Gefa HG1 Original Instructions Manual Download Page 11

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HG1

3.5 Components high performance butterfly valve series HG

Pos.

Description

1.1

Body

1.2

Disc with stem

1.2.1

Disc

1.2.2

Stem

1.2.3

Straight pin

1.2.4

Tapered pin (≤ DN300)

1.3

Seat

1.4

Insert ring

1.5

Set screw / Cylinder screw

1.6

Bearing

1.7

Gland packing

1.7.1

Gland packing

1.7.2

Gland packing

1.8

Stopfbuchse

1.9

Gland

1.10

Hexagon screw

1.11

Hexagon nut

1.12

Limit stop

1.13

Set screw

1.14

Bottom flange

1.15

Axial securing device

1.16

Bottom flange seal

1.17

O-ring

1.18

Hexagon screw

1.19

Sealing tape (optional)

1.20

Sealing tape (optional)

1.30

O-ring (optional)

1.31

O-ring (optional)

1.32

O-ring (optional)

(See illustrations in this chapter)

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Version 0 • Dokument-Nr. 74572811

Internet: www.gefa.com • E-Mail: [email protected]

Summary of Contents for HG1

Page 1: ...HG1 ARMATURENTECHNIK Original instructions Germaniastraße 28 D 44379 Dortmund Tel 49 0 231 61 00 9 0 Fax 49 0 231 61 00 9 80 Internet www gefa com E Mail gefa gefa com Version 0 Dokument Nr 74572811 ...

Page 2: ...ponents high performance butterfly valve series HG 10 4 Transport and storage 12 5 Mounting and initial operation 13 5 1 Installation conditions 13 5 2 Installation position 14 5 3 Initial operation 15 5 4 Mounting instructions 15 5 5 Impermissible operation 17 6 Operation 18 7 Maintenance and repair 19 7 1 Maintenance 19 7 2 Tighten Replacing the Gland Packing 19 7 3 Replacing the Seat 19 8 Decom...

Page 3: ...erating instructions must be available to all users at all times GEFA Processtechnik GmbH is not liable for unauthorized changes of the device or for improper use All rights reserved GEFA Processtechnik GmbH GEFA Processtechnik GmbH Germaniastraße 28 44379 Dortmund Germany Tel 49 0 231 61009 0 Fax 49 0 231 61009 80 E Mail gefa gefa com 3 26 Version 0 Dokument Nr 74572811 Internet www gefa com E Ma...

Page 4: ... Nature and origin of danger Possible consequences of the danger Measures to avoid the danger Signal words for warnings The signal word identifies the severity of the hazard that occurs if it is not avoided DANGER means Serious personal injury threatens immediately WARNING means Serious personal injury may be imminent CAUTION means Light medium personal injury threatens immediately NOTICE means pr...

Page 5: ...ation are those who are authorized to assemble commission and mark devices systems and connections in accordance with the standards of safety technology 2 4 Improper use Do not mount the valve if Parts are obviously damaged There is not enough free space to ensure easy operation of the hand levers handwheels and manual emer gency shifts or the fitting as Support member of the pipe guide is used Ri...

Page 6: ... the operator It is not permissible to reach into the valve at any time In general there is a risk of injury to moving parts 2 8 Outflowing media WARNING Outflowing media If harmful or environmentally hazardous media leak out e g leaks or disassembly of the valve they must be collected in such a way that there are no hazards to persons or the environment Ob serve all applicable local regulations t...

Page 7: ...HG1 3 Scope of delivery 3 1 Exploded view DN50 300 The description of the components can be found at the end of the chapter 7 26 Version 0 Dokument Nr 74572811 Internet www gefa com E Mail gefa gefa com ...

Page 8: ...HG1 8 26 Version 0 Dokument Nr 74572811 Internet www gefa com E Mail gefa gefa com 3 2 Exploded view DN350 500 The description of the components can be found at the end of the chapter ...

Page 9: ...HG1 3 3 Exploded view DN600 The description of the components can be found at the end of the chapter 9 26 Version 0 Dokument Nr 74572811 Internet www gefa com E Mail gefa gefa com ...

Page 10: ...72811 Internet www gefa com E Mail gefa gefa com 3 4 Bearing protection and vacuum seal DN50 600 DN50 600 optional Vacuum seal Bearing protection Bearing protection The description of the components can be found at the end of the chapter ...

Page 11: ...1 Gland packing 1 7 2 Gland packing 1 8 Stopfbuchse 1 9 Gland 1 10 Hexagon screw 1 11 Hexagon nut 1 12 Limit stop 1 13 Set screw 1 14 Bottom flange 1 15 Axial securing device 1 16 Bottom flange seal 1 17 O ring 1 18 Hexagon screw 1 19 Sealing tape optional 1 20 Sealing tape optional 1 30 O ring optional 1 31 O ring optional 1 32 O ring optional See illustrations in this chapter 11 26 Version 0 Dok...

