Samson 3349 Service manual

Mounting and
Operating Instructions
EB 8048-2 EN
Edition February 2014
Type3349‑1 and Type3349‑7
Pneumatic Control Valves
Type3349 Aseptic Angle Valve
with USP-VI diaphragm
Type 3349-7 Control Valve with
Type 3730 Electropneumatic Positioner
Type 3349 Aseptic Angle Valve

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 seri-
ous injury
NOTICE
Property damage message or mal-
function
Note:
Additional information
Tip:
Recommended action

2 EB 8048-2 EN

Contents
EB 8048-2 EN 3
1 General safety instructions.............................................................................4
2 Process medium and scope of application.......................................................5
2.1 Transportation and storage.............................................................................5
3 Design and principle of operation ..................................................................6
4 Connection between valve and actuator .........................................................8
4.1 Assembly and adjustment ...............................................................................8
4.2 Option of preloading springs for "actuator stem extends" fail-safe action ...........9
5 Installation..................................................................................................10
5.1 Signal pressure line......................................................................................10
6 Operation...................................................................................................11
6.1 Start-up.......................................................................................................11
7 Maintenance ...............................................................................................11
7.1 Replacing sealing parts and plug ..................................................................12
8 Nameplates ................................................................................................14
9 Customer service.........................................................................................15
Refer to Data Sheet uT8048-2 EN for dimensions and weights of Type3349-1/-7
Control Valves as well as Type3349 Aseptic Angle Valve.
Refer to the SAMSON website (www.samson.de) for more product documenta-
tion.

4 EB 8048-2 EN
General safety instructions
1 General safety instructions
−The valve must be mounted, started up or serviced by fully trained and qual-
ied personnel only; the accepted industry codes and practices are to be ob-
served. Make sure employees or third persons are not exposed to any dan-
ger.
−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.
−According to these mounting and operating instructions, trained personnel
refers to individuals who are able to judge the work they are assigned to
and recognize possible dangers due to their specialized training, their
knowledge and experience as well as their knowledge of the applicable
standards.
−The valves comply with the requirements of the European Pressure Equipment
Directive 97/23/EC. The declaration of conformity issued for a valve bear-
ing the CE marking includes information on the applied conformity assess-
ment procedure. The declaration of conformity is available on request.
−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 assume 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, op-
erating pressure or by moving parts are to be prevented by taking appropri-
ate precautions.
−Proper transport, storage, installation, operation and maintenance are as-
sumed.
Note: Non-electric actuators and control valve versions do not have their own potential
ignition source according to the ignition risk assessment stipulated in EN13463-1: 2009,
section 5.2, even in the rare incident of an operating fault. Therefore, they do not fall within
the scope of Directive 94/9/EC.
For connection to the equipotential bonding system, observe the requirements specied in
section 6.3 of EN60079-14: 2011 (VDE0165 Part 1).

EB 8048-2 EN 5
Process medium and scope of application
2 Process medium and scope of application
Control valve for aseptic applications in the food and pharmaceutical industries according to
DIN or ANSI standards. With PTFE diaphragm according to USP Standard Class VI for the
US pharmaceutical industry.
Standard version DN 15 to 50 ∙NPS ½ to 2
Micro-ow valve DN 6 to 25 ∙NPS ¼ to 1
Maximum pressure 10 bar ∙150 psi
Temperature range 0 to 160 °C ∙ 32 to 320°F
2.1 Transportation and storage
It is essential that you observe the instructions on the correct handling of control valves during
transportation, storage and hoisting.
NOTICE
Do not attach any lifting equipment, slings or supports to mounting parts, such as ac-
tuator, positioner or pressure lines.
Parts may get damaged.
Fasten the lifting sling only to the valve body or valve bonnet.
−Protect the valve against adverse inuences, such as dirt, moisture and temperatures out-
side the specied temperature range from 0 to 160°C (32 to 320°F).
−Leave the control valves in their transport container or on the pallet for as long as possi-
ble. Store the valves in a dry location until they are installed.
−Protect the valve, particularly the actuator stem, against impacts and vibration. Immedi-
ately remove any damage caused to the corrosion protection (paint, coating, oiled sur-
face).
−Never stand, walk or work underneath an overhead load. Before lifting a valve, check its
weight based on the documentation provided by SAMSON.
−Only use lifting equipment whose safe working load(SWL) is sufcient for the valves to
be lifted. Carefully lift the valve at rst to check that the hoisting straps or chains are
properly attached and that the valve is properly balanced.
−Lift the control valve in the same orientation that it will be installed in.
−Do not remove the protective caps from the valve ports until immediately before installing
the valve into the pipeline.

