EB 1015 EN
Translation of original instructions

Type 2 N and Type 2 NI Strainers

Edition April 2021

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.
Î For the safe and proper use of these instructions, read them carefully and keep them forlater reference.
Î If you have any questions about these instructions, contact SAMSON‘s After-sales Service(aftersalesservice@samson.de).

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.samsongroup.com > Service & Support > Downloads >Documentation.

Definition of signal words! DANGER
Hazardous situations which, if not avoided,
will result in death or serious injury! WARNING
Hazardous situations which, if not avoided,
could result in death or serious injury

2! NOTICE
Property damage message or malfunction
Note
Additional information
Tip
Recommended action

EB 1015 EN

Contents

1

Safety instructions and measures....................................................................5

1.1

Notes on possible severe personal injury..........................................................7

1.2

Notes on possible personal injury....................................................................8

1.3

Notes on possible property damage.................................................................92

Markings on the device................................................................................10

2.1

Marking on the strainer body.........................................................................10

2.2

Material numbers..........................................................................................10

3

Design and principle of operation.................................................................11

3.1

Technical data..............................................................................................11

4

Measures for preparation.............................................................................16

4.1

Unpacking...................................................................................................16

4.2
4.2.1
4.2.2

Transporting and lifting.................................................................................16
Transporting.................................................................................................17
Lifting...........................................................................................................17

4.3

Storage........................................................................................................19

4.4

Preparation for installation.............................................................................19

5

Mounting and start-up..................................................................................20

5.1

Mounting positions........................................................................................20

5.2

Additional fittings..........................................................................................21

5.3

Installing the strainer.....................................................................................22

5.4
5.4.1
5.4.2

Start-up........................................................................................................22
Gases and liquids.........................................................................................23
Steam..........................................................................................................23

6

Servicing.....................................................................................................24

6.1

Cleaning or exchanging the filter...................................................................25

6.2

Preparation for return shipment......................................................................26

6.3

Ordering spare parts and operating supplies..................................................26

7

Malfunctions................................................................................................26

8

Decommissioning and removal.....................................................................28

8.1

Decommissioning..........................................................................................28

8.2

Disposal.......................................................................................................28

EB 1015 EN

3

Contents

9

Annex.........................................................................................................29

9.1

After-sales service.........................................................................................29

9.2

Spare parts, tightening torques and lubricant..................................................29

9.3

Certificates...................................................................................................30

4

EB 1015 EN

Safety instructions and measures

1 Safety instructions and measures
Intended use
The SAMSON Type 2 N and Type 2 NI Strainers are used to hold back large particles
contained in liquids, gases and vapors. The strainers are designed to operate under exactly
defined conditions (e.g. operating pressure, process medium, temperature). Therefore,
operators must ensure that the strainers are only used in operating conditions that meet the
specifications used for sizing the strainers at the ordering stage. In case operators intend touse the strainers in other applications or conditions than specified, contact SAMSON.
SAMSON does not assume any liability for damage resulting from the failure to use thedevice for its intended purpose or for damage caused by external forces or any otherexternal factors.
Î Refer to the technical data and nameplate for limits and fields of application as well as
possible uses.
Reasonably foreseeable misuse
The strainers are not suitable for the following applications:− Use outside the limits defined during sizing and by the technical data
Furthermore, the following activities do not comply with the intended use:
− Use of non-original spare parts− Performing service and repair work not described in these instructions
Qualifications of operating personnel
The strainer must be mounted, started up, serviced and repaired by fully trained andqualified personnel only; the accepted industry codes and practices are to be observed.
According to these mounting and operating instructions, trained personnel refers toindividuals 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 theirknowledge of the applicable standards.

