Samson 3347-1 Service manual

Translation of original instructions
EB 8097 EN
Type3347-7, cast body with welding
ends
Type3347-7, bar stock body with
threaded connections
Edition May 2016
Type3347-1 and Type3347-7 Pneumatic Control Valves

Note on these mounting and operating instructions
These mounting and operating instructions assist you in mounting and operating the device
safely. The instructions are binding for handling SAMSON devices.
ÎFor the safe and proper use of these instructions, read them carefully and keep them for
later reference.
ÎIf you have any questions about these instructions, contact SAMSON‘s After-sales Service
Department (aftersalesser[email protected]).
The mounting and operating instructions for the devices are included in
the scope of delivery. The latest documentation is available on our website
at www.samson.de > Service & Support > Downloads > Documentation.
Denition of signal words
Hazardous situations which, if not avoided,
will result in death or serious injury
Hazardous situations which, if not avoided,
could result in death or serious injury
Property damage message or malfunction
Additional information
Recommended action
DANGER
!
WARNING
!
NOTICE
!
Note
Tip
2 EB 8097 EN

Contents
EB 8097 EN 3
1 General safety instructions.............................................................................4
2 Design and principle of operation ..................................................................6
3 Assembling valve and actuator ......................................................................9
3.1 Assembly and adjustment ...............................................................................9
3.2 Option of preloading springs for "actuator stem extends"................................10
3.3 Different rated travels of valve and actuator ...................................................10
4 Installation..................................................................................................11
4.1 Notes on installation ....................................................................................11
4.2 Signal pressure line ......................................................................................11
5 Operation...................................................................................................11
6 Maintenance ...............................................................................................12
6.1 Replacing sealing parts and plug ..................................................................12
7 Description of nameplates............................................................................14
8 Inquiries .....................................................................................................15

4 EB 8097 EN
General safety instructions
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 ex-
posed to any danger. All safety instructions and warnings given in these
mounting and operating instructions, particularly those concerning installa-
tion, start-up and maintenance, must be strictly observed.
−The control valves comply with the requirements of the European Pressure
Equipment Directive 2014/68/EU. Valves with a CE marking have a
declaration of conformity which includes information about the applied
conformity assessment procedure.
The declaration of conformity can be viewed and downloaded at
http://www.samson.de.
−To ensure appropriate use, only use the valve in applications where the op-
erating pressure and temperatures do not exceed the specications used
for sizing the valve at the ordering stage. The manufacturer does not as-
sume any responsibility for damage caused by external forces or any other
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.
−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 as
well as the control signal are disconnected to prevent any hazards caused
by moving parts.
−Be particularly careful if the actuator springs are preloaded. Such actua-
tors are labeled correspondingly and can also be identied by three long
bolts protruding from the bottom of the actuator. Before starting any work
on the valve, relieve the compression from the preloaded springs.

EB 8097 EN 5
General safety instructions
According to the ignition risk assessment performed in accordance with EN13463-1:2009,
section 5.2, the non-electrical control valves do not have their own potential ignition source
even in the rare incident of an operating fault. As a result, they do not fall within the scope of
Directive 2014/34/EU.
ÎFor connection to the equipotential bonding system, observe the requirements specied in
section 6.4 of EN60079-14 (VDE0165 Part 1).

