handtmann 491 - 8 Disassembly; Assembly; Disassembly of the Valve Inset

Disassembly/ Assembly
29.06.2016
DOUBLE-SEAT VALVE (Type 491)
BA 049100.06 EN 21 / 34
8 Disassembly/ Assembly
8.1 Disassembly of the Valve Inset
The disassembly of the valve inset is described in this chapter.
08
Fig. 7: Representation of the valve inset
Warning - Danger from electrical current!
Before disassembly, the connections for auxiliary energy and the supply pipes (electric,
pneumatic, CIP) should be separated from the valve.
Serial No. Type of activity
1
Unscrew the banjo bolt with the flushing pipe [2], the flush chamber piping [7]
and the plug for the proximity switch.
2
Place the assembly device [1] on the valve cover.
Screw the assembly devices threaded rod into the valve rod.
3
Turn the threaded rod’s lock nut and lift the valve approx. 6 mm.
4
Remove the securing bolt [4] for the valve inset.
5
Lift the assembly device with the valve inset [3] completely out of the valve
housing.
6
Unscrew the lower bushing [5]. (Only necessary when changing the lip sealing).
Caution – Damage to components!
Do not damage the valve disks and balancer!
5
8
3
1
9
6
4
7
2 2