EB 1015 EN

5

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).
Î Provide protective equipment (e.g. safety gloves, eye protection) appropriate for the process medium used.
Î Wear hearing protection when working near the strainer.
Î Check with the plant operator for details on further protective equipment.
Revisions and other modifications
Revisions, conversions or other modifications 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. Furthermore, the product may no longer meet the requirements for its intended use.
Warning against residual hazards
To avoid personal injury or property damage, operators and operating personnel must
prevent hazards that could be caused in the strainer by the process medium and operatingpressure by taking appropriate precautions. They must observe all hazard statements,
warning and caution notes in these mounting and operating instructions, especially for
installation, start-up and service work.
We also recommend checking the hazards posed by the process medium being used (e.g.
u GESTIS (CLP) hazardous substances database).
Î Observe safety measures for handling the device as well as fire prevention and explosion
protection measures.
Responsibilities of the operator
The operator is responsible for proper operation and compliance with the safety regulations.
Operators are obliged to provide these mounting and operating instructions as well as thereferenced documents to the operating personnel and to instruct them in proper operation.
Furthermore, the operator must ensure that operating personnel or third persons are not exposed to any danger.

6

EB 1015 EN

Safety instructions and measures

Responsibilities of operating personnel
Operating personnel must read and understand these mounting and operating instructions aswell as the referenced documents and observe the specified hazard statements, warnings
and caution notes. Furthermore, the operating personnel must be familiar with the applicablehealth, safety and accident prevention regulations and comply with them.
Referenced standards and regulations
The strainers comply with the requirements of the European Pressure Equipment Directive
2014/68/EU. Strainers with a CE marking have an EU declaration of conformity, which includes information about the applied conformity assessment procedure. The EU declarationof conformity is included in the annex of these instructions (see section 9.3).

1.1 Notes on possible severe personal injury! DANGER
Risk of bursting in pressure equipment.
Strainers and pipelines are pressure equipment. Improper opening can lead to strainer
components bursting.
Î If necessary, a suitable overpressure protection must be installed on site in the plant
section.
Î Before starting any work on the strainer, depressurize all plant sections concerned.
Î Drain the process medium from all the plant sections affected as well as from thestrainer.
Î Wear personal protective equipment.

EB 1015 EN

7

Safety instructions and measures

1.2 Notes on possible personal injury! WARNING
Risk of personal injury due to residual process medium in the strainer.
While working on the strainer, residual process medium can escape and, depending on
its properties, may lead to personal injury, e.g. (chemical) burns.
Î If possible, drain the process medium from all the plant sections affected and thestrainer.
Î Wear protective clothing, safety gloves and eye protection.
Risk of burn injuries due to hot or cold components and pipelines.
Depending on the process medium, strainer components and pipelines may get very hotor cold and cause burn injuries.
Î Allow components and pipelines to cool down or heat up.
Î Wear protective clothing and safety gloves.

8

EB 1015 EN

Safety instructions and measures

1.3 Notes on possible property damage! NOTICE
Risk of the strainer becoming blocked due to contamination (e.g. solid particles) inthe pipeline.
The plant operator is responsible for cleaning the pipelines in the plant.
Î Do not use the strainer to permanently filter the process medium.
Î Observe the maximum permissible pressure for strainer and plant.
Î Observe the maximum permissible differential pressure for strainer and plant.
Risk of strainer damage due to unsuitable medium properties.
The strainer is designed for a process medium with defined properties.
Î Only use the process medium specified for sizing.
Risk of strainer damage due to the use of unsuitable lubricants.
The lubricants to be used depend on the strainer material. Unsuitable lubricants may
corrode and damage the surface.
Î Only use lubricants approved by SAMSON (see section 9.2).
Risk of leakage and strainer damage due to excessively high or low tightening
torques.
Observe the specified torques on tightening strainer components. Excessively tightened
torques lead to parts wearing out quicker. Parts that are too loose may cause leakage.
Î Observe the specified tightening torques (see section 9.2).

