Samson 3321CT Service manual

Translation of original instructions
EB 8115 EN
Edition June 2022
Type3321CT Valve · DIN and ANSI versions
For combining with actuators, e.g. Type3379 Pneumatic Actuator

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
EB 8115 EN
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. The images shown in
these instructions are for illustration purposes only. The actual product may vary.
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
([e-mail]).
Documents relating to the device, such as the mounting and operating
instructions, are available on our website at www.samsongroup.com >
Service & Support > Downloads > Documentation.

Contents
EB 8115 EN
1 Safety instructions and measures ................................................................1-1
1.1 Notes on possible severe personal injury ......................................................1-5
1.2 Notes on possible personal injury ................................................................1-5
1.3 Notes on possible property damage.............................................................1-7
2 Markings on the device ..............................................................................2-1
2.1 Valve nameplate .........................................................................................2-1
2.2 Actuator nameplate.....................................................................................2-1
3 Design and principle of operation ...............................................................3-1
3.1 Fail-safe action ...........................................................................................3-1
3.2 Additional ttings........................................................................................3-1
3.3 Technical data ............................................................................................3-3
4 Shipment and on-site transport ...................................................................4-1
4.1 Accepting the delivered goods .....................................................................4-1
4.2 Removing the packaging from the valve........................................................4-1
4.3 Transporting and lifting the valve..................................................................4-1
4.3.1 Transporting the valve .................................................................................4-2
4.3.2 Lifting the valve...........................................................................................4-2
4.4 Storing the valve.........................................................................................4-3
5 Installation.................................................................................................5-1
5.1 Installation conditions..................................................................................5-1
5.2 Preparation for installation...........................................................................5-2
5.3 Mounting the device....................................................................................5-3
5.3.1 Mounting the actuator onto the valve............................................................5-5
5.3.2 Installing the valve into the pipeline ..............................................................5-5
5.4 Testing the installed valve.............................................................................5-6
5.4.1 Leak test.....................................................................................................5-7
5.4.2 Travel motion..............................................................................................5-7
5.4.3 Fail-safe position.........................................................................................5-7
5.4.4 Pressure test................................................................................................5-7
6 Start-up .....................................................................................................6-1
7 Operation..................................................................................................7-1
8 Malfunctions ..............................................................................................8-1
8.1 Troubleshooting ..........................................................................................8-1
8.2 Emergency action .......................................................................................8-2
9 Servicing....................................................................................................9-1
9.1 Periodic testing ...........................................................................................9-3

Contents
EB 8115 EN
9.2 Preparing the valve for service work.............................................................9-3
9.3 Installing the valve after service work............................................................9-3
9.4 Service work...............................................................................................9-3
9.4.1 Replacing the gasket ...................................................................................9-5
9.4.2 Replacing the packing.................................................................................9-5
9.4.3 Replacing the seat and plug.........................................................................9-7
9.5 Ordering spare parts and operating supplies ................................................9-9
10 Decommissioning .....................................................................................10-1
11 Removal ..................................................................................................11-1
11.1 Removing the valve from the pipeline..........................................................11-1
12 Repairs ....................................................................................................12-1
12.1 Returning devices to SAMSON ..................................................................12-1
13 Disposal...................................................................................................13-1
14 Certicates...............................................................................................14-1
15 Annex......................................................................................................15-1
15.1 Tightening torques.....................................................................................15-1
15.1.1 Tightening torques to install the seat ...........................................................15-1
15.1.2 Tightening torques for connection of body and bonnet .................................15-1
15.1.3 Tightening torques for connection of plug stem and actuator stems................15-2
15.1.4 Tightening torques for connection of bonnet and Type3379 Actuator............15-2
15.2 Lubricants.................................................................................................15-3
15.2.1 Recommended lubricant ............................................................................15-3
15.2.2 Lubricant sorted by parts ...........................................................................15-3
15.3 Tools ........................................................................................................15-4
15.3.1 Seat wrenches ..........................................................................................15-4
15.3.2 Plug stem tool ...........................................................................................15-5
15.3.3 Packing extractor ......................................................................................15-5
15.4 Spare parts ..............................................................................................15-6
15.5 After-sales service.....................................................................................15-8

