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AVK 715 Series, Инструкция по установке, эксплуатации и обслуживанию, Страница: 1 / 12

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Copyright © AVK Holding A/S, original version, rev. 2, 30-Oct-2019

 

Installation, Operation and Maintenance Manual -
Original Version 

 

AVK Series 715, Pneumatic Actuated Gate Valve, DN 65-400 

 
AVK 715 is a series of ductile iron, resilient seat gate valves operated by a pneumatic 
actuator. They are designed for applications in clean water, waste water or sewage. 
Face to face values are according to EN 558, series 3 (BS), 14 and 15. 
 
 

 

 

Содержание 715 Series

Страница 1: ... Manual Original Version AVK Series 715 Pneumatic Actuated Gate Valve DN 65 400 AVK 715 is a series of ductile iron resilient seat gate valves operated by a pneumatic actuator They are designed for applications in clean water waste water or sewage Face to face values are according to EN 558 series 3 BS 14 and 15 ...

Страница 2: ...Page 2 of 12 Copyright AVK Holding A S original version rev 2 30 Oct 2019 1 AVK series 715 exploded view ...

Страница 3: ...t Ductile iron GJS 500 7 13 Bonnet bolt Stainless steel A2 70 14 O ring NBR 15 Nut stuffing box gland flange Stainless steel 16 Washer Stainless steel 17 Nut actuator stuffing box Stainless steel 18 Washer Stainless steel 19 Gland flange Ductile iron GJS 500 7 20 Gasket NBR 21 Bolt gland flange bonnet Stainless steel 22 Wiper ring NBR 23 Shaft seal NBR 24 Spacer ring in shaft seal PE 25 Stuffing b...

Страница 4: ... 5 6 Receiving and storage 5 6 1 Unloading 5 6 2 Inspection and storage 6 7 Installation and commissioning 6 7 1 Installation 6 7 2 Pneumatic actuator cylinder 7 7 3 Pressure test 7 8 Application hazards 7 9 Operation and maintenance 7 9 1 Operation 8 9 2 Maintenance 8 9 3 Replace stuffing box shaft seal 8 9 4 Replace Festo actuator piston seal and O rings 9 10 Decommissioning 9 11 Trouble shootin...

Страница 5: ...hese 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 correctl...

Страница 6: ...otherwise chemically active atmosphere 7 Installation and commissioning WARNING Prior to installation make sure that all pressurized lines involved in the installation are isolated depressurized and drained before starting any work Failure to do so may result in sudden pressure release and subsequent severe injury or death 7 1 Installation There is no preferred flow direction but the stem must not...

Страница 7: ...e cylinder It is powered by 24 VDC Fig 3 position indicator wiring diagram 7 3 Pressure test After installation perform a pressure test on the piping system The valve is designed to resist a test pressure of 1 5 x PN 8 Application hazards Do not install closer than 5 pipe diameters from tees bends or other irregularities in the piping system as these can cause disturbing turbulence that can damage...

Страница 8: ...crew the bonnet bolts and lift off the complete bonnet assembly including wedge and actuator 3 Unscrew the stem adaptor set screw 9 and unscrew the wedge to stem adapter from the actuator rod 28 4 Unscrew the four nuts 17 holding the actuator and separate the actuator from the bonnet assembly 5 Unscrew the two bolts 26 holding the stuffing box 6 Press the old seal rings out of the stuffing box wit...

Страница 9: ...tor from electrical and air supply 3 Remove the four socket head bolts holding the endcap to the cylinder 4 Lift off the cylinder carefully and in a straight line until it is free of the piston 5 Replace O rings and seals 6 Apply fresh grease to seals and O rings 7 Install the cylinder over the piston and end cap 8 Apply locking agent to the threads before fitting the bolts 10 Decommissioning When...

Страница 10: ...Valve does not operate Cause Actuator air supply missing or inadequate Cure Check and re establish air supply adjust air pressure to 6 8 bar Symptom Valve does not operate Cause Actuator seals worn or cracked Cure Replace seals and O rings Symptom Actuator stuck Cause Poor quality of compressed air Cure Clean solenoid valve and actuator Install air filters and check the air quality to be acc to IS...

Страница 11: ...cted malfunction following spare parts can be kept in stock 1 One set of stuffing box seals ref chapter 9 3 fig 4 consisting of three lip seals 19 a spacer ring 20 a wiper ring 18 a flat gasket 17 and an O ring 25 Ref nos are DN 65 150 715 150 12000 DN 200 715 200 12000 DN 250 300 715 300 12000 2 One set of seals and O rings for the Festo actuator cylinder a DN 65 125 ref no 715 100 15000 DPS 125 ...

Страница 12: ... 5 1 2 O ring 194x4 2 3 Lip seal 200x180x14 2 4 Guide ring 200 1 5 O ring 25x2 5 1 6 Grease 2 7 Thread lock 1 d DN 250 300 ref no 715 300 15000 DPS 320 Item Designation Qty 1 Rod seal 40x50x11 5 1 2 O ring 12x2 5 2 3 O ring 10x1 4 4 O ring 250x4 5 2 5 O ring 32x2 5 1 6 O ring 37x2 5 1 7 Lipseal 320x295x19 2 8 Guideband 320 1 9 Grease 2 10 Thread lock 1 ...

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