Samson 3323 Service manual

Mounting and
Operating Instructions
EB 8113/8114 EN
Series V2001
Type 3323 Three-way Valve
Edition August 2013

2 EB 8113/8114 EN
Denition of signal words
DANGER!
Hazardous situations which, if not
avoided, will result in death or seri-
ous injury
WARNING!
Hazardous situations which, if not
avoided, could result in death or se-
rious injury
NOTICE
Property damage message or mal-
function
Note:
Additional information
Tip:
Recommended action


1 General safety instructions.............................................................................5
2 Design and principle of operation ..................................................................6
3 Installation....................................................................................................8
3.1 Assembling valve and actuator .......................................................................8
3.2 Mounting position........................................................................................10
3.3 Strainer, bypass ...........................................................................................10
3.4 Arrangement of the valve .............................................................................10
4 Operation...................................................................................................10
5 Maintenance – Replacing parts ....................................................................12
5.1 Removing the actuator..................................................................................12
5.2 Replacing the packing..................................................................................14
5.2.1 Standard valve bonnet .................................................................................14
5.2.2 Insulating section .........................................................................................16
5.3 Replacing the seat and/or plug.....................................................................17
5.3.1 Valves in DN 15 and 25...............................................................................17
5.3.2 Valves in DN 32 to 100................................................................................18
5.4 SAMSON seat wrench and tightening torques ..............................................22
6 Description of the nameplate .......................................................................23
7 Dimensions .................................................................................................23
8 Customer inquiries ......................................................................................23
Contents
EB 8113/8114 EN 3

1 General safety instructions
−The control valve must be mounted, started up or serviced by fully trained
and qualied personnel only; the accepted industry codes and practices are
to be observed. Make sure employees or third persons are not exposed to
any danger.
All safety instructions and warnings given in these mounting and operating
instructions, particularly those concerning installation, start-up and mainte-
nance, must be strictly observed.
−The control valves comply with the requirements of the European Pressure
Equipment Directive 97/23/EC. Valves with a CE marking have a declara-
tion of conformity which includes information about the applied conformity
assessment procedure. The declaration of conformity is available on re-
quest.
−To ensure appropriate use, only use the control valve in applications where
the operating pressure and temperatures do not exceed the specications
used for sizing the valve at the ordering stage. The manufacturer does not
assume any responsibility for damage caused by external forces or any oth-
er external factors.
Any hazards that could be caused in the valve by the process medium, the
operating pressure, the signal pressure or by moving parts are to be pre-
vented by taking appropriate precautions.
−Proper shipping and storage are assumed.
WARNING!
−For installation and maintenance, make sure the relevant section of the
pipeline is depressurized and, depending on the process medium, drained
as well. Depending on the eld of application, allow the valve to cool down
or heat up to reach ambient temperature before starting any work on it.
−When working on the valve, make sure that the pneumatic air supply or
power supply as well as the control signal are disconnected to prevent any
hazards due to moving parts.
−Be particularly careful if the actuator springs of pneumatic control valves
are preloaded. Such actuators are labeled correspondingly and can also be
identied by three long bolts protruding from the bottom of the actuator. Be-
fore starting any work on the valve, relieve the compression from the pre-
loaded springs.
EB 8113/8114 EN 5
General safety instructions

2 Design and principle of oper-
ation
Fig. 1
The Type3323 Three-way Valve has a mod-
ular design and can be combined with pneu-
matic or electric actuators (as described in
the next section).
Depending on the plug arrangement, the
three-way valve can be used for either mix-
ing or diverting service.
In mixing valves, the process media to be
mixed enter at valve ports Aand B. The
combined ow exits the valve at port AB.
In diverting valves, in contrast, the process
medium enters at the valve port AB and the
partial ows exit at ports Aand B.
The ow rate from ports A or B to AB and
vice versa depends on the cross-sectional ar-
ea of ow between the seats and plugs.
The plug (5, 199) is moved by changing the
control signal applied to the actuator. The
plug stem (36) is sealed by a spring-loaded
PTFE V-ring packing (16) and is connected
to the actuator stem by the stem connector.
6 EB 8113/8114 EN
Design and principle of operation

7
35
2
14
2.1
17
4
AB
141
B
40
192
74
199
75
A
5
74
36
11
12
8
16
54
59
36
5
4
74
75
74
141
199
2 Valve bonnet
2.1 Flange
4 Seat
5 Plug
7 Stem connector
8 Threaded bushing
11 Spring
12 Washer
14 Nut
16 Packing
17 Body gasket
35 Nut
36 Plug stem
40 Self-locking nut
54 Nut
59 Crossbeam
74 Pipe
75 Pipe (short)
141 Seat
192 Retaining washer
199 Plug
Fig. 1: Type 3323 as mixing valve in DN 32/50; detailed drawing (right) showing the plug
arrangement of diverting valve
EB 8113/8114 EN 7
Design and principle of operation

