AVK 57/46 Series Installation, Operation & Maintenance Manual Download Page 2

AVK SEriES 57/46 & 57/86 rESiliEnt SEAtEd gAtE VAlVES

inStAllAtion, opErAtion & mAintEnAncE mAnuAl

 

1.  introduction

AVK series 57/46 gate valves are available in DN50 to DN300. The valve has a full and straight bore corresponding to the 
nominal diameter and can be installed independent of the flow direction. To keep the advantage of the full and straight bore 
vertical installation is recommended, however, flow/pressure limitations outlined below should be observed.

The valves are 100% factory tested hydrostatically.

it iS importAnt to StAtE opErAting tEmpErAturE, prESSurE, mEdium And opErAting conditionS WitH 
EnQuiriES/ordErS, So tHE moSt SuitABlE VAlVE Will BE SuppliEd For Your SpEciFic purpoSE.

AVK Valves Pty Ltd, 559A Grand Junction Road, Wingfield, SA 5013, Australia - T: +61 8 8368 0900 - E: [email protected] - W: www.avkcivil.com.au   

 

      Version number 3

COPYRIGHT©AVK GROUP A/S 2017

                                                                                       pp. 1 of 6 

AVK Valves Pty Ltd, 559A Grand Junction Road, Wingfield, SA 5013, Australia - T: +61 8 8368 0900 - E: [email protected] - W: www.avkcivil.com.au                                 Version number 3

COPYRIGHT©AVK GROUP A/S 2017 

                                                                                      pp. 2 of 6 

materials:

castings (gland flange, body, bonnet & stem cap)

Ductile Iron, 500-7 to AS 1831

coating

Fusion bonded epoxy (FBE)

Stem, gland flange bolts

Stainless Steel

Wedge

Ductile Iron, with EPDM rubber

Bonnet bolts

DN50-250

PN16 Grade 8.8, PN25 Grade 12.9,  sealed with hot melt 
DN300-400

PN16 and PN25 Grade 12.9, sealed with hot melt

Refer to individual datasheets for specific information

                PN16

Summary of Contents for 57/46 Series

Page 1: ...ained it is essential that the staff that undertake these operations be adequately trained The hazards of pressurised liquids and gases can be severe and it is the responsibility of the users to ensure that trained competent staff undertake these duties This manual has been designed to assist but it can never fully replace quality training in the workplace AVK technical staff will always be availa...

Page 2: ...TE OPERATING TEMPERATURE PRESSURE MEDIUM AND OPERATING CONDITIONS WITH ENQUIRIES ORDERS SO THE MOST SUITABLE VALVE WILL BE SUPPLIED FOR YOUR SPECIFIC PURPOSE AVK Valves Pty Ltd 559A Grand Junction Road Wingfield SA 5013 Australia T 61 8 8368 0900 E enquiries avkau com au W www avkcivil com au Version number 3 COPYRIGHT AVK GROUP A S 2017 pp 2 of 6 Materials Castings gland flange body bonnet stem c...

Page 3: ...nnet 10 Hot melt 11 Gland bushing 12 O ring 13 O ring 14 Washer 15 Gland 16 Hexagon nut 17 Gland follower 18 Yoke 19 Stud bolt 20 Washer 21 Handwheel 22 Stem nut 21 20 19 18 17 16 15 13 12 11 10 9 8 7 6 5 4 3 2 1 14 22 AVK Valves Pty Ltd 559A Grand Junction Road Wingfield SA 5013 Australia T 61 8 8368 0900 E enquiries avkau com au W www avkcivil com au Version number 3 COPYRIGHT AVK GROUP A S 2017...

Page 4: ...o pressurisation check gland follower nuts are finger tight After pressurisation operate valve and check for weeping Nip nuts 16 until weeping stops Note If nuts are excessively tightened torque operation of the valve is increased dramatically 3 Operation Series 57 46 valves are suitable for use with clean water or neutral liquids up to 70 C Minimum liquid temperature must be above freezing Insula...

Page 5: ... wedge 3 raised from the seat position f Lift gland follower 17 up and place washer 14 and nut 16 onto studs 19 to secure yoke 18 to bonnet 9 g Tighten nuts 16 that secure yoke 18 to bonnet 9 lower gland follower over studs 19 and place one washer 14 on top of each stud 19 h Place a small amount of Loctite 680 Threadlocker onto the nuts that secure the gland follower 17 i Place nuts onto studs and...

Page 6: ...gn Rotate the splits at approximately 90 degree intervals c Reverse steps a and b for re assembly Repressurise the system At this time if there is a leak around the gland be sure that the upper gland follower yoke nuts are screwed down evenly on the stud bolts Tighten the nuts turn each until the leak stops Component list 1 Valve body 2 Wedge body 3 Wedge 4 Wedge nut 5 Pin 6 Stem 7 Bonnet bolt 8 B...

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