EB 8115 EN 1-1
Safety instructions and measures
1 Safety instructions and measures
Intended use
The SAMSON Type3321CT Globe Valve in combination with an actuator (e.g. Type3379
Pneumatic Actuator) is designed to regulate the ow rate, pressure or temperature of liq-
uids, gases or vapors.
The valve with its actuator is designed to operate under exactly dened conditions (e.g. oper-
ating pressure, process medium, temperature). Therefore, operators must ensure that the con-
trol valve is only used in operating conditions that meet the specications used for sizing the
valve at the ordering stage. In case operators intend to use the control valve in applications
or conditions other than those specied, contact SAMSON.
SAMSON does not assume any liability for damage resulting from the failure to use the de-
vice for its intended purpose or for damage caused by external forces or any other external
factors.
ÎRefer to the technical data and nameplate for limits and elds of application as well as
possible uses.
Reasonably foreseeable misuse
The control valve is not suitable for the following applications:
− Use outside the limits dened during sizing and by the technical data
− Use outside the limits dened by the valve accessories connected to the valve
Furthermore, the following activities do not comply with the intended use:
− Use of non-original spare parts
− Performing service and repair work not described
Qualications of operating personnel
The control valve must be mounted, started up, serviced and repaired by fully trained and
qualied personnel only; the accepted industry codes and practices must be observed. Ac-
cording 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 hazards due to
their specialized training, their knowledge and experience as well as their knowledge of the
applicable standards.
Explosion-protected versions of this device must be operated only by personnel who has un-
dergone special training or instructions or who is authorized to work on explosion-protected
devices in hazardous areas.

1-2 EB 8115 EN
Safety instructions and measures
Personal protective equipment
We recommend checking the hazards posed by the process medium being used (e.g.
uGESTIS (CLP) hazardous substances database). Depending on the process medium and/
or the activity, the protective equipment required includes:
− Protective clothing, gloves, eye protection and respiratory protection in applications with
hot, cold and/or corrosive media
− Wear hearing protection when working near the valve
− Hard hat
− Safety harness when working at height
− Safety footwear, ESD (electrostatic discharge) footwear, if necessary
ÎCheck with the plant operator for details on further protective equipment.
Revisions and other modications
Revisions, conversions or other modications of the product are not authorized by SAMSON.
They are performed at the user's own risk and may lead to safety hazards, for example. Fur-
thermore, the product may no longer meet the requirements for its intended use.
Safety features
The fail-safe position of the control valve upon air supply or control signal failure depends on
the actuator used (see associated actuator documentation). When the valve is combined with
a SAMSON Type3379 Pneumatic Actuator, the valve moves to a certain fail-safe position
(see the 'Design and principle of operation' section) upon supply air or control signal failure.
The fail-safe action of the actuator is the same as its direction of action and is specied on
the nameplate of SAMSON actuators.
Warning against residual hazards
To avoid personal injury or property damage, plant operators and operating personnel must
prevent hazards that could be caused in the control valve by the process medium, the operat-
ing pressure, the signal pressure or by moving parts by taking appropriate precautions. Plant
operators and operating personnel must observe all hazard statements, warning and caution
notes in these mounting and operating instructions.
Hazards resulting from the special working conditions at the installation site of the valve must
be identied in a risk assessment and prevented through the corresponding safety instruc-
tions drawn up by the operator.

