Flowserve Valtek FlowTop V726 User Instructions page 40

Valtek FlowTop
Disassembly instructions of the KR bonnet.
WARNING
plug. Both in turn are held in place by frictional forces via
the stem in the stuffing box packing. These can spontane-
ously loosen when lifting and fall out. There is a risk of in-
jury from falling parts.
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).
NOTICE
3. Carefully lower the plug assembly (2.2) out of the bon-
net (3.1).
4. Remove the gasket (1.2).
5. Push the plug assembly (2.2) down out from the sleeve
(2.24).
6. Remove the piston rings (2.12).
7. Use a Packing Driver Tool to remove the packing box
ring (3.2) and packing (3.3) by knocking out from below.
8. Carefully clean the packing chamber of all deposits
using a suitable tool. Do not damage high-quality sur-
faces.
9. Do a visual inspection and only disassemble the plug
assembly (2.2) where necessary see also page 48 - 49
plug / stem screw connection.
Reassembly instructions of the KR bonnet.
10. Reassembly the plug (2.2), lock bushing (2.3) and
stem (2.4) if previously reassembled.
NOTICE
11. Install the new piston rings (2.12).
12. Use a standard brass scraper or other suitable tool to
40
clean the sealing surfaces. Check for corrosion or any
FCD VLEEIMFTOP-03 (EN/A4) June 2023
The expanding force of the piston
rings clamps the sleeve onto the
There are different versions - for details
see 13.5 packing variant (Page 50).
For details see also page 48 - 49 plug /
stem screw connection.
other damage.
Damage sealing surfaces is very likely to
NOTICE
lead to subsequent leaks.
13. Further assembly is carried out as described in the
chapter - body.