Maintenance; Dismantling; Ball Valve With Lever; Packing Bellows - Richter KNR/F Series Installation And Operating Manual

Series KNR/F, KNRP/F, KNR-D/F, KNRP-D/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.
♦ Spare parts are to be ordered 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 should be made in line with the oper-
ating requirements.
For tightening torques, see Section 1.3.
9.1

Dismantling

9.1.1 Ball valve 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 (not in DN 150 and DN 200)
are one unit and it is levered out using 2 screw-
drivers.
♦ Undo screw connection body end piece
100
main body .
♦ Remove body end piece 102.
♦ Remove V-control ball/stem unit
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 Ball valve with actuator

♦ Undo setscrew 904/4 in the coupling 804 by one
turn.
♦ Undo sleeve nut 512 on the coupling by about 2
turns. Left-hand thread. Observe drawing in
Sections 10.3 and 10.5.
♦ Remove actuator 850 and coupling 804.
♦ Dismantle packing gland follower 503 and spring
gland follower 502.
9520-003-en Revision 18
TM 10477 Edition 05/2022
♦ Remove bracket 510.
♦ Further dismantling is performed as described in
9.2
♦ Prior to assembly all parts are to be cleaned and
♦ Insert seat rings 401 in the main body 101 and
♦ Mount and adjust V-control ball/stem unit 201.
♦ Observe direction of flow. See sectional drawing in
♦ Mount body end piece 102. Tighten the greased
9.2.1 Packing bellows
♦ Press thrust ring 405/1 into packing bellows 403.
♦ Install retaining washer 526 (not in DN 150 and
♦ Press unit into main body 101.
♦ Press in grounding spring washer 557.
102
/
9.2.2 Ball valve with lever
201 ♦ Mount lever stop 577, spring gland follower 502 (in
. Make sure
♦ Notice direction of rotation of V-control ball/stem
♦ Seal any tapped bores still open with plugs.
♦ Mount lever
9.2.3 Ball valve with actuator
♦ Mount spring gland follower 502 (in DN 80, 100,
♦ Mount bracket
♦ Mount coupling
Section 9.1.1.

Assembly

the plastic-lined parts checked for damage.
body end piece 102.
Make sure that you do not damage the body lining.
Section 10.
housing screws cross over with a tightening torque
according to section 1.3.
DN 200).
DN 80, 100, 150 and 200 are 2 spring gland
followers 502) and packing gland follower 503.
Tighten packing nuts until there is no gap between
packing gland follower and spring gland follower.
See Section 1.3 and 10.4.
unit.
203
.
150 and 200 are 2 spring gland followers 502) and
packing gland follower 503. Tighten packing nuts
until there is no gap between packing gland fol-
lower and spring gland follower. See Section 1.3
and 10.5.
510
with the opening at right angles
to the direction of flow.
804
and actuator
direction of rotation of V-control ball/stem unit.
Page 11
850
. Notice