Ramen Valves KS Series User manual
Ramén Valves AB l Fredsforsstigen 22 A, SE-168 67 BROMMA, Sweden
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IOM Ramén Ball Sector Valve type KS DN 25
Ramén Ball Sector Valve type KS DN 25
Safety instructions…………………………………………………………………………………...…………2
Valve material codes……………………………………………………………………………………………3
Pressure and temperature limits..........................................................................................................4
Installation........................................................................................................................................5
Maintenance .....................................................................................................................................7
Table of contents
Ramén Valves AB l Fredsforsstigen 22 A, SE-168 67 BROMMA, Sweden
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Safety instructions
Ramén Ball Sector valve KS-25 is a small control valve that offers 9 different trims for versatile solutions.
To enable high accuracy and rangeability with zero hysteresis the KS-25 trims are engineered with individual
geometries, enabling an outstanding performance in low flow control of liquids and gases.
Make sure that the valve has not been damaged during transport and that it is complying to your order.
Valve body is marked with type, pressure class PN, size DN, flow arrow, material code and serial number.
Valve size and material combination can be identified by marking code on the valve body according to
the following example:
PN 16
= Pressure classPN
→= standard flow direction
KS
= Type
DN 25
= Valve sizeDN
1
= Material combination as per below table
EN 1.4409
= Material inbody
A19xxxx
= Serial number (where 19is year of production)
Function
IMPORTANT!
Valves can be used for temperatures from -400C to +2000C (+2500C). The exact
temperature range is always depending on pressure, media and sealing material.
Always contact your valve supplier if pressure, media and sealing material changes.
See page 4 for tables with pressure and temperature limits.
Valve acceptance inspection
Identification of valve
WARNING!
Risk for serious injury when valve with actuator is bench tested. Avoid
handling the valve with hands or fingers inside the valve! Be very careful when
handling a valve which has been in abrasive service. Worn valve can have sharp
edges on ball sector and seat.
Ramén Valves AB l Fredsforsstigen 22 A, SE-168 67 BROMMA, Sweden
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Valve shall be stored in a clean and dry area preventing corrosion and fouling. It shall be operated to
fully open position. Protection plates shall not be removed until the valve shall be mounted.
Valve material and execution codes
The valve body has an execution code stamped in per following table.
Code number
1A
1B
1C
1E
Body
(Item 1)
EN 1.4460
EN 1.4460
EN 1.4460
EN 1.4460
Flange
(item 1A )
EN 1.4409
EN 1.4409
EN 1.4409
EN 1.4409
Ball Sector + Shafts
(Item 3)
EN 1.4460 +
Hard chrome
EN 1.4460 +
Hard chrome
EN 1.4460 +
Hard chrome
EN 1.4460 +
Hard chrome
Seat holding ring
(Item 2)
EN 1.4460
EN 1.4460
EN 1.4460 +
Hard chrome
EN 1.4460 +
Hard chrome
Seat ring (Item 10)
Carbon/graphite
filled PTFE
Stellite
Stellite
Stellite
deep
execution
Shaft bearing (item 9)
Standard= modified TFE (LR)
Special= SST/PTFE compound (MP)
Shaft sealing type KS
o-ring (Item 13+14)
standard
Viton
Viton
Viton
Viton
Seat back-up o-ring
(Item 15)
standard
Viton
Viton
Viton
Viton
Sealing between inlet
cover ring and body
(Item 16)
standard
Viton
Viton
Viton
Viton
Storing
Ramén Valves AB l Fredsforsstigen 22 A, SE-168 67 BROMMA, Sweden
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Temperature limits for shaft bearing material
Pressure and temperature limits
Temperature related max working pressure in bar for material EN 1.4460:
PN
-400C
+200C
+500C
+750C
+1000C
+1500C
+2000C
+2500C
PN10
10
10
9
8,5
8
7,5
7
7
PN16
16
16
14,5
13,5
13
12
11,5
11
PN25
25
25
23
21,5
20,5
19
18
17,5
PN40
40
40
37
35
33
31
29
28
Material
O-ring seals (Type KS)
Seat ring
Viton
(standard)
Viton
GLT
(L)
EPDM
Peroxi
de
(P)
Kalrez
(K)
Vitoflon
(T)
PTFE
carbon/
graphite
Stellite
Min
temperature
-100C
-400C
-200C
-100C
-100C
-400C
-400C
Max
temperature
+1700C
+1700C
+1200C
(+1400C)
+2000C
(+2500C)*
+2000C
+1700C
+2000C
(+2500C)*
*with shaft bearing material MP (option)
For other materials please contact Ramén Valves AB or your valve supplier.
Material
Standard (type LR)
Option (type MP)
Min temperature
-400C
-400C
Max temperature
+2000C
+2500C
Temperature limits for seat- and sealing material
Attention!
The temperature limits for sealing material varies depending on which type of media
and pressure it will be exposed to. Contact the manufacturer of sealing material or
your valve supplier in all cases of hesitation.
Ramén Valves AB l Fredsforsstigen 22 A, SE-168 67 BROMMA, Sweden
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Installation
Thevalveis normally equipped with an actuator. Depending on the application it can be a hand lever
or a remotely controlled pneumatic or electric actuator. Theactuator may havelimit switches (on-off
application) or positioner (continuouscontrol).