3 Installation
3.1 Assembling valve and ac-
tuator
The valve and actuator are delivered sepa-
rately and must be assembled on site.
There are different ways to assemble the
valve and actuator depending on the actua-
tor model and the nominal size.
The following tables show the actuators that
can be used and the associated instructions.
Types 3371, 3372, 5824 and 3374 Actua-
tors on Type3323 Valve up to DN 50
(NPS2), Fig. 3
Form B attachment (mounting using a central
nut) is performed according to the associat-
ed Mounting and Operating Instructions.
Actuator For control
valve
Associated
instructions
Type
3371
Type 3323-PP uEB 8317 EN
Type
3372
Type 3323-IP uEB 8313-1 EN
uEB 8313-3 EN 1)
Type
5824
Type 3323-E1 uEB 5824-1 EN
uEB 5824-2 EN 2)
Type
3374
Type 3323-E3 uEB 8331-3 EN
uEB 8331-4 EN 2)
1) Version with Type 3725 Positioner
2) Version with integrated positioner
Types 3371 and 3372 Actuators on
Type3323 Valve in DN 65 (NPS 2½) and
larger, Fig. 3
Form C attachment (mounting using rods) is
performed according to the associated
Mounting and Operating Instructions.
Actuator For control
valve
Associated
instructions
Type 3371 Type 3323-
PP
uEB 8317 EN
Type 3372 Type 3323-IP uEB 8313-1 EN
uEB 8313-3 EN 1)
1) Version with Type 3725 Positioner
Type 3374 Actuator on Type 3323 Valve in
DN 65 (NPS 2½) and larger, Fig. 2
1. Place the actuator yoke on the valve bon-
net and fasten using two M8 hexagon
socket screws.
2. Extend the actuator stem using the manu-
al override until the actuator stem touch-
es the plug stem.
3. Position the clamps of the stem connector
and fasten with screws.
Fig. 2: Type 3374 in DN 65 and larger
8 EB 8113/8114 EN
Installation

Form B attachment (mounting using a central nut)
33
35
59
54
Form C attachment (mounting using rods)
7
33
60
2
54
2 Valve bonnet
7 Stem connector
33 Rods
35 Nut
54 Nut
59 Crossbeam
60 Plate
Fig. 3: Form B attachment (mounting using a central nut) and Form C attachment (mounting using
rods)
EB 8113/8114 EN 9
Installation

3.2 Mounting position
The valve can be mounted in any desired
position. However, the restrictions for the ac-
tuator used must be strictly observed.
NOTICE
Install the valve free of stress and
with the least amount of vibrations as
possible.
If necessary, support the pipelines
near the connections.
Since sealing parts, weld spatter and
other impurities carried along by the
medium may impair the tight shut-
off of the seat and plug, ush out the
pipeline thoroughly before installing
the valve in the pipeline.
Pipeline routing
To ensure that the control valve functions
properly, the pipeline must be straight and
without any manifolds or disturbances for a
distance of at least 6times the valve size
(DN) upstream and downstream of the valve.
Contact SAMSON if this distance cannot be
observed.
3.3 Strainer, bypass
We recommend to install a SAMSON Type 2
Strainer upstream of the valve, and upstream
of both inlet ports in mixing valves.
We recommend installing a shut-off valve
both upstream of the strainer and down-
stream of the valve to ensure that the plant
does not need to be shut down for mainte-
nance. In addition, install a bypass line.
3.4 Arrangement of the valve
Install the valve as shown in Fig. 4 depend-
ing on whether it is to be used for mixing or
diverting service.
Fail-safe action: the valve shuts off the ow
of the heating medium or opens the ow of
the cooling medium.
The plug arrangement (i.e. either mixing or
diverting valve) is indicated on a label at-
tached to the valve body.
4 Operation
The operating instructions only apply in con-
junction with the actuator. Refer to the corre-
sponding Mounting and Operating Instruc-
tions.
10 EB 8113/8114 EN
Operation