6 EB 8097 EN
Design and principle of operation
2 Design and principle of oper-
ation
The Type3347 Angle Valve can be com-
bined with either a Type3271 Pneumatic
Actuator or a Type3277 Pneumatic Actuator
with integral positioner attachment.
The standard valve body is designed for
welding into pipelines. Other versions can
be equipped with threaded or anged ends,
or clamp connections.
The control valve is tted with an easily de-
tachable clamp connection between valve
body and bonnet. The body free of dead
space is suitable for CIP (Cleaning-In-Place).
The control valves are mainly designed for
use as control or on/off valves in the food
industry.
The medium ows through the valve in the
direction indicated by the arrow. The plug
(3) is moved by changing the signal pressure
acting on the diaphragm of the actuator.
The plug stem (6) with plug (3) and actuator
stem (8.1) are connected by the stem con-
nector (7) and sealed by a PTFE seals (5.1
and 5.3).
In the special version with steam line connec-
tion, an additional spring-loaded PTFE ring
packing (4.2) is used. In this case, the plug
stem can be cleaned through the connection
of a steam line.
Fail-safe position
Depending on how the compression
springs(8.3) are arranged in the actuator,
the valve has two different fail-safe positions:
−Actuator stem extends: when the signal
pressure is reduced or the air supply
fails, the springs move the actuator stem
downward and close the valve.
The valve opens when the signal pressure
is increased enough to overcome the
force exerted by the springs.
−Actuator stem retracts: when the signal
pressure is reduced or the air supply
fails, the springs move the actuator stem
upward and open the valve.
The valve closes when the signal pressure
is increased enough to overcome the
force exerted by the springs.
Legend for Fig.1
1 Valve body
1.1 Centering ring
1.2 Body gasket
1.3 Compensating ring
3 Plug
4.1 Spring (special version)
4.2 Packing (special version)
4.3 Washers (special version)
5 Valve bonnet
5.1 Stem seal
5.2 Body and stem seal
5.3 Wiper ring
5.4 Clamp
5.5 Travel indicator scale
6 Plug stem
6.1 Stem connector nut
6.2 Lock nut
7 Stem connector
8 Actuator
8.1 Actuator stem
8.2 Ring nut
8.3 Compression springs
9Signal pressure
connection
10 Compression-type tting

EB 8097 EN 7
Design and principle of operation
6.1
6.2
6
1.3
8
8.3
8.2
8.1
5.5
7
5
5.3
5.4
5.2
3
1
9
8
8.1
5
8.2
10
4.2
5.1
5.4
1.2
1.1
4.3
6.2
6
5.3
4.1
4.3
3
1
Special version with steam line connection
Version with cast body
Type3277 ActuatorType3271 Actuator
Fig.1: Sectional drawings

8 EB 8097 EN
Design and principle of operation
Compliance
The Type3347 Valve bears the EAC mark of
conformity:

EB 8097 EN 9
Assembling valve and actuator
3 Assembling valve and actua-
tor
The basic pneumatic actuator can be re-
placed by a pneumatic actuator with addi-
tional handwheel or by an electric actuator.
The standard pneumatic actuator can be re-
placed by a smaller or larger actuator for all
nominal valve sizes.
If the travel range of the actuator is larger
than the travel of the valve, the springs in the
actuator are preloaded by SAMSON so that
the travel ranges match.
3.1 Assembly and adjustment
Proceed as follows if the valve and actuator
have not been assembled by SAMSON or if
the actuator is to be replaced by an actuator
of another type or size:
1. Loosen the lock nut (6.2) and stem con-
nector nut (6.1) on the valve. Firmly
press the plug together with the plug
stem into the seat. Thread down the lock
nut and stem connector nut.
2. Remove the clamps of the stem connector
(7) and the ring nut (8.2) from the actua-
tor (8).
3. Slide the ring nut over the plug stem.
4. Place the actuator onto the valve bonnet
(5) and secure it with the ring nut (8.2).
5. Read the bench range (e.g.0.2 to 1bar)
and the actuator's fail-safe action (e.g.
"actuator stem extends") from the actua-
tor's nameplate.
The fail-safe action "actuator stem ex-
tends" or "actuator stem retracts" is
marked by FA or FE on the Type3271
Actuator, and by a corresponding sym-
bol on the nameplate of the Type3277
Actuator.
The lower value corresponds to the lower
bench range value to be adjusted,
whereas the upper value corresponds the
upper bench range value.
During assembly, make sure that the stem
seal (5.1) is not damaged.
The maximum possible actuator travel must
not exceed the maximum permissible valve
travel (see adhesive label on the yoke).
6. For actuators with "actuator stem ex-
tends" fail-safe action, apply a signal
pressure that corresponds to the lower
bench range value (e.g. 0.2 or 0.4bar)
to the connection on the bottom dia-
phragm chamber.
For actuators with "actuator stem re-
tracts" fail-safe action, apply a signal
pressure that corresponds to the upper
bench range value (e.g. 1bar) to the
connection on the top diaphragm cham-
ber.
7. Screw on the stem connector nut (6.1) by
hand until it touches the actuator stem
(8.1). Turn it a further ¼turn and secure
this position with the lock nut (6.2)
8. Position clamps of the stem connector (7)
and screw them tight.
NOTICE
!