This product shall only be inspected, installed and used by a person who has relevant training
or experience. If any questions or hesitation, contact your valve supplier or Ramén Valves AB.
If the valve shall be equipped with actuator this shall be done before installation in the pipe line.
Separate instruction is supplied on request.
Before installation of the valve, check that the valve data is in conformity with actual type of
service with reference to media, pressure and temperature.
If the valve shall be used as shut-off valve against atmosphere at the end of the pipe,
where possible leakage can cause person injury or property damage, there are special
limits for max working pressure and, if necessary, demands on blocking the actuator.
Contact your valve supplier.
Piping shall be thoroughly cleaned. Check that the pipe flanges are parallel and that the piping system
can not be subject to uncontrolled forces caused by pressure peaks, or pipe forces caused by
variations in temperature.
The valve shall be operated into fully open position after installation and the pipe system be properly
flushed before put into service.
Valve actuator
Installation
Ramén Valves AB l Fredsforsstigen 22 A, SE-168 67 BROMMA, Sweden
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The actual position of the ball sector can be defined on the lower shaft end, opposite to the actuator:
Seat holding ring, (item 2)
with seat, (item 10)
shaft (item 5) with
indication groove
Valve body, (item 1)
Open Closed
The valve’s performance is equal regardless of flow direction. Although it is recommended that the
valveis mounted according to the flow direction arrow.
IMPORTANT!
Install the valve in such position that injury on person, or damage on property, is
avoided in case of leakage from sealing or flange joints. Also, make sure that, in case of
leakage, inflammable media do not come in contact with electrical components or hot
surfaces which can cause fire or damage on property.
Valve position indication
Flow direction
Seat holding ring, (item
2) with seat, (item10)
Shaft (item 5)
with indication
groove
Valve body, (item 1)
Open
Closed
Ramén Valves AB l Fredsforsstigen 22 A, SE-168 67 BROMMA, Sweden
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The valve shall be operated and controlled that closing- and opening functions are correct before start-
up. Check that the valve operates within its max- and min-positions. Limit-switches, positioner, feed-
back signal and torque switches shall be checked for correct function.
Start-up shall be done gradually and under careful attention. If water hammer, leakage, cavitation or
noise occurs in the system they have to be eliminated before they cause any harm
.
Before the valve is dismounted from the pipe, all wiring in form of power supply and control signals as
well as supply air has to be disconnected.
If the valveis equipped with spring closing/opening actuator
thoroughly check that the valvehas taken its fully closed or opened position.
Maintenance
Ramén Ball Sector valverequires no lubrication and a minimum of maintenance. If any part of the
valveshould become damaged it can be replaced by a spare part. Spare parts are obtained fromthe
valvedistributor. Any spare parts order must indicate valvetype (KS), size (DN), material combination
and item number according to the spare parts list.
Startup
Dismounting from pipeline
Attention!
Check that the pipe is depressurized and drained. Great caution must be taken when
there is a risk for toxic or corrosive media is captured in the valve!
Ramén Valves AB l Fredsforsstigen 22 A, SE-168 67 BROMMA, Sweden
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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 flange (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).
g) Remove O-rings (13 and 14). Be careful not to damage sliding ring (13A).
See ”Reassembly”
h) Remove the ball sector (3) from the valve body (1).
Ramén Valves AB l Fredsforsstigen 22 A, SE-168 67 BROMMA, Sweden
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Reassembly
Proceed in reverse order. O-rings (13, 14 15 and 16) shall be lubricated 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
efficiency and life of the shaft seal. Proper mounting of the sliding ring may be done only with the
appropriate tool as shown in fig 2.
DN25 (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 fig 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 fig 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 flange (1A) into position. Mount stop screw
(1B) carefully checking that it goes fully into the hole in the bearing sleeve.
j) Mount the nut (12) slightly with fingers. Fasten the flange (1A) into a vice
and tighten nut (12) hard with a box-spanner.
k) Turn ball sector between open and closed a few times to ensure that the
necessary torque is normal, approx 5 Nm, during the hole stroke.
Ramén Valves AB l Fredsforsstigen 22 A, SE-168 67 BROMMA, Sweden
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Mounting actuator on the valve
Assembly tools
After reassembly
Pressure test the valvewith air from the valvesoutlet side and with the valveclosed. Thevalveimmersed
in water or with leakage spray shall be bubble tight overshaft seals and seat. I small bubbles can be
detected around the shafts it can be enough to actuate the valvea few times allowing the O-rings to find
its correct position. If the valvestill leaks the o-ring has been damaged and must be changed. Valves
with PTFE-seat shall be bubble tight in both directions. Valves with stellited seat will neverbe bubble
tight. These valvescan be tested with water. Max leakage for a new valveis 0,01% of the valvesC
v
/K
v
s-
value.
See separate document "Instruction and guidelines for mounting of pneumatic actuator on
Ramén Ball Sector Vavles type KS (1907)". The document can be provided by your valve
supplier.
Tools for assembly of O-ring and sliding ring. Dimensions specified in mm.
How to use the tool
13A= Sliding ring
13= O-ring
This manual suits for next models
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Table of contents