6 EB 8048-2 EN
Design and principle of operation
3 Design and principle of op-
eration
See Fig.1 on page 7.
The Type 3349 Angle Valve can be com-
bined with either a Type3271 Pneumatic
Actuator or a Type3277 Pneumatic Actuator
with integral positioner attachment.
Version
Angle valve made of bar stock with anged-
on valve bonnet, with or without packing.
Sealed by PTFE diaphragm according to USP
Standard Class VI for the US pharmaceutical
industry.
The standard valve body is equipped with
welding ends (DIN11866) for welding into
pipelines. Other versions are equipped with
threaded or anged ends, or clamp connec-
tions.
The valve body is designed without cavities,
allowing it to be cleaned or sterilized prior
to the production process according to the
CIP (clean-in-place) or SIP (sterilization-in-
place) method.
In the version with optional packing (4.2),
the pressure can be monitored at the test
connection (4.4).
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) is connected to the actua-
tor stem (8.1) using the stem connector (7)
with a stem connector nut (6.1) and lock nut
(6.2). In the micro-ow valve version, the
plug stem (6) and actuator stem (8.1) are
connected directly by the stem connector (7).
The plug stem is sealed by the diaphragm
(6.3) and additionally by the backup pack-
ing (4) if this option is selected.
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 actua-
tor stem downwards and close the valve.
The valve opens when the signal pressure is
increased enough to overcome the force ex-
erted by the springs.
Actuator stem retracts
When the signal pressure is reduced or the
air supply fails, the springs move the actua-
tor stem upwards and open the valve.
The valve closes when the signal pressure is
increased enough to overcome the force ex-
erted by the springs.

EB 8048-2 EN 7
Design and principle of operation
Fig.1: Functional diagram
Valve with Type 3271 Actuator Type 3277 Actuator
1 Valve body
3 Plug
4 Packing
4.1 Spring
4.2 Packing
4.3 Washer
4.4 Test connection (screw/
moveable discharge pipe)
5 Valve bonnet
5.1 Guide bushing
5.2 Threaded bushing
5.3 Yoke
5.4 Screws
5.5 Travel indicator scale
5.6 Screws
10
8
8.3
9
5.5
5.3
5.2
5.6
4.
4
3.3
6.4
1
5
6.2
6.1
7
8.1
8.2
8.4
6 Plug stem
6.1 Stem connector nut
6.2 Lock nut
6.3 USP-VI diaphragm
6.4 Grub screw
7 Stem connector
8 Actuator
8.1 Actuator stem
8.2 Ring nut
8.3 Compression spring
8.4 Rolling diaphragm
9 Loading pressure connection
10 Vent screw
5.2
4
4.2
4.3
6.4
6.3
3
4.4
4.1
Valve with optional packing
9
10
Micro-ow valve, without actuator
5.6
4.4
6

8 EB 8048-2 EN
Connection between valve and actuator
4 Connection between valve
and actuator
Note:
Pay particular attention to correct hy-
giene and ensure that control valves
for food and pharmaceutical indus-
tries are kept absolutely clean.
Only use a lubricant suitable for
foodstuffs for any parts to be lubri-
cated.
Contact your nearest SAMSON sub-
sidiary or the SAMSON After-sales
Service department for information
on suitable lubricants.
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 the manufacturer
so that the travel ranges match.
4.1 Assembly and adjustment
See Fig.1 on page 7.
Proceed as follows if the valve and actuator
have not been assembled by the manufactur-
er or if the actuator is to be replaced by an
actuator of another type or size:
NOTICE
The plug stem can turn on tightening
the lock nut
The diaphragm may be damaged.
In this case, on undoing or tightening
the lock nut (6.2), place a wrench on
the stem connector nut (6.1) to hold
the plug stem stationary.
Fig.2: Mounting the actuator (standard
version)
Note:
In the micro-ow valve version, the
plug stem (6) and actuator stem (8.1)
are connected directly by the stem
connector (7).
1. Unscrew 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 stem
connector nut to the dimension X and
tighten the lock nut.