Mixing service - Temperature
control Q = constant
Diverting service - Flow control
Q = 0 to 100 %
Actuator stem extends (FA)
Actuator stem retracts (FE)
AAB
B
a
Flow pipe
Return ow
pipe
A
AB
B
b
Flow pipe
Return ow pipe
Heating with mixing valve FA
Cooling with mixing valve FE
a) Installation in ow pipe
b) Installation in return ow
pipe
AAB
B
c
Flow pipe
Return ow pipe
AAB
B
d
Flow pipe
Return ow
pipe
Heating with mixing valve FA
Cooling with mixing valve FE
c) Installation in ow pipe
d) Installation in return ow
pipe
AAB
B
e
Flow pipe
Return ow
pipe
A
AB
B
f
Flow pipe
Return ow pipe
Heating with diverting valve FA
Cooling with diverting valve FE
e) Installation in return ow
pipe
f) Installation in ow pipe
AAB
B
g
Flow pipe
Return ow
pipe
AB A
B
h
Flow pipe
Return ow
pipe
Heating with diverting valve FA
Cooling with diverting valve FE
g) Installation in return ow
pipe
h) Installation in ow pipe
Fig. 4: Typical installations
EB 8113/8114 EN 11
Operation

5 Maintenance – Replacing
parts
The control valve is subject to normal wear,
especially at the seat, plug and packing. De-
pending on the operating conditions, check
the valve at regular intervals to prevent pos-
sible failure before it can occur.
External leakage can indicate that the pack-
ing is defective.
If the valve does not close tightly, tight shut-
off may be impaired by dirt stuck between
the seat and plug or by damaged facings.
WARNING!
Before performing any work on the
control valve, make sure the rele-
vant plant section has been depres-
surized and, depending on the pro-
cess medium, drained as well.
When used at high temperatures,
allow the plant section to cool
down to ambient temperature.
Make sure the electrical or pneumat-
ic control signal for the actuator is
switched off. Remove the signal pres-
sure line of a pneumatic actuator.
As valves are not free of cavities, re-
member that residual process me-
dium might still be contained in the
valve. We recommend removing the
valve from the pipeline.
We recommend removing the parts, cleaning
them, and, if necessary, replacing them with
new ones.
5.1 Removing the actuator
Before performing any repair work on the
valve, remove the actuator from the valve.
Valve up to DN 50 (NPS 2) – Form B attach-
ment (mounting using a central nut), Fig. 5
ÎUndo the screws on the stem connector
(7) and remove the stem connector.
ÎUnscrew the nut (35) and lift the actuator
off the valve bonnet (2).
35
2
7
2 Valve bonnet
7 Stem connector
35 Nut
Fig. 5: Removing actuators from Type3323
Valve up to DN 50
12 EB 8113/8114 EN
Maintenance – Replacing parts

Valve in DN 65 (NPS 2½) and larger –
Form C attachment (mounting using rods),
Fig. 6
ÎUndo the screws on the stem connector
(7) and remove the stem connector.
ÎUndo nuts (54) while holding the rods
(33) stationary with an open-end wrench
(SW 22) to prevent them from turning.
ÎLift the actuator including the plate (60)
off the valve bonnet (2).
7
33
60
2
54
2 Valve bonnet
7 Stem connector
33 Rods
54 Nuts
60 Plate
Fig. 6: Removing Types 3371 and 3372 Actu-
ators from Type3323 Valve in DN 65
and larger
Valve in DN 65 (NPS 2½) and larger –
mounting on yoke, Fig. 7
ÎUndo the screws on the stem connector
(7) and remove the stem connector.
ÎUnscrew the two hexagon socket screws
(S) and lift actuator together with the
yoke off the valve bonnet.
7
S
7 Stem connector
S Hexagon socket screws
Fig. 7: Removing Type 3375 Actuator from
Type3323 Valve in DN 65 and larger
EB 8113/8114 EN 13
Maintenance – Replacing parts

5.2 Replacing the packing
Note:
Contact your nearest SAMSON sub-
sidiary or the SAMSON After-sales
Service department for information
on suitable lubricants.
5.2.1 Standard valve bonnet
In case of leakage at the packing, the pack-
ing (16) must be renewed.
Removing the valve bonnet, Fig. 8
Valve up to DN 50
1. Unscrew the threaded bushing (8).
2. Unscrew nuts (14) and lift off ange
(2.1).
Valve in DN 65 and larger
1. Unscrew the threaded bushing (8).
2. Unscrew nuts (14) and lift the valve bon-
net (2) off the valve body over the plug
stem.
3. Check the body gasket (17) located in
the valve body for damage. We recom-
mend renewing the body gasket.
Up to DN 50 DN 65 and higher
2
17
36
8
35
16
14
2.1
16
12
11
36
8
2
14
17
2 Valve bonnet
2.1 Flange
8 Threaded bushing
11 Spring
12 Washer
14 Nut
16 Packing
17 Body gasket
35 Nut
36 Plug stem
Fig. 8: Valve bonnet
14 EB 8113/8114 EN
Maintenance – Replacing parts

