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Flowserve Argus EK 71, Service Manual

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Flowserve Argus EK 71 Service Manual Download Page 15

Argus 

Maintenance 

15 

Type FK/79 

 

 
 

FK79-02-001 

 

 

 

Danger! 

Do not disassemble the valve under pressure. Before disassembly operate valve so that possible 
pressure behind the ball may escape. 

Disassembly 

f

  Stem (22) should be in CLOSED position.  

f

  Remove snap ring (12) and stop ring (7). Unscrew cheese-head screws (8). 

f

  Take off plate (6) with sealing ring (43) and bush (36) on DN 20 and 25 or bearing tape (34) and dowel 

pin on DN 32-50 as well as thrust ring (11) with sealing ring (35). 

∗∗

 

f

  Unscrew hexagonal nuts (4) from body (2). 

f

  Take off body (2), O-ring (37) and sealing ring (33) from body (1). 

f

  Remove ball (21) and sealing rings (31). 

f

  Press stem (22) downwards and take it out of the body together with bush (36) and washer (38). 

f

  Removed O-ring (32) and washer (39) upwards. 

Exchanging the Stem Sealing 

Proceed as per Disassembly until 

(∗∗)

. 

f

  Take off O-ring (32) and exchange bearing ring (39). 

 

When using a PTFE seal instead of O-ring (32), item (39) can be left out. 

 

Depending on the actual requirements, a partial disassembly of the ball valve might be sufficient. 

f

  To reassemble, proceed in reverse order. 

 

  三千控制阀网 

www.cv3000.com

Summary of Contents for Argus EK 71

Page 1: ...Argus Ball valves Experience In Motion Service Manual Types EK 71 EK 74 FK 75 FK 76 FK79 FK 79 F FK 492 HK 35 MW 22 三千控制阀网 www cv3000 com ...

Page 2: ...1 Type FK 75 12 Disassembly 12 Exchanging the Stem Sealing 12 Type FK 76 13 Disassembly 13 Exchanging the Stem Sealing 13 Type FK 78 14 Disassembly 14 Exchanging the Stem Sealing 14 Reassembly 14 Type FK 79 15 Disassembly 15 Exchanging the Stem Sealing 15 Type FK 79 F 16 Disassembly 16 Exchanging the Stem Sealing 16 Type FK 492 17 Disassembly 17 Type HK 35 18 Disassembly 18 Exchanging the Stem Sea...

Page 3: ... must not be exceeded even as individual loads Caution The user is responsible for ensuring compliance with the guidelines regulations safety standards and laws applicable to the use of these ball valves Maintenance Ball valves are maintenance free It is advisable however to actuate them at least once or twice a year Safety Information Information Please read the safety instructions carefully Gene...

Page 4: ...s the position of the wrench must clearly reflect the OPEN position of the ball valve see Chapter Start up Danger Do not disassemble the valve under pressure Before disassembly operate valve so that possible pressure behind the ball may escape see Chapter Maintenance Caution Do not loosen the fixing nuts see Chapter Stuffing Box Assembly Danger The ball valve must be depressurized To release encap...

Page 5: ...NV Bureau Veritas etc carry out further tests on behalf of ARGUS or customers at regular intervals Compliance with Quality Assurance procedures under ISO 9001 was certified by DQS German Society for Quality Assurance Pressure Temperature Diagrams FK76 01 001 0000 01 001 0000 01 002 Delivery Storage Check on Delivery Lieferschein delivery note bordereau de livraison Bestellnummer order number numØr...

Page 6: ...gulations must be complied with for transport to the place of installation Make sure that the valves cannot tilt or slip in any way see figure below 0000 00 002 The user is liable for any damage resulting from incorrect transport 三千控制阀网 www cv3000 com ...

Page 7: ...lve to the pipeline flange with a few bolts f Check that the ball valve and gaskets are correctly located in relation to the pipeline flange f Check the alignment of the ball valve and pipeline Figure 0003 000 003 f Correct any discrepancies f Tighten the bolts crosswise Figure 0005 00 001 Connecting the second Flange f The second flange is installed in the same way as the first flange Figure 0003...

Page 8: ...complied with Figure 0003 00 003 Due to the short length of the welded ends there is a risk that the soft inserts may be destroyed during the welding work Caution Use temperature measuring strips to check that the temperature does not rise beyond the permissible limits 100 C The strips must be fitted to the connection near the soft inserts Figure 0002 00 006 These temperature measurement strips ar...

Page 9: ... rinsing f If necessary retighten the bolts Actuating the Ball Valve Only 2 positions open closed position with 90 C turn are allowed to prevent any damage to the seals Figure 0001 00 001 Ball valves are not control valves Open Position of the Ball Valves The ball valves are open when the flat edges or visible notches on the stem are parallel to the direction of flow Figure 0001 00 002 When using ...

Page 10: ... with sealing ring 35 f Unscrew flange connection 2 with sealing ring 33 and O ring 37 from body 1 using a special ARGUS tool eccentric f Remove ball 21 and sealing rings 31 f Press stem 22 downwards and take it out of the body together with bushing 36 and disks 38 f The O ring 32 and disk 39 are removed upwards Exchanging the Stem Sealing Proceed as per Disassembly until f Then exchange disk 39 a...

