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Series KA-N/F, KAP-N/F
9
Maintenance
♦ All repair work is to be performed by qualified
personnel using the appropriate tools.
♦ For the arrangement, designation and item
numbers of all parts of the valve, see Section
10.
♦ Order spare parts with all the details in acc. with
the valve identification.
♦ Only original spare parts may be installed.
♦ To prevent leaks, a regular check of the connec-
tion screws make in line with the operating re-
quirements.
For tightening torques, see Section 1.2.
9.1
Dismantling KA-N/F with
ball/stem unit
9.1.1 KA-N/F with lever
♦ Remove lever 203.
♦ Take out grounding spring washer 557.
♦ Dismantle packing gland follower 503 and spring
gland follower 502.
♦ The thrust ring 405/1, packing bellows 403 and
retaining washer 526 are one unit and it is lev-
ered out using 2 screwdrivers.
♦ Undo screw connection body end piece 102 /
main body 100.
♦ Remove body end piece 102.
♦ Remove ball/stem unit 201 in closed position.
Make sure that you do not damage the body
lining.
♦ Remove seat rings 401.
9.1.2 Packing bellows
♦ Remove retaining washer 526.
♦ Separate thrust ring 405/1 and packing bellows
403 by pushing them apart.
9.1.3 KAP-N/F with actuator
♦ Mount actuator 850 with coupling 804.
♦ Dismantle packing gland follower 503 and spring
gland follower 502.
♦ Remove lantern 510.
Further dismantling is performed as described in
Section 9.1.1 to 9.1.2.
9520-017-en
Revision 15
TM 10477
Edition 05/2022
9.2
Dismantling KA-N/F with
ball/stem
It is possible with a KA-N/F, KAP-N/F with ball and
stem to replace the seat rings and ball without
dismantling the entire ball valve.
It is equally possible to remove the packing gland
follower, spring gland follower and packing insert
without dismantling the body.
The entire ball valve must merely be taken apart to
remove the stem.
For sectional drawings, see Section 10.
9.2.1 Ball and seat rings
♦ Move ball 200 into the 'closed' position.
♦ Undo body nuts and bolts.
♦ Remove body end piece 102.
♦ Remove ball 200 from the main body 101 by
swivelling it.
♦ Remove seat rings 401 from the main body 101
and body end piece 102 and replace.
9.2.2 Packing bellows
♦ Remove lever 203.
♦ Dismantle packing gland follower 503 and spring
gland follower 502.
♦ Take out grounding spring washer 557.
♦ The thrust ring 405/1, packing bellows 403 and
retaining washer 526 are one unit and it is lev-
ered out using 2 screwdrivers.
♦ Remove retaining washer 526.
♦ Separate thrust ring 405/1 and packing bellows
403 by pushing them apart.
9.2.3 Stem
♦ Dismantling as described in section 9.2.1 to
9.2.2.
♦ Undo screw connection body end piece / main
body .
♦ Remove body end piece 102.
♦ Remove ball 200 and stem 202 in closed position.
Make sure that you do not damage the body
lining.
♦ Swivel ball 200 from stem 202.
Page 12
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