Flowserve Valtek FlowTop V726 User Instructions page 34

Valtek FlowTop
Reassembly instructions of the VB # B bon-
net design DN 65 - 400, NPS 3 - 16.
10. Lower the plug (2.2) into a three jaw-chuck with soft
brackets.
11. Put a new lock bushing (2.3) into the plug - cone open
at the top - if the one already used can be removed.
12. Tighten the stem to the specified torque using a tool.
NOTICE
13. Insert the bellows unit (2.4) into the bonnet from be-
low.
14. Place a new seal ring (2.8), seal carrier (2.7) and finger
tighten the hex nut (2.6).
15. Tighten the stem to the specified torque using a tool.
16. Place a new head gasket (2.15) and move the head
(3.15) on the bonnet (3.1).
NOTICE
17. Install and finger tighten the hex nut (3.16).
18. Remove the pre-assembled assembly from the three
jaw-chuck.
19. Further assembly is carried out as described in the
chapter - body.
34
FCD VLEEIMFTOP-03 (EN/A4) June 2023
For details see also page 48 - 49 plug /
stem screw connection.
The control hole should be easily acces-
sible and aligned to the front.
Disassembly instructions of the VI bonnet
design.
Do a visual inspection and only disassemble
NOTICE
assemblies where necessary. This does not
include full servicing after 7 years at the latest.
1. Remove the lifting tool if it has not already been done.
2. Loosen the hex nut (3.6) counter clockwise and re-
move the washer (3.8) and the gland follower (3.4).
There are different versions - for details
NOTICE
see 13.5 packing variant (Page 50).
3. Turn the hex nuts (3.16) counter clockwise to loosen.
4. Remove the head (3.15) and head gasket (2.15).
5. Use a Packing Driver Tool to remove the packing box
ring (3.2) and packing (3.3) by knocking out from below.
6. Carefully clean the packing chamber of all deposits us-
ing a suitable tool. Do not damage high-quality surfaces.
7. Pull out the insulating pipe (3.23) at the top.
8. Pull out the plug assembly (2.2) downwards.
9. Use a standard brass scraper or other suitable tool to
clean the sealing surfaces. Check for corrosion or any
other damage.
Damage sealing surfaces is very likely to
NOTICE
lead to subsequent leaks.
Reassembly instructions of the VI bonnet
design.
10. Lower the plug (2.2) into a three jaw-chuck with soft
brackets.
11. Put a new lock bushing (2.3) into the plug - cone open
at the top - if the one already used can be removed.
12. Tighten the stem to the specified torque using a tool.
For details see also page 48 - 49 plug /
NOTICE
stem screw connection.
13. Insert the insulating pipe (3.23) into the bonnet (3.1)
from above.