EB 8115 EN 1-3
Safety instructions and measures
Responsibilities of the operator
Operators are responsible for proper use and compliance with the safety regulations. Opera-
tors are obliged to provide these mounting and operating instructions as well as the refer-
enced documents to the operating personnel and to instruct them in proper operation. Fur-
thermore, operators must ensure that operating personnel or third parties are not exposed to
any danger.
Operators are additionally responsible for ensuring that the limits for the product dened in
the technical data are observed. This also applies to the start-up and shutdown procedures.
Start-up and shutdown procedures fall within the scope of the operator's duties and, as such,
are not part of these mounting and operating instructions. SAMSON is unable to make any
statements about these procedures since the operative details (e.g. differential pressures and
temperatures) vary in each individual case and are only known to the operator.
Responsibilities of operating personnel
Operating personnel must read and understand these mounting and operating instructions as
well as the referenced documents and observe the specied hazard statements, warnings
and caution notes. Furthermore, operating personnel must be familiar with the applicable
health, safety and accident prevention regulations and comply with them.
Referenced standards, directives and regulations
The control valves comply with the requirements of the European Pressure Equipment Direc-
tive 2014/68/EU and the Machinery Directive 2006/42/EC. Valves with a CE marking
have a declaration of conformity which includes information about the applied conformity
assessment procedure. The 'Certicates' section contains this declaration of conformity.
According to the ignition hazard assessment performed in accordance with Clause5.2 of
ISO80079-36, 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
Clause6.4 of EN60079-14 (VDE0165-1).
Referenced documentation
The following documents apply in addition to these mounting and operating instructions:
− Mounting and operating instructions for the mounted actuator, e.g. uEB8315 for
SAMSON's Type3379 Pneumatic Actuator
− Mounting and operating instructions for mounted valve accessories (positioner, solenoid
valve etc.)

1-4 EB 8115 EN
Safety instructions and measures
− When a substance is used in the device, which is listed as being a substance of very high
concern on the candidate list of the REACH regulation:
Information on safe use of the part affected
uwww.samsongroup.com > About SAMSON > Material Compliance > REACH
If a device contains a substance which is listed as being a substance of very high concern
on the candidate list of the REACH regulation, this circumstance is indicated on the SAM-
SON delivery note.

EB 8115 EN 1-5
Safety instructions and measures
1.1 Notes on possible severe personal injury
DANGER
!
Risk of bursting in pressure equipment.
Valves and pipelines are pressure equipment. Impermissible pressure or improper
opening can lead to valve components bursting.
ÎObserve the maximum permissible pressure for valve and plant.
ÎBefore starting any work on the control valve, depressurize all plant sections affect-
ed as well as the valve.
ÎDrain the process medium from all the plant sections concerned as well as the
valve.
1.2 Notes on possible personal injury
WARNING
!
Risk of burn injuries due to hot or cold components and pipelines.
Depending on the process medium, valve components and pipelines may get very hot
or cold and cause burn injuries.
ÎAllow components and pipelines to cool down or warm up to the ambient tempera-
ture.
ÎWear protective clothing and safety gloves.
Risk of hearing loss or deafness due to loud noise.
The noise emissions depend on the valve version, plant facilities and process medium.
ÎWear hearing protection when working near the valve.
Risk of personal injury due to exhaust air being vented.
While the valve is operating, air is vented from the actuator, for example, during
closed-loop operation or when the valve opens or closes.
ÎInstall the control valve in such a way that vent openings are not located at eye level
and the actuator does not vent at eye level in the work position.
ÎUse suitable silencers and vent plugs.
ÎWear eye protection when working in close proximity to the control valve.

1-6 EB 8115 EN
Safety instructions and measures
WARNING
!
Risk of personal injury due to preloaded springs.
Valves in combination with pneumatic actuators with preloaded springs are under ten-
sion.
ÎBefore starting any work on the actuator, relieve the compression from the preload-
ed springs (see associated actuator documentation).
Risk of personal injury due to residual process medium in the valve.
While working on the valve, residual medium can ow out of the valve and, depending
on its properties, cause personal injury, e.g. (chemical) burns.
ÎIf possible, drain the process medium from all the plant sections affected and the
valve.
ÎWear protective clothing, safety gloves, respiratory protection and eye protection.
Exposure to hazardous substances poses a serious risk to health.
Certain lubricants and cleaning agents are classied as hazardous substances. These
substances have a special label and a material safety data sheet (MSDS) issued by the
manufacturer.
ÎMake sure that an MSDS is available for any hazardous substance used. If neces-
sary, contact the manufacturer to obtain an MSDS.
ÎInform yourself about the hazardous substances and their correct handling.
Risk of personal injury through incorrect operation, use or installation as a result of
information on the valve being illegible.
Over time, markings, labels and nameplates on the valve may become covered with dirt
or become illegible in some other way. As a result, hazards may go unnoticed and the
necessary instructions not followed. There is a risk of personal injury.
ÎKeep all relevant markings and inscriptions on the device in a constantly legible
state.
ÎImmediately renew damaged, missing or incorrect nameplates or labels.

