Richter RSS/F Series Bellows-Sealed Control Valves - Manual (Page 15)

Series RSS/F
Page 15
9260-060-en Revision 03
TM 7168 Edition 06/2008
9.2.2 Assembly
DN 15 - DN 65 (½“.– 2½“)
Insert guide rings 302/1, 302/2.
Clamp valve stem 800 in a vice with protective
jaws.
Screw bellows 206 without lubricant onto the valve
stem 800 and tighten by hand.
Check to see whether the new plug 204 fits in the
valve seat 205. Make sure that neither the seat
nor the plug is damaged.
Screw plug 204 with plug onto the bellows 206
without lubricant and tighten by hand.
Press round cord 522
into the plug 204
leaving about 10 mm
over. This facilitates
the next dismantling
operation.
Fig. 2
Install valve stem 800 with bellows 206 and plug
204 without lubricant into the cover 106.
Insert packing rings 402/1 offset by 90° and thrust
ring 405 into the cover and tighten with packing
nut 404. For tightening torques, see Section 1.3.
Screw travel stop 508 and lock nut 920/2 onto the
valve stem 800.
Carefully lower upper section into the body.
Install cover 106. Tightening torques see Section
1.3.
If the bracket 510 or yoke 516 was dismantled,
install it again. Tighten groove nut 509/1.
Mount the protective bellows 687 with inserted
snap rings 954/1 onto the valve stem 800.
Mount clip 937/1 onto the valve stem 800.
If the actuator 850 was removed, mount it again
now.
Set valve and mount coupling 804.
See Section 9.4.
Set travel stop 508. See Section 9.1.
Attach protective bellows 687 with clip 937/1.
Connect monitoring connection again.
DN 80 und DN 100 (3“ und 4“)
Press guide 801 into the cover 106 without
lubricant.
Now continue as described under assembly
DN 15 - DN 65 (½“.– 2½“).
9.3 Replacing seat
The seat is marked with:
Fig. 3
The plug is marked with:
Fig. 4
A screw-in tool is required for assembling and
dismantling the seat 205. The article numbers for the
individual nominal sizes are listed in Section 1.2.
The new seat is to be carefully protected prior to
assembly. The sealing edge and the sealing surface
for the plug must not be damaged.
Fig. 5
Remove the upper section as described in
Section 9.2.
Using the Richter screw-in tool, turn the seat 205
out of the body. Right-hand thread.
Carefully clean the sealing surface in the body 100
and check for
If there is any damage, you can try to rework the
sealing surface.
Screw the new seat 205 into the body 100 without
lubricant using the Richter screw-in tool. For
tightening torques, see Section 1.3.
Further assembly as described in Section 9.2.