4. Use a suitable tool to pull the damaged
packing (16) out of the valve bonnet.
Remove washer (12) and spring (11)
and clean the packing chamber.
Installing the packing, Fig. 9
5. Apply a suitable lubricant to each part of
the new packing as well as to the plug
stem.
6. Insert the spring (11) and then the wash-
er (12) into the packing chamber.
7. Carefully slide the parts of the new pack-
ing (16) into the packing chamber.
8. Apply a suitable lubricant to the thread
of the threaded bushing (8). Lightly screw
in the threaded bushing, but do not tight-
en it yet.
Mounting the valve bonnet
Valve up to DN 50
9. Place the valve bonnet (2), while turning
it, over the plug stem (36) onto the valve
body.
Make sure that the body gasket (17) is
seated properly.
10.Place the ange (2.1) on the bonnet and
fasten it with the nuts (14) (observe tight-
ening torque listed in Table1). Tighten
the threaded bushing.
Valve in DN 65 and larger
9. Place the valve bonnet (2), while turning
it, over the plug stem (36) onto the valve
body. Make sure that the body gasket
(17) is seated properly.
10.Fasten the bonnet with the nuts (14) (ob-
serve tightening torque listed in Table1).
Tighten the threaded bushing.
8
16
12
11
2
2 Valve bonnet
8 Threaded bushing
11 Spring
12 Washer
16 Packing
Fig. 9: Packing parts
EB 8113/8114 EN 15
Maintenance – Replacing parts

5.2.2 Insulating section
Fig. 10
The insulating section is used to extend the
distance between the packing and the valve
as well as the process medium. This results in
a wider temperature range.
The arrangement of the packing in the insu-
lating section is the same as in the standard
bonnet. Proceed as described in section
5.2.1 to replace the packing.
Up to DN 50 DN 65 and higher
8
16
12
11
2.1
36
35
14
12
36
8
16
11
17
2
14
2 Valve bonnet
2.1 Flange
8 Threaded bushing
11 Spring
12 Washer
14 Nut
16 Packing
17 Body gasket
35 Nut
36 Plug stem
Fig. 10: Insulating section with packing
16 EB 8113/8114 EN
Maintenance – Replacing parts

5.3 Replacing the seat and/or
plug
Valves in DN 15 and 25 can be used both
as mixing or diverting valves. The direction
of ow is the only factor in this case that de-
termines the application. Therefore, it is not
necessary to rearrange the valve. The valve
construction only has one plug.
Valves in DN 32 and larger have two plugs.
Their arrangement differs depending on
whether the valve is to be used as mixing or
diverting valve.
When checking or replacing the seat or
plug, we also recommend replacing the
packing (16) and the body gasket (17).
When disassembling the valve, it is impor-
tant to lay out the parts in the exact order
they were disassembled in to facilitate as-
sembly later.
Refer to Table1 for the required tightening
torques for seats (4, 141) and nuts (14, 40)
on the body and plug stem.
5.3.1 Valves in DN 15 and 25
Disassembly, Fig. 11
1. Unscrew threaded bushing (8), remove
nuts (14) and lift off ange (2.1).
2. Lift the valve bonnet (2) off the valve
body over the plug stem.
3. Check the body gasket (17) located in
the valve body for damage. We recom-
mend renewing the body gasket.
4. Hold the plug stem (36) stationary from
above at the hexagonal part with a suit-
able tool and undo the nut (40) from be-
low.
5. Remove the retaining washer (192) from
below.
6. Carefully pull the plug stem out of the
body from above.
7. Unscrew the top seat (4) using a seat
wrench.
36
8
16
14
2.1
4
141
2
17
5
19
2
40
2 Valve bonnet
4 Seat
5 Plug
8 Threaded
bushing
14 Nut
16 Packing
17 Body gasket
36 Plug stem
40 Self-locking nut
141 Seat
192 Retaining washer
Fig. 11: Seats and plug for DN 15 and 25
EB 8113/8114 EN 17
Maintenance – Replacing parts