10 EB 8097 EN
Assembling valve and actuator
9. Align travel indicator scale (5.5) with the
tip of the stem connector; for actuators
with fail-safe action "actuator stem ex-
tends" align it with lower marking (valve
closed) and for actuators with fail-safe
action "actuator stem retracts" align it
with top marking (valve open).
Note on removing an actuator
When removing an actuator with "stem ex-
tends" fail-safe action from a valve and es-
pecially an actuator with preloaded springs,
apply a signal pressure that is slightly higher
than the lower bench range value (see actu-
ator nameplate) to the lower signal pressure
connection to allow the ring nut (8) to be
loosened.
3.2 Option of preloading
springs for "actuator stem
extends"
To achieve a greater positioning force, the
springs of the actuators can be preloaded by
up to 25% of their travel or their bench
range.
When a preload of, e.g. 0.1bar, is desired
for a bench range of0.2 to 1bar, the lower
bench range value is shifted by 0.1bar to
0.3bar (0.1bar correspond to a preload of
12.5%).
When adjusting the valve, set the lower
bench range value to 0.3bar. Write the new
bench range with preloaded springs of 0.3
to 1.1bar on the nameplate.
3.3 Different rated travels of
valve and actuator
Actuators that have already been preloaded
by the manufacturer without mounting the
valve are labeled correspondingly. Addition-
ally, they can be identied by three longer
bolts with nuts protruding from the bottom
diaphragm case.
Always use actuators with preloaded springs
when the valve's rated travel is smaller than
the rated travel of the actuator.
GEFAHR
!WARNING !
NOTICE
!

EB 8097 EN 11
Installation
4 Installation
4.1 Notes on installation
−The valve must be installed in the upright
position with the actuator on top.
For valves with welding ends, after loosening
the clamp (5.4), remove the entire valve con-
struction from the valve body before welding
it into the pipeline.
−Make sure the valves are installed free of
stress. Check to ensure the plug stem
moves smoothly.
−Flush the pipeline thoroughly before in-
stalling the valve.
−If the valve bonnet is designed for con-
nection to a steam line, connect the com-
pression-type ttings to the steam supply
line.
A pressure in the steam line connection
(steam or sterile uid) that is higher than the
pressure in the valve itself may affect the
process medium inside the valve due to it be
mixed with the steam (or sterile uid).
Observe the relevant hygiene regulations.
For compliance with 3-A regulations, a
gasket according to the recommendations of
the 3-ASanitary Standards Inc.
(uBulletin2011-3 at
uhttp://www.3-a.org) is required for a
Type3347 Valve with threaded connections
according to DIN11851/DIN11887.
4.2 Signal pressure line
Connect the signal pressure line for valves
with actuator with fail-safe action "actuator
stem extends" to the connection on the bot-
tom diaphragm case, and for valves with ac-
tuator with fail-safe action "actuator stem re-
tracts" to the connection on the top dia-
phragm case.
In the Type3277 Actuator, the lower signal
pressure connection is located at the side of
the yoke under the bottom diaphragm case.
5 Operation
The actuator's direction of action can be re-
versed, if required. Refer to the mounting
and operating instructions of the pneumatic
actuator:
uEB8310-X for Type3271 and Type3277
NOTICE
!
NOTICE
!
Note

