4.650B_UK - 4
Ref. 4.650B_UK - 2015-01-14. www.axel-larsson.se
MANUAL
BALL SECTORVALVE AL 74-KS / KSP
DN 300 (12")
a) Loosen nuts (21), remove bolts (20) and clamping rings (19)
b) Remove inlet cover ring (2)
c) Lift out seat support ring (7).
d) Lift out seat ring (10) carefully from its groove using a pointed tool
and the O-rings (15 and 16).
e) Loosen screws (12) enough to loosen the bearing sleeves (4).
f) Pull the bearing (4) out from the shafts and out of the body or/and
knock on the shaft (6) and eventually on the bearing.
g) Push out the shaft (5) and eventually the bearing by means of a rod
inserted through the shaft hole.
h) Remove O-rings (13 and 14). Be careful not to damage sliding ring
(13A). See ”Reassembly”.
REASSEMBLY
Proceed in reverse order. O-rings (13, 14 15 and 16) shall be lubrica-
ted with suitable grease before reassembling. Please note ”Important
when assembling ” below. If the o-rings show sign of wear or other
damage, check if the most appropriate o-ring material has been used.
Check the sliding ring (13A) replace if necessary.The sliding ring is
not necessary for the valve function but will increase the efciency
and life of the shaft seal. Proper mounting of the sliding ring may be
done only with the appropriate tool as shown in g 2.
Important when reassembling:
DN 25 (1")
a) Check carefully that the groove for the o-rings (13 and 14) is clean
and free from damage.Also check the conical entrance on the
bearing sleeve and lower shaft hole on the body.
b) Apply silicon grease generously on the O-rings before assembling.
Mount the sliding rings (13A), and the ball sector (3) with tool
shown in g 2.
c) Mount o-ring (13) on the drive shaft but not on the lower shaft.
Insert the drive shaft into the big inlet hole in the body and then
into the big shaft hole so that the ball sector now is in the body.
d) Mount O-ring (14) on bearing sleeve (4) and roll up the bearing (9)
on its place in the bearing sleeve. Carefully mount the bearing
sleeve on the drive shaft taking notice that the bearing (9) and O-
ring (13) not is damaged.
e) Mount the split ring (4A) in its groove on the bearing sleeve(4)
then push the bearing sleeve out from the body until the split ring
meets the valve body. Hold the bearing sleeve in this position and
push the lower shaft through its hole in the body as much as it
needs to mount the O-ring (13) from the outside of the valve body.
Apply lubricant generously.
f) With greatest care, push the shaft and O-ring into its place in
the valve body using a proper tool, f. ex. the sliding ring tool, see g
2. Use the tool to push the O-ring, alternately pull the shaft, until
the O-ring reaches its sealing position.This position is reached
when the ball sector sphere are in the middle of the body.
g) Mount O-ring (15) and seat (10) in the holding ring (2) and O-ring
(16).Turn the ball sector clockwise into closed position.
h) Mount the seat holding ring with screws (11). Check that the seat
holding ring is in full contact with body. Eventually the holding ring
can be pressed to the body with help of a jaw vice with soft grips.
i) Turn the bearing sleeve so that the hole for the stop screw (1B)
pointing in right direction, then push the ange (1A) into position.
Mount stop screw (1B) carefully checking that it goes fully into the
hole in the bearing sleeve.
MAINTENANCE
Ramén Ball Sector valve requires no lubrication and a minimum of
maintenance. If any part of the valve should become damaged it can
be replaced by a spare part. Spare parts are obtained from the valve
distributor.Any spare parts order must indicate valve type (KS), size
(DN), material combination and item number according to the spare
parts list.
Design change
Valves type KS, DN40-300, which from the year 1997 are delivered
with a number 2 stamped before or after the type (2KS or KS2) are
supplied with a locking ring , pos 4A on the inside en of the shaft
(DN40-50) or on the bearing sleeve (DN80-300).
DISASSEMBLY
DN 25 (1")
a) Loosen and remove screws (11) and inlet cover ring (2).
b) Lift out seat ring (10) carefully from its groove using a pointed tool.
and the O-rings (15 and 16).
c) Loosen the nut (12) and pull out fastening ange (1A).
d) Push bearing sleeve (4) into the valve and remove split ring (4A).
e) Pull bearing sleeve (4) out from the valve body (1), and shaft with
ball sector (3) out from the bearing sleeve (4).
f) Remove Rulon bearing (9) from the shaft (3).
DN 40-50 (1 1/2" - 2")
a) Loosen screws (11) and inlet cover ring (2)
b) Lift out seat ring (10) carefully from its groove using a pointed tool.
and the O-rings (15 och 16).
c) Lift out seat support ring (7).
d) Loosen locking rings (18) and washer (17) at both trunnion shaft
ends.
e) Push the ball sector slightly so that the locking ring, 4A, can be
removed using a small screw driver. Pull out trunnion shaft (6) by
fastening it in a jaw vice and then knocking on the actuator ange
on the valve body.
f) Push out trunnion shaft (5) by means of a rod inserted through the
shaft hole.
g) Remove Rulon bearing (9) from the shafts.
h) Remove O-rings (13 and 14). Be careful not to damage sliding ring
(13A). See ”Reassembly”
DN 80-250 (3" - 10")
a) Loosen screws (11) and inlet cover ring (2)
b) Lift out seat ring (10) carefully from its groove using a pointed tool
and the O-rings (15 and 16).
c) Lift out seat support ring (7).
d) Loosen locking rings (12) enough to loosen the bearing sleeves
(4). Push the ball sector slightly so that the locking ring, 4A, can be
removed using a small screw driver.
e) Pull out the bearing sleeves (4) from the shafts and out of the valve
body, and/or trunnion shaft (6) by fastening it in a jaw vice and then
knocking on the actuator ange on the valve body.
f) Push out trunnion shaft (5) and eventually the sleeve (4) by means
of a rod inserted through the shaft hole.
g) Remove Rulon bearing (9) from the shafts.
h) Remove O-rings (13 and 14). Be careful not to damage sliding ring
(13A). See ”Reassembly”