EB 8115 EN 1-7
Safety instructions and measures
1.3 Notes on possible property damage
NOTICE
!
Risk of valve damage due to contamination (e.g. solid particles) in the pipeline.
The plant operator is responsible for cleaning the pipelines in the plant.
ÎFlush the pipelines before start-up.
Risk of valve damage due to unsuitable medium properties.
The valve is designed for a process medium with dened properties.
ÎOnly use the process medium specied for sizing the equipment.
Risk of leakage and valve damage due to excessively high or low tightening torques.
Observe the specied torques when tightening control valve components. Excessive
tightening torques lead to parts wearing out more quickly. Parts that are too loose may
cause leakage.
ÎObserve the specied tightening torques (see 'Tightening torques' in Annex).
Risk of valve damage due to the use of unsuitable tools.
Certain tools are required to work on the valve.
ÎOnly use tools approved by SAMSON (see the 'Tools' section in Annex).
Risk of valve damage due to the use of unsuitable lubricants.
The lubricants to be used depend on the valve material. Unsuitable lubricants may cor-
rode and damage surfaces.
ÎOnly use lubricants approved by SAMSON (see the 'Lubricants' section in Annex).
Risk of the process medium being contaminated through the use of unsuitable lubri-
cants and/or contaminated tools and components.
ÎKeep the valve and the tools used free from solvents and grease.
ÎMake sure that only suitable lubricants are used.

1-8 EB 8115 EN

EB 8115 EN 2-1
Markings on the device
2 Markings on the device
2.1 Valve nameplate
6 7
12
14 15 16 17
1…5 9
20
Fig.2-1: Inscriptions on the valve nameplate
Item Inscription meaning
1…5 PED (Pressure Equipment Directive),
Article 4, paragraph 3
ID of the notied body, uid group and
category
6Type designation
7 Device index (2-digit number)
9Year of manufacture
12 Production number
14 Flow coefcient: KVS
15 Characteristic: % (equal percentage)
16 Seat-plug seal:
ME: metal
PK: soft seal with PEEK
17 Seat code (trim material):
00 (1.4404)
20 Country of origin
The nameplate is afxed to the ange of the
valve (see Fig.2-2).
Nameplate
Fig.2-2: Valve nameplate
2.2 Actuator nameplate
See associated actuator documentation.

2-2 EB 8115 EN

EB 8115 EN 3-1
Design and principle of operation
3 Design and principle of
operation
The single-seated Type3321CT Globe Valve
is preferably combined with a SAMSON
Type3379 Pneumatic Actuator.
The seat (2) and plug with plug stem (3) are
installed in the body (1). The plug stem has a
thread to screw it onto the actuator stem and
is sealed by the spring-loaded packing (8).
The process medium ows through the valve
in the direction indicated by the arrow in the
ow-to-open direction. The plug position de-
termines the cross-sectional area between
the seat and plug.
The position of the plug is changed by the
control signal acting on the actuator.
3.1 Fail-safe action
Depending on how the compression springs
are arranged in the actuator, the control
valve with the SAMSON Type3379 Pneu-
matic Actuator has one of two fail-safe posi-
tions that become effective when the supply
air fails:
− Actuator stem extends (FA)
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 over-
come the force exerted by the springs.
− Actuator stem retracts (FE)
When the signal pressure is reduced or
the air supply fails, the springs move the
actuator stem upwards and open the
valve. The valve closes when the signal
pressure is increased enough to over-
come the force exerted by the springs.
3.2 Additional ttings
Strainers
We recommend installing a SAMSON
strainer upstream of the valve. It prevents sol-
id particles in the process medium from
damaging the valve.
Bypass and shut-off valves
We recommend installing a shut-off valve
both upstream of the strainer and down-
stream of the valve and installing a bypass
line. The bypass ensures that the plant does
not need to be shut down for service and re-
pair work on the valve.

