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

8.3

5.5

5.3

5.2

5.6

3.3

6.4

6.2

6.1

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

4.2

4.3

6.4

6.3

4.4

4.1

Valve with optional packing

Micro-ow valve, without actuator

5.6

4.4

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.



6.2

6.1

EB 8048-2 EN 9

Connection between valve and actuator

Valve/nominal size Dimension

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.



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