Richter KKP/FU Series Ball Valves (ISO/DIN) - Manual (Page 10)

Series KK/F, KKP/F, KK/FU, KKP/FU
Page 10
9520-060-en Revision 02
TM 7692 Edition 11/2009
9.1.2 Dismantling of the packing gland
and stem
After dismantling the seat rings and ball, as de-
scribed in Section 9.1.1, the packing gland and stem
are dismantled as follows:
Dismantle lever 203 and actuator 850.
Undo hex. screw 901/1 of the grounding rope 532.
Undo hex. nut 920/2 and remove cup spring cage.
Force stem 202 downwards with a rubber
hammer and remove.
Dismantle packing rings 402/1.
9.2 Assembly KK/F
9.2.1 Assembly of packing gland and
stem
Prior to assembly all parts are to be cleaned and
the plastic-lined components checked for dam-
age.
Insert stem 202 from below into the body centre
piece 103.
Insert packing rings 402/1.
ATTENTION: Offset overlapping from ring to ring
by 60°- 90°.
Mount disc 550 and then the thrust ring 405.
Attach cup spring cage 504 with hex. nut 920/2.
(Observe torque data; see Section 1.2).
Mount lever 203 and hex. nut 920/1, or with the
KKP first tighten the hex. nut 920/2 and then
mount the coupling.
9.2.2 Assembly of seat ring and ball
Mount ball 200 by threading the ball slot onto the
stem 202.
In the case of balls with a relief or drain bore install
these opposite the direction of flow.
Mount upper seat ring 401.
Install seat rings 401 and transition cover 109 and
attach cover holder 111 again.
ATTENTION: Ensure correct position of the
transition cover! See Section 9.1.1.
For drawing, see Section 10.1.
9.3 Dismantling KK/FU (KHK)
9.3.1 Dismantling of seat ring and ball
Place ball valve on a soft, clean surface.
Undo screw fittings 918/1, 559/1, 920/3 and
remove transition cover 109.
Remove seat rings 401.
Move ball 200 into "closed position " and remove
from the body centre piece 103 by lifting and
turning it.
Further dismantling as described in Section 9.1.2.
9.4 Assembly KK/FU (KHK)
Assembly of packing gland and stem as described in
Section 9.2.1.
9.4.1 Assembly of seat ring and ball
Mount ball 200 by threading the ball slot onto the
stem 202.
In the case of balls with a relief or drain bore,
mount them opposite the direction of flow.
Mount top seat ring 401.
Install seat rings 401 and transition cover 109 and
secure again with the screw fittings 918/1, 559/1,
920/3.
For drawing, see Section 10.2.
9.5 Conversion from hand lever to
actuator
Selection of the actuator in accordance with the
instructions of the actuator manufacturer.
Remove lever 203.
Remove stud screw 905/1 and sealing plug.
Check the fits of coupling, bracket and actuator.
Mount bracket 510 with the opening at right angles
to the direction of flow.
Mount coupling 804 and actuator 850. Observe
actuator position in accordance with the operating
instructions of the actuator.