X

6.2
6.1

EB 8048-2 EN 9
Connection between valve and actuator
Valve/nominal size Dimension
X
Standard valve/Micro-ow valve
DN 6 to 25 · NPS ¼ to 1 67.5 mm
DN 32 to 50 · NPS 1¼ to 2 75 mm
2. Remove the clamps of the stem connector
(7) and ring nut (8.2) from the actuator.
Slide the ring nut over the plug stem.
3. Read the bench range (e.g.0.2 to 1bar
or 0.6 to 1bar) and the actuator's fail-
safe action (e.g. actuator stem extends)
from the actuator's nameplate.
The fail-safe action "actuator stem extends"
or "actuator stem retracts" is marked by FA
or FE on the Type3271 Actuator, and by a
corresponding symbol 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.
4. 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 0.6bar)
to the connection on the bottom dia-
phragm chamber. For actuators with "ac-
tuator stem retracts" fail-safe action, ap-
ply a signal pressure that corresponds to
the upper bench range value (e.g. 1bar)
to the top diaphragm chamber connec-
tion.
5. Place the actuator onto the valve bonnet
(5) and secure it with the ring nut (8.2).
6. Position clamps of the stem connector (7)
and screw them tight. Align travel indica-
tor scale (5.5) with the tip of the stem
connector; for actuators with "actuator
stem extends" fail-safe action align it
with lower marking (valve closed) and
for actuators with "actuator stem retracts"
fail-safe action align it with top marking
(valve open).
Note:
When removing an actuator with
"actuator stem extends" fail-safe ac-
tion and especially an actuator with
preloaded springs, apply a signal
pressure that is slightly higher than
the lower bench range value (see ac-
tuator nameplate) to the bottom load-
ing pressure connection so that the
ring nut (8.2) can be unscrewed.
4.2 Option of preloading
springs for "actuator stem
extends" fail-safe action
To achieve a greater positioning force, the
springs of the actuators can be preloaded by
up to 12.5% of their travel or bench range
(with 350 cm² up to 25% of their travel or
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, now apply a pres-
sure of 0.3bar as the lower bench range
value. Write the new bench range with pre-
loaded springs of0.3 to 1.1bar on the
nameplate.


10 EB 8048-2 EN
Installation
Note:
The springs have already been pre-
loaded by 50% for valves in nominal
sizes DN15 to 25 with 7.5 mm trav-
el, 0.6 to 1bar bench range and
"actuator stem extends” fail-safe ac-
tion.
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.
NOTICE
The spring energy can suddenly be
released while dismantling the actua-
tor.
Risk of personal injury!
First relieve the compression from the
preloaded springs by unthreading
the nuts on the long bolts a few turns,
alternating between them to gradual-
ly release the tension.
5 Installation
See Fig.1 on page 7.
Note:
Pay particular attention to correct hy-
giene and ensure that control valves
for food and pharmaceutical indus-
tries are kept absolutely clean.
Only use a lubricant suitable for
foodstuffs for any parts to be lubri-
cated.
Contact your nearest SAMSON sub-
sidiary or the SAMSON After-sales
Service department for information
on suitable lubricants.
Install the control valve with the actuator in
the upright position.
Note:
In the valve version with welding
ends, after undoing the four screws
(5.4), remove the entire valve assem-
bly from the valve body before weld-
ing it into the pipeline.
Flush and clean the pipeline thoroughly be-
fore installing the valve.
Make sure the valve is installed free of stress.
If necessary, support the pipelines near the
connections.
Note
Do not attach supports directly to the
valve or actuator.
5.1 Signal pressure line
Connect the signal pressure line for valves
with actuator with "actuator stem extends"
fail-safe action to the connection on the bot-
tom diaphragm case and with “actuator stem
retracts” fail-safe action to the connection on
the top diaphragm case.
In the Type3277 Actuator, the bottom load-
ing pressure connection (9) is located at the
side of the yoke under the bottom dia-
phragm case.