EB 1015 EN

9Markings on the device

2 Markings on the device
2.1 Marking on the strainer body

1
3

4

2
5

1

Configuration ID and device index

2

CE marking, if applicable

3

Order number or year of manufacture

4Type designation and mesh size

5

EAC

Fig. 1: Marking on the strainer body

The nameplate of all sizes is affixed to the body flange.

2.2 Material numbers
Specifying the configuration ID, you can contact us to find out which material is used. The
configuration ID is specified on the nameplate (1 (configuration ID and device index). For
more details on the nameplate, see Fig. 1.

10

EB 1015 EN

Design and principle of operation

3 Design and principle ofoperation
Î See Fig. 2
The Type 2 N and Type 2 NI Strainers consistof a Y-style body (1) with flanged connections, filter (2), seal (3) and a cover (4) for
the filter.
The strainer installed upstream of the valve isused to hold back any dirt or other foreign
particles carried along by the medium.
The process medium flows through the bodyin the direction indicated by the arrow.

3.1 Technical data
The strainer body contains information on
the strainer version (see section 2.1).
Process medium and scope of application
The Type 2 N and Type 2 NI Strainers are
suitable for use with liquids, vapors andgases.
Temperature range
The Type 2 N and Type 2 NI are designed
for a temperature range from –10 to+450 °C (14 to 840 °F), depending on the
body material.
Noise emissions
SAMSON is unable to make generalstatements about noise emissions. The noise
emissions depend on the strainer version,plant facilities and process medium.

1

1
2
3
4

2

3

4

Body
FilterSeal
Cover

Fig. 2: Functional diagram of Type 2 N/2 NI
Strainer

EB 1015 EN

11Design and principle of operation! WARNING
Risk of hearing loss or deafness due to loudnoise.
Wear hearing protection when working near
the strainer.
Dimensions and weights
Table 4 provides a summary of the dimensions and weights of Type 2 N andType 2 NI Strainers. The lengths and heights
in the dimensional drawing are shown in
Fig. 3.
Table 1: Technical data
Type 2 N/Type 2 NI
Connection

Flanges DN 15 to 250

Max. permissible temperature

300 to 450 °C

1)

Conformity·

Depending on body material

1)

Table 2: Materials · Material numbers according to DIN EN
Valve size

DN 15 to 150

DN 15 to 250

DN 15 to 100

PN 10 2) · PN 16

PN 16 3) · PN 25

PN 16 4) · PN 25 5)
PN 40

PN 40

Body

Cast iron
EN-GJL-250

Spheroidal graphite iron
EN-GJS-400-18-LT

Cast steel 1.0619

Cast stainless steel
1.4408Cover flange

EN-GJL-250

1.04601.0460 1)

1.4571Pressure rating

DN 15 to 250

Filter

Stainless steel 1.4401

Seal

Graphite on metal core

1)
2)
3)

12

DN 200 and 250: 1.0619
DN 200 and 250 only
DN 100 to 150 only

4)
5)

On request with DN 100 to 150
On request with DN 200 and 250

EB 1015 EN

Design and principle of operation

Table 3: KVS coefficients · Flow resistance coefficient
Valve size in DN

15

20

25

32

40

10

17.5

21

36

50

65

80

100

125

150

200

250

65

116

150

235

366

522

950 1450

Type 2 N
KVS

m³/h

Mesh sizemm

5

Mesh count per cm²
Free filter area
Flow resistancecoefficient

0.5

0.8

150

59

Approx. 3 times pipe cross-section

2

28

12

Approx. 2.75 times Approx. 2.5 times pipe
pipe cross-section
cross-section
2.5

ζValve size in DN

1.25

15

20

25

32

40

50

4.5

8

14

18

29

51

65

80

100

125

150

200

250

90

115

190

290

450

760 1150

Type 2 NI 1)
KVS

m³/h

Mesh size

mm

0.25

Mesh count per cm²

625

Free filter area
Flow resistancecoefficient1)

Approx. 3 times pipe cross-section

Approx. 2.75 times Approx. 2.5 times pipe
pipe cross-section
cross-section
3ζType 2 NI fulfills the requirements of DVGW (German Technical and Scientific Association for Gas and Water)according to DIN EN 161 in combination with a Type 3241 Valve.

