shooting 12 11 Recommended spare part...

Страница 7: ... The main control valve is pilot operated capable of precise setting and easy adjustment of wanted inlet pressure sustaining back pressure or hydraulic un loading applications Description Condition Upstream Pressure 𝑃1 within area A 𝑃1 𝐴 Valve outlet Pressure 𝑃2 within area B 𝑃2 𝐵 Control Chamber Pressure 𝑃3 within area C 𝑃3 𝐶 Spring Force of main valve 𝐹spring Opening Operation 𝑃1 𝐴 𝑃2 𝐵 𝑃3 𝐶 𝐹sp...

Страница 8: ...or which it was designed However this assumes that the equipment is used and maintained in accordance with this manual and the user is advised to study it and to make it available to all staff that may need to refer to it AVK cannot be held responsible for incidents arising from incorrect installation operation or maintenance The responsibility for this rests wholly with the end user 6 Receiving a...

Страница 9: ...s the disc hinge pins must be horizontal This is achieved when the valve is installed with the top stopper cover uppermost Check the mating flange facings both valve and pipe work flanges for correct gasket contact face surface finish and condition If a condition is found which might cause leakage do not attempt to assemble until the condition has been corrected Check the gasket material For flang...

Страница 10: ...n anticlockwise until it open fully Open partially system downstream isolation valve E slowly Open ball valve 2 turn slowly clockwise PSV pilot regulator 3 until desired upstream pressure is achieved Push PSV regulator 3 to lock open slowly system downstream isolation valve E until it open fully valve is now set 1 Upstream ball valve 2 Downstream ball valve 3 PSV regulator 4 Needle valve 5 Plug 6 ...

Страница 11: ...ong as the valve operates satisfying If the valve ceases to function the internals can be inspected by disassembling the pilot valve and removal of the bonnet and if necessary the valve should be removed from the line WARNING Prior to any maintenance work that requires disassembly make sure that the pressurized line involved is isolated depressurized and drained before starting any disassembly Fai...

Страница 12: ...t is AVK policy therefore to use only materials of the highest quality manufactured to our own designs and thoroughly checked and tested in accordance with our internal Quality Assurance system that is approved to ISO 9001 2000 It is absolutely essential therefore that in order to guarantee the highest level of safety and performance only genuine AVK spare parts are used AVK can accept no responsi...

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