Page 11: ...h sealing ring 51 and O ring 52 from body 1 using a special ARGUS tool eccentric f Remove ball 30 spring washers 21 and annular piston 50 f Press stem 31 downwards and take them out of body with thrust ring 44 and bushing 59 f Remove ring 43 O ring 47 compression spring 17 as well as rings 45 upwards Exchanging the Stem Sealing Proceed as per Disassembly until f Remove ring 43 O ring 47 and replac...

Page 12: ... O ring 51 and ring 57 from body 1 f Remove ball 30 bearing seats 13 annular piston 50 and Belleville washers 21 f Press stem 31 downwards and take them out of the body together with bushing 59 and thrust ring 44 f Remove rings 43 45 O ring 47 and Belleville washer 17 upwards Exchanging the Stem Sealing Proceed as per Disassembly until f Take thrust ring 43 and O ring 47 off f Ring 45 and compress...

Page 13: ...ng 44 and stem 31 flange sleeve 59 and compression spring 56 f Unscrew hexagon nuts 20 from body 2 f Remove body 2 O ring 51 and sealing ring 57 from body 1 f Remove ball 30 with 4 round keys 34 counter bearing 14 with flange sleeve 40 annular piston 50 with optional O ring 48 and Belleville spring washers 21 Exchanging the Stem Sealing Proceed as per Disassembly until f Take off ring 43 O ring 47...

Page 14: ...dy 1 f Remove ball 30 counter bearings 14 39 with wearing rings 37 52 and bearing tapes 36 40 annular piston 50 Belleville spring washers 21 17 intermediate ring 45 O ring 47 and bearing ring 43 Exchanging the Stem Sealing Proceed as per Disassembly until f Take off ring 43 O ring 47 and exchange f Depending on the actual requirements a partial disassembly of the ball valve might be sufficient Rea...

Page 15: ...ng 11 with sealing ring 35 f Unscrew hexagonal nuts 4 from body 2 f Take off body 2 O ring 37 and sealing ring 33 from body 1 f Remove ball 21 and sealing rings 31 f Press stem 22 downwards and take it out of the body together with bush 36 and washer 38 f Removed O ring 32 and washer 39 upwards Exchanging the Stem Sealing Proceed as per Disassembly until f Take off O ring 32 and exchange bearing r...

Page 16: ...ng 42 bearing tape 55 on DN 80 and 100 with wiper ring 41 as well as thrust ring 18 with sealing ring 49 f Unscrew hexagon nuts 19 f Take off body 2 O ring 51 and sealing ring 57 from body 1 remove ball 30 and sealing rings 50 f Press stem 31 downwards and take it out of the body together with bush 59 and washer 44 f Remove the seal 47 upwards Exchanging the Stem Sealing Proceed as per Disassembly...

Page 17: ...rew hexagonal nuts 11 from body 2 f Take off body 2 and seal 9 from body 1 remove ball 4 and sealing rings 3 f Take off snap ring 17 stop ring 16 snap ring 14 ring 13 and sliding disk 12 f Then press stem 5 with both O rings 8 bush 6 and wearing ring 7 downwards and take them out of body 1 Depending on the requirements a partial disassembly of the ball valve may be sufficient f To reassemble proce...

Page 18: ...asher 53 rings 44 sealing rings 45 bearing rings 31 and sealing rings 30 with O rings 48 from body 1 and body 2 Exchanging the Stem Sealing Proceed as per Disassembly until f Exchange items 32 and 39 When using a PTFE seal instead of O ring 32 item 39 can be left out Depending on the actual requirements a partial disassembly of the ball valve might be sufficient Reassembly f Place Belleville sprin...

Page 19: ...unscrew the screwed socket 4 together with wiper ring 12 f Remove the safety plate 5 f Undo the hexagon screws 8 with spring washers 9 and lift off the lid 2 with O ring 31 f Remove compression spring 10 pressure disk 7 O ring 32 and bushing 6 f Take the plug shaft 21 out of body 1 Depending on the actual requirements a partial disassembly of the ball valve might be sufficient Reassembly f To reas...

Page 20: ... 0104 00 001 Caution Do not loosen the fixing nuts Figure 0104 03 001 Changing the Seals Danger The ball valve must be depressurized To release pressure turn ball Take care of any hazardous materials that might escape Risk of explosion fire and acid burn The seal is exhausted after being re tensioned several times f Unscrew the nuts on the headless pins f Remove the stuffing box support f Lift the...

Page 21: ...oved Damage can occur if it is not treated correctly Figure 0105 00 001 Drain and Ventilation Safety Plug The safety plug is a special purpose design to prevent the drain and ventilation plug from accidentally being lost In addition it allows the drain and ventilation plugs to be closed immediately if the ball valve is still accidentally pressurized Figure 0105 00 002 Installation The complete saf...

Page 22: ... installing ball valves in the ground Metal Seals 0106 01 001 1 Seals with Soft Inserts 2 Metal Seals Metal seals are used when the limits of use of seals with soft inserts are exceeded see pressure temperature diagram above or for abrasive or aggressive substances Please consult ARGUS in case of need Safety Devices Safety devices are used to lock the ball valves to prevent unauthorized use Forced...

Page 23: ...Argus Ball valves Flowserve Flow Control GmbH Rudolf Plank Straße D 76275 ETTLINGEN Germany Tel 49 72 43 103 0 Fax 49 72 43 103 222 E Mail argus flowserve com 三千控制阀网 www cv3000 com ...

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