3-2 EB 8115 EN
Design and principle of operation
2
3
10
14
13
1
7
8
5
15
11
12
9
6
4
1Body
2 Seat
3 Plug
4Guide bushing
5Spring
6Washer
7Valve bonnet
8Packing
9Spacer
10 Screw
11 Retaining washer
12 Retaining ring
13 Gasket
(body gasket)
14 Flange
15 Centering pin
Fig.3-1: Type3321CT Valve, DN32 to 80

EB 8115 EN 3-3
Design and principle of operation
3.3 Technical data
The nameplates on the valve and actuator
provide information on the control valve ver-
sion. See the 'Markings on the device' sec-
tion.
More information is available in Data Sheet
uT8115.
Noise emissions
SAMSON is unable to make general state-
ments about noise emissions. The noise emis-
sions depend on the valve version, plant fa-
cilities and process medium.
Note
1Body
2 Seat
3 Plug
4Guide bushing
7Valve bonnet
8Packing
10 Screw
13 Body gasket
14 Flange
Fig.3-2: Type3321CT Valve,
DN15 to 25
2
3
10
14
13
4
1
8
7

3-4 EB 8115 EN
Design and principle of operation
Table 3-1: Technical data for Type3321CT
Valve size DN15 to 80 · NPS½ to 3
Pressure rating PN16 and 40 · Class150 and 300
Type of connection Flanges with raised face formB1 according to EN1092-1/RF
Seat-plug seal Metal or soft seal
Characteristic Equal percentage
Rangeability 50 :1
Permissible medium temperature
Standard version –10 to 220°C · 14 to 428°F
Leakage class according to IEC60534-4 or ANSI/FCI70-2
Metal seal IV
Soft seal VI
Conformity FDA compliance
Compliance with EC Directive 1935/2004
Table 3-2: Materials
Type3321CT Valve
Valve body Stainless steel 1.4408 · A351CF8M
Valve bonnet Stainless steel 1.4404 or 1.4408 · A182F316L or A351CF8M
Seat Stainless steel 1.4404 · A182F316L
Plug with plug stem Stainless steel 1.4404 · A182F316L
Plug seal Seal for soft-seated plug: PEEK
(certied according to FDA/Regulation (EC)1935/2004)
Guide bushing Nickel alloy
Packing V-ring packing: PTFE with carbon, spring: 1.4310
Body gasket Graphite seal on metal core
Type3379 Pneumatic Actuator
Housing and cover Stainless steel 1.4409 · A351CF3M
Actuator stem Stainless steel 1.4404 · A182F316L

EB 8115 EN 3-5
Design and principle of operation
Type3379 Pneumatic Actuator
Piston Glass-ber-reinforced polyamide
Stainless steel 1.4409 · A351CF3M1)
Dome (visual indica-
tor) Polycarbonate
Bearing Polymer
Spring Spring steel
Gasket NBR
1) For Ø150 piston
Type3724 Positioner
Housing and cover Stainless steel 1.4409 · A351CF3M
Transparent cover Polycarbonate
Table 3-3: Dimensions and weights
Table3-3.1: Type3321CT Valve
DN 15 20 25 32 40 50 65 80
NPS ½ ¾ 1 – 1½ 2 2½ 3
L
PN16/40 mm 130 150 160 180 200 230 290 310
Class150 in1) 7.25 7.25 7.25 –8.75 10 10.88 11.75
Class300 in1) 7.5 7.62 7.75 –9.25 10.5 11.5 12.5
H1 mm 102 114 147
in1) 4.02 – 4.49 5.78
H2 mm 44 72 98
in1) 1.73 –2.83 3.86
Weight kg 56711 12 16 28 32
lbs1) 15 18 20 – 35 44 32 82
1) ANSI specications

3-6 EB 8115 EN
Design and principle of operation
Table3-3.2: Type3379 Pneumatic Actuator
Piston diameter mm 63 90 150
Actuator area cm² 31 63 176
With
Type3724
Positioner
H mm 285 310
H31) mm 150
A1 mm 30
ØD1 mm 108
ØD2 mm 69 96 160
Weight
kg
(ap-
prox.)
3.7 4.9 10.7
Without
positioner
H mm 195 215
H31) mm 150
A1 mm 20
ØD1 mm 69 96 160
Weight
kg
(ap-
prox.)
1.8 3.1 8.9
1) Minimum clearance required to remove the actuator