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Pfeiffer Chemie-Armaturenbau GmbH • Phone: +49 2152 2005-0 • Fax: +49 2152 1580 • E-Mail: [email protected] • Internet: www.pfeiffer-armaturen.com

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EB 26a_EN

Item

Description

Material

1

Main body

Variable

2

Side body

Variable

4

Ball

1.4408

5

Shaft

1.4571

6

Packing fl ange

1.4571

7

Bearing bushing

PTFE with glass

8

Bearing bushing

PTFE with carbon

9

Seat rings

TFM

10

Ring

PTFE

10a

Ring

Carbon-Graphite

11

Set of spring washers

1.8159 / Delta Tone

12

V-ring packing

PTFE / 1.4305

13

Disk spring

1.4404 / PTFE

14

Screw

A2-70

15

Screw

A2-70

Table 2 – Parts list

Fig. 5 - Detail drawing of standard version of Series 26a Ball Valve

Summary of Contents for 26a Series

Page 1: ...pecial ball valves 6 5 1 Assembling the high temperature ball valve 6 6 Troubleshooting 9 7 Repair of the ball valve 9 7 1 Replacing the packing 9 7 2 Replacing the sealing unit and ball 9 7 3 Further...

Page 2: ...e body 2 Place the side body 2 together with the ready mounted seat ring 9b on the main body 1 and carefully push them together The transfer of these instructions to third parties is only allowed with...

Page 3: ...4 Ball 1 4408 1 4571 5 Shaft 1 4571 6 Packing flange 1 4571 7 Bearing bushing PTFE with glass 8 Ring PTFE with carbon 9 Seat ring TFM 10 Ring PTFE 10a Ring Carbon Graphite 11 Set of spring washers 1...

Page 4: ...together Note Refer to Table 3 in Section 4 4 for the tightening torques for each nominal size Slide the parts of the V ring packing 12 turning them slightly over the mounted shaft 5 and insert them i...

Page 5: ...Side body Variable 4 Ball 1 4408 5 Shaft 1 4571 6 Packing flange 1 4571 7 Bearing bushing PTFE with glass 8 Bearing bushing PTFE with carbon 9 Seat rings TFM 10 Ring PTFE 10a Ring Carbon Graphite 11...

Page 6: ...ghtening torques 5 Assembly of special ball valves 5 1 Assembling the high temperature ball valve Version with HSB metal seals 5 1 1 Preparation for assembly Before assembling the ball valve carefully...

Page 7: ...cking flange 1 4571 7 Bearing bushing 1 4571 HSB7 8 Ring Carbon Graphite 9 Seat ring 1 4571 HSB3 10 Ring Carbon Graphite 10a Ring Carbon Graphite 11 Set of spring washer Inconel 718 12 Packing Carbon...

Page 8: ...asten the body halves 1 and 2 together by tightening the lightly greased nuts 14a and studs 14 evenly in a criss cross pattern Push the graphite packing 12 turning it slightly over the mounted shaft 5...

Page 9: ...packing To remove the packing disassemble the valve in reverse or der to that described in the corresponding section Check the rings of the packing and all sealing parts for damage In case of doubt re...

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