3 R 71 EN - Issue 9/2020
9
•
Place the seat package into the body as shown in Figs. 18 and 19.
•
Check that the spring angles extend to the control face.
•
Place a screwdriver on each visible spring angle one after the
other and knock the spring into the groove, see Fig. 20.
•
Turn the segment 180° clockwise and knock the rest of the spring
angles into the groove, Fig. 21. A special tool available from the
manufacturer may also be used for the work phases in Figs. 20
and 21.
•
Use a plastic spindle to ensure that the seat is correctly placed
and can move freely, Fig. 25.
4.6 Dismantling the valve
•
Turn the valve into the closed position.
•
Remove the pin lockings either by grinding or using a spindle.
Detach the pins (14 and 15) by drilling, Fig. 23. Be careful not to
damage the original bores. Note! The pins and the drive shaft
have been secured by welding in the titanium version and in the
acid-resistant high-consistency version S.
Fig. 18
Slipping the seat into the body
Fig. 19
Pushing the the spring angles against the control face
Fig. 20
Knocking the spring into the groove
Fig. 21
Knocking the spring after turning the seat around
Fig. 22
Securing with a plastic spindle
Fig. 23
Drilling the pin, R1L and R2_S
Conical pin
part no. 50
DN 25...300
A - A
A
A
Cylindrical pin
part no. 14
DN 25...40
Cylindrical pin
part no. 14
DN 50...400
DN
DRILL ø (mm)
L (mm)
25,
40
2,0
18
50
3,5
25
80, 100
4,2
33
150
5,0
43
200
7,0
52
250, 300
8,8
60
350, 400
12,0
90
L
Cylindrical pin
part no. 15
DN 350...400
A
A
L