Table 4: Dimensions in mm and weights
Valve size in DN

PN 10
PN 16
PN 25
PN 40

15

20

25

32

40

50

65

Length L

130

150

160

180

200

230

290

Height H1

45

60

70

85

95

115

150

Height H2 (strainer insert
pulled out)

75

90

110

135

160

195

225

Spheroidal
graphite iron/
Weight,approx. kg cast iron

1.9

2.8

3.3

5.4

6.5

9.1

12

2.2

3.2

4.0

5.8

7.2

10

14

Cast steel

EB 1015 EN

13Design and principle of operation

Valve size in DN

PN 10
PN 16

80

100

125

150

200

250

Length L

310

350

400

480

600

730

Height H1

180

224

255

290

385

480

Height H2 (strainer insert
pulled out)

295

343

420

485

640

790

17

24

36

52

91

152

19

28

42

60

130

195

PN 25

Spheroidal

PN 40

graphite iron/
Weight,approx. kg cast ironCast steel

X

Ø26.5
G½

2

Ø19.2
G¼

L
X

2

Dimensional drawings“X” detailed views for special version with pressure gauge
connection
H1
H2

1

2

3

4

1

Body

2

Filter3

Seal

4

Cover flange

Fig. 3: Dimensions

14

EB 1015 EN

Design and principle of operation

Pressure-temperature diagramp40

1.44081.0619EN-GJS-400-18-LT
EN-GJL-250

[bar]
PN
40

30
20

25

10

16
10

-10 0

t in °C
80 100 150 200
300 350 400 450
EN-GJL-250
EN-GJS-400-18-LT
1.06191.4408Fig. 4: Pressure-temperature diagram

EB 1015 EN

15Measures for preparation

4 Measures for preparation
After receiving the shipment, proceed as follows:
1. Check the scope of delivery. Compare
the shipment received with the deliverynote.
2. Check the shipment for transportation
damage. Report any damage to
SAMSON and the forwarding agent(refer to delivery note).

4.1 Unpacking
Note
Do not remove the packaging until immediately before installation.
Proceed as follows to lift and install thestrainer:
1. Remove the packaging from the strainer.
2. Dispose of the packaging in accordancewith the valid regulations.
! NOTICE
Risk of strainer damage due to foreign particles entering it.
The protective caps fitted on the strainer's inlet and outlet prevent foreign particles fromentering the strainer and damaging it.
Do not remove the protective caps until immediately before installation.

16

4.2 Transporting and lifting! DANGER
Risk due to suspended loads falling.
Stay clear of suspended or moving loads.
! WARNING
Risk of lifting equipment tipping over andrisk of damage to lifting accessories due toexceeding the rated lifting capacity.
− Only use approved lifting equipment andaccessories whose minimum lifting
capacity is higher than the weight of thestrainer.
− Refer to Table 4 for weights.
! WARNING
Risk of personal injury due to the strainer
tipping.
− Observe the strainer's center of gravity.
− Secure the strainer against tipping over orturning.
Tip− Our after-sales service can provide moredetailed transport and lifting instructions
on request.

EB 1015 EN

Measures for preparation

4.2.1

Transporting

The strainer can be transported using lifting
equipment (e.g. crane or forklift).
Î Leave the strainer in its transport container or on the pallet to transport it.
Î Observe the transport instructions.
Transport instructions− Protect the strainer against external
influences (e.g. impact).
− Do not damage the corrosion protection(paint, surface coatings). Repair any
damage immediately.
− Protect the strainer against moisture anddirt.
− Observe the permissible ambient temperatures (see section 3.1).

4.2.2

Lifting

To install a large strainer into the pipeline,
use lifting equipment (e.g. crane or forklift)
to lift it.