Page 12: ...ge otherwise the faulty spots must be repaired immediately The factory adjusted basic setting position of the disc at delivery must not be changed The transport packaging protects the valve against soiling and damage therefore it is important do not remove the packaging until the valve is going to be installed To prevent damage and life threatening injuries when transporting the valve Impact and v...

Page 13: ...tic device and used in potentially explosive zones the body of the valve must be connected effectively at site with the potential compensation cable before the valve is put into operation NOTICE Avoid vibration Vibrations water hammer and cavitation as well as abrasive media components lead to damage to the valve and impair the service life NOTICE Installation at high suspended matter concentratio...

Page 14: ...hear and bending stresses cannot act on the valve body The surfaces of the pipeline flanges between which the valve is installed have to be parallel to one another the sealing surfaces must be clean and without damage No cross marks may be visible Flanges and pipes must not be completely welded when the valve is installed as the valve can be dam aged The valve is installed with two suitable seals ...

Page 15: ...t the contact surfaces of the valve Pay attention to any reactions with the operating medium Before installing the valve flush the pipeline and remove any general impurities welding residues etc Remove the transport packaging shortly before fitting the valve to avoid damage during transport Before putting the valve into operation check that all necessary connections e g compressed air connections ...

Page 16: ...pending on the mounting position to insert the lower flange screws without tightening them The screw is not to be initially inserted in the centring aid area rib Insert the high performance valve and the seals between the flanges Insert the flange screws Remove the spreader and hand tighten the screws Check whether the valve the seals and the counter flanges are in true alignment Carefully open an...

Page 17: ...he pressure and temperature range specified on the valve or specified in the technical data PS TS the corresponding pressure temperature range diagram can be found in chapter technical data un der pressure temperature range diagram Avoid all foreign particles on the sealing surfaces Do not operate the valve in the cavitation area The throttling and control range in an intermediate position with an...

Page 18: ...y precautions listed below must be taken a Make sure that the pipe section into which the valve has been integrated is depressurised and drained b Let the valve and the flow medium cool down If dangerous substances have flowed through the relevant pipe section it must be additionally rinsed and aerated c Remove attached actuators before removing the valve or secure them against unauthorized use an...

Page 19: ...ation of the valve is not necessary 7 2 Tighten Replacing the Gland Packing Should a leakage occur at the gland packing retighten the gland nut 1 11 Take care that the gland nut is not Normally the leakage can be stopped by simply turning the nut by a quarter If the leakage cannot be stopped using the above method the gland packing must be replaced For replacing the gland packing the valve needs n...

Page 20: ...to the insert ring and then place the insert ring with the seat on the body For double seated rings e g firesafe version place the metallic ring on the body place the non metallic seat in the insert ring and then place the insert ring with the non metal lic seat on the metallic Screw in setscrews 1 5 only until the insert ring can be moved but can not be pushed out Close the valve disc to center t...

Page 21: ... the valve at least all safety precautions listed here must be taken Before removing the high performance butterfly valve make sure that the pipe section is depressurised and evacuated In case of toxic caustic and other outgasing media the pipe section must also be ventilated Actuators either have to be dismounted before the valve is removed or they have to be secured against un authorized or unin...

Page 22: ...ne is depressurised and exhausted c Check if pneumatic and hydraulic operating controls are depressurised d Check the piping system and the pneumatic or hydraulic operating controls for residual energy e g pressure pad e Automatic or remotely operated valves are to be decoupled from the automatic mode or the re mote control for the duration of the maintenance and repair work f Work on parts in con...

Page 23: ...closing process Check and if necessary reset the stroke limits on the actuator Electrically operated valve Open the valve slightly and repeat the closing process Check and if necessary reset the limit switches Trapped parts between the valve disc and seat ring Open the valve fully and remove any jammed parts Contamination on the valve disc or seat ring Open the valve fully and flush the pipeline O...

Page 24: ...d the product must be returned to the manufacturer In this case the valve must be completely cleaned to prevent any injuries or health hazards due to residues of the flow media When returning the product to the manufacturer enclose the safety data sheet of the media Furthermore if ne cessary it must be stated which safety measures have to be observed when handling the returned product ...

Page 25: ...sition must be exactly adjusted The stop boss does not serve the purpose of a limit stop but merely as an override safety device which ensures that the seat ring is not damaged The highest level of tightness of the valve is achieved ca 1 2 before the stop boss is reached If the valve is not installed in the pipeline the exact stop position can be checked as fol lows The distance from the edge of t...

Page 26: ...rew with a nut 3 6 Screw the star knob 3 3 onto the stud bolt For operating the valve loosen the star knob and retighten after wards 10 1 2 Mounting of the MULTITOP mounting plate Follow the instructions below when assembling the MULTITOP mounting plate Place the mounting plate 2 1 on the body Insert the spring dowel sleeves 2 2 through the mounting plate into the body The slit in the split taper ...

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