12 EB 8097 EN
Maintenance
6 Maintenance
If the valve leaks, the wiper (5.3), steam seal
(5.1), or PTFE V-ring packing (4.2) (in the
version with steam line connection) might be
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.
We recommend removing the parts, cleaning
them, and, if necessary, replacing them with
new ones.
−Before performing any work on the control
valve, make sure the relevant plant section
has been depressurized and, depending
on the process medium, drained as well.
−When used at high temperatures, allow the
plant section to cool down to ambient tem-
perature.
−As valves are not free of cavities, remem-
ber that residual process medium might still
be contained in the valve. We recommend
removing the valve from the pipeline or the
entire valve construction when the valve is
welded into the pipeline.
−Before starting any work on the valve
body, disconnect the signal pressure and
remove the signal pressure line as well as
the actuator.
−During disassembly or assembly of the
valve, make sure that the stem seal (5.1) is
not damaged. The plug must not be moved
beyond the valve travel.
6.1 Replacing sealing parts
and plug
Before starting any work on the valve body,
remove the actuator from the valve.
1. Apply a signal pressure that is higher
than the lower bench range value to the
actuator (see nameplate).
2. Remove the stem connector clamps (7)
between the actuator stem and the plug
stem and unscrew the ring nut (8.2).
3. Lift the actuator off the valve.
4. Remove nuts (6.1 and 6.2).
5. Remove the clamp (5.4). Remove the
valve bonnet (5) together with plug (3)
and centering ring (1.1).
6. Pull the plug out of the valve bonnet.
Make sure that the stem seal (5.1) is not
damaged.
7. Use a suitable tool to force out damaged
parts, e.g. wiper (5.3) and stem seal
(5.1).
In version with steam line connection, al-
so remove packing (4.2), washer (4.3),
and spring (4.1). Clean the packing
chamber.
8. Check the surface of the plug stem to en-
sure it is free of score marks and still has
a mirror nish. Repolish the surface with-
out any aws to ensure the stem seal
cannot get damaged.
9. Apply a suitable lubricant to the new
parts and plug stem.
GEFAHR
!WARNING !
NOTICE
!

EB 8097 EN 13
Maintenance
Contact your nearest SAMSON subsidi-
ary or the SAMSON After-sales Service
department for information on suitable
lubricants.
10. Place the stem seal initially in the oppo-
site direction with the lip facing toward
the thread end over the plug stem to
stretch the lip of the stem seal slightly.
Carefully pull the stem seal off again.
11. Slide a new centering ring (1.1) with
gasket (1.2) over the plug stem (not nec-
essary for the bar stock body version).
12. Carefully slide the stem seal, centering it,
over the thread end of the plug stem. The
stem seal must t tightly, but slide easily
over the plug stem.
13. Insert the plug stem with stem seal and
centering ring (1.1) into the valve bon-
net.
14. Push the wiper (5.3) over the plug stem
into the valve bonnet.
15. Carefully place the valve bonnet onto the
valve body.
16. Apply a suitable lubricant to the clamps
(5.4) and the anges of the valve bonnet
and valve body.
17. Place the clamp in position and tighten
the clamp screw.
18. Hit the clamp lightly with a plastic ham-
mer and tighten the clamp screw again.
Repeat this procedure several times until
all parts t properly to achieve a leak-
tight body.
If the weight of the bonnet in the version
with steam line connection is too light to
put the clamp back on, slightly compress
the packing springs over the bonnet be-
forehand.
19. Screw the lock nut (6.2) and stem con-
nector nut (6.1) onto the plug stem (6).
20. Mount the actuator and adjust the upper
and lower bench range values as de-
scribed in section3.1.

14 EB 8097 EN
Description of nameplates
7 Description of nameplates
SAMSON 3347
Made in France
0062
DN
Pmax20˚C=
K
VS
Serial-No.
Tmax=
1
3
10
2
45
67
89
1 Type designation with revision index
2 Compliance with food industry requirements, if applicable
3 PED compliance, if applicable
4 Nominal size
5 Body material
6 Maximum pressure (bar or psi)
7 Maximum operating temperature (°C or °F)
8 Valve ow coefcient according to DIN or ANSI:
%= equal percentage or Lin= linear
9Serial number
10 Year of manufacture
ÎActuator nameplate: see the associated actuator documentation.

EB 8097 EN 15
Inquiries
8 Inquiries
Please submit the following details:
−Type designation and serial number
−Version and nominal size of the valve
−Pressure and temperature of the process
medium
−Flow rate in m³/h
−Bench range (spring range) of actuator,
e.g. 0.2 to 1bar
−Installation drawing
Refer to Data Sheet uT8097 for dimen-
sions and weights.
Note

2018-11-30 · English
SAMSON AKTIENGESELLSCHAFT
Weismüllerstraße 3 · 60314 Frankfurt am Main, Germany
Phone: [phone] · Fax: [phone]
[email protected] · www.samson.de
EB 8097 EN