8. Once the plug (5) has been removed, the
bottom seat (141) can also be removed
using the seat wrench.
9. Carefully clean all the parts and renew
them, if necessary.
Assembly
Proceed in the reverse order to assemble the
parts:
1. Mount bottom seat (141).
2. Insert the plug (5) with the three skirt pro-
jections facing upwards.
3. Mount top seat (4).
4. Guide the plug stem (36) from above
through the plug (5).
5. Place the retaining washer (192) on the
plug stem and mount the nut (40).
6. Apply a suitable lubricant to the plug
stem in the area where the packing is lo-
cated.
7. Carefully place the valve bonnet (2) over
the plug stem (36) onto the valve body.
8. Place on ange and fasten with nuts
(14).
9. Apply a suitable lubricant to the thread
of the threaded bushing (8). Mount bush-
ing.
5.3.2 Valves in DN 32 to 100
Disassembly, Fig. 8 and Fig. 12
Valve bonnet (DN 32 and 50)
1. Unscrew the threaded bushing (8).
2. Remove nuts (14) and lift off ange (2.1).
Valve bonnet (DN 65 and larger)
1. Unscrew the threaded bushing (8).
2. Remove nuts (14) and lift the valve bon-
net (2) off the valve body over the plug
stem. Check the body gasket (17) located
in the valve body for damage. We rec-
ommend renewing the body gasket.
Mixing valve
3. Hold the plug stem (36) stationary from
above at the hexagonal part with a suit-
able tool and undo the nut (40) from be-
low.
4. Remove the retaining washer (192) and
pipe (74) from below.
5. Carefully pull the plug stem (36) out of
the body from above, while removing the
short pipe (75) sideways.
6. Unscrew the top seat (4) using seat
wrench (see Table1).
7. Remove the top plug (5) and bottom plug
(199) from the valve body.
8. Unscrew the bottom seat (141) using seat
wrench.
9. Carefully clean all the parts and renew
them, if necessary.
Diverting valve
3. Hold the plug stem (36) stationary from
above at the hexagonal part with a suit-
able tool and undo the nut (40) from be-
low.
18 EB 8113/8114 EN
Maintenance – Replacing parts

Mixing valve Diverting valve
36
4
75
141
74
5
19
9
32
5
4
141
199
40
192
74
75
74
DN 32 and 50 DN 32 and 50
75
74
40
5
4
74
141
19
9
192
75
40
5
4
74
14
1
199
192
36
DN 65 and higher DN 65 and higher
4 Seat
5 Plug
36 Plug stem
40 Self-locking nut
74 Pipe
75 Pipe (short)
141 Seat
192 Retaining washer
199 Plug
Fig. 12: Plug arrangement for valves in DN 32 to 100
EB 8113/8114 EN 19
Maintenance – Replacing parts

4. Remove the retaining washer (192) and
pipe (74) from below. Carefully pull the
plug stem out of the body from above.
The pipes (74, 75) for xing the plug in
place will now fall off the plug stem.
5. Remove the top plug (5) from the valve
body.
6. Unscrew the top seat (4) and then the
bottom seat (141) using a suitable seat
wrench (see Table1).
7. Remove the bottom plug (199) from the
valve body.
8. Carefully clean all the parts and renew
them, if necessary.
Mounting the seat/plug
Apply a suitable lubricant to the thread and
the sealing cone of the new or remachined
seats as well as to the nuts (40) and the
threaded end of the plug stem.
On mounting the spacer pipes and plug, use
a rod or long screw to hold them in position.
Mixing valve
1. Screw in the bottom seat (141) using seat
wrench. Observe the tightening torque in
Table1.
2. Insert the bottom plug (199) into the seat
(141) and hold the pipe (74) and the top
plug (5) from below using a rod.
3. Mount top seat (4) with the seat tool.
4. Slide the pipe (74) on the plug stem and
push the plug stem from above through
the top plug (5), pipe (75) and bottom
plug (199), while removing the rod (used
as a tool) from below out of the valve.
5. Slide the bottom pipe (74) and retaining
washer (192) from below onto the plug
stem and tighten the nut (40), while hold-
ing the plug stem stationary. Observe the
tightening torque in Table 1.
Diverting valve
1. Place the bottom plug (199) in the valve
body as shown and mount the bottom
seat (141) using a seat wrench, observ-
ing the tightening torques in Table1.
2. Capture the bottom plug (199) and piec-
es of pipe (74, 75) using the rod as a
tool.
3. Mount the top seat (4) using the seat
wrench and applying the tightening
torque in Table1.
4. Place the top plug (5) in the top seat (4).
5. Guide the plug stem (36) from above
through the plug (5), spacer pipes (74,
75) and bottom plug (199).
6. Place the retaining washer (192) from
below on the plug stem and mount the
nut (40), while holding the plug stem sta-
tionary.
Observe tightening torque in Table1.
Mounting the valve bonnet
1. Apply a suitable lubricant to the plug
stem (36) in the area where the packing
is located.
2. Carefully place the valve bonnet (2) over
the plug stem onto the valve body.
20 EB 8113/8114 EN
Maintenance – Replacing parts