Lifting instructions− Secure slings against slipping.
− Make sure the slings can be removed after installation.
− Prevent the strainer from tilting or tipping.
− Do not leave loads suspended when interrupting work for longer periods oftime.
− Make sure that the axis of the pipeline isalways horizontal during lifting and theaxis of the plug stem is always vertical.
Version with flanges
1. Attach one sling to each flange of the
body and to the rigging equipment (e.g.
hook) of the crane or forklift (see Fig. 5).
2. Carefully lift the strainer. Check whether
the lifting equipment and accessories canbear the weight.
3. Move the strainer at an even pace to thesite of installation.
4. Install the strainer into the pipeline (seesection 5.3).
5. After installation in the pipeline, check
whether the flanges are bolted tight andthe strainer in the pipeline holds.
6. Remove slings.

EB 1015 EN

17Measures for preparation

6. After installation, check whether the weld
seams hold.
7. Remove connector and slings.
Tip
We recommend using a hook with safety
latch (see Fig. 5 and Fig. 6). The safety latch
prevents the slings from slipping during lifting and transporting.

Fig. 5: Lifting points on the strainer with flanges

Version with welding ends
1. Attach one sling to each welding end of
the body and to the rigging equipment(e.g. hook) of the crane or forklift (seeFig. 6).
2. Secure the slings attached to the bodyagainst slipping using a connector.
3. Carefully lift the strainer. Check whether
the lifting equipment and accessories canbear the weight.
4. Move the strainer at an even pace to thesite of installation.

Fig. 6: Lifting points on the strainer with welding ends

5. Install the strainer into the pipeline (seesection 5.3).

18

EB 1015 EN

Measures for preparation

4.3 Storage! NOTICE
Risk of strainer damage due to improper
storage.
− Observe the storage instructions.
− Avoid long storage times.
− Contact SAMSON in case of different
storage conditions or long storage periods.
Note
We recommend regularly checking the device and the prevailing storage conditions
during long storage periods.
Storage instructions− Protect the device against external influences (e.g. impact).
− Do not damage the corrosion protection(paint, surface coatings). Repair any
damage immediately.
− Protect the device against moisture anddirt. Store it at a relative humidity of lessthan 75 %. In damp spaces, prevent condensation. If necessary, use a drying
agent or heating.

Tip
SAMSON's After-sales Service can provide
more detailed storage instructions on request.

4.4 Preparation for installation
Proceed as follows:Î Flush the pipelines.
Note
The plant operator is responsible for cleaning the pipelines in the plant.
Î Check the strainer to make sure that it isclean.
Î Check the strainer for damage.
Î Check to make sure that the typedesignation, nominal size, material,pressure rating and temperature range ofthe strainer match the plant conditions(size and pressure rating of the pipeline,
medium temperature etc.).
Î Check any mounted pressure gauges tomake sure they function.

− Make sure that the ambient air is free ofacids or other corrosive media.
− Observe the permissible ambient temperatures (see section 3.1).
− Do not place any objects on the device.

EB 1015 EN

19

Mounting and start-up

5 Mounting and start-up! NOTICE
Risk of overheating due to excessive ambient
temperatures or insufficient heat dissipation
when components are insulated.
− Do not include the strainer in the insulationof the pipeline.
! NOTICE
Risk of impaired functioning of the strainer
and leakage at the joint due to installation
under tension.
− Bolt the strainer to the pipeline free ofstress.
− If necessary, support the pipelines near tothe connections.
− Do not attach supports directly to thestrainer.

5.1 Mounting positions
Horizontal pipelines− Gases and liquids
Cover and filter face downwards.
− SteamCover and filter face sideward.
Vertical pipelines− Gases, vapors and liquids
In strainers where the medium flows upward, the cover and filter face upward.
Installation conditions
Î Make sure that the strainer remains freely
accessible after the plant has been
completed.
Î Make sure the direction of flow matches
the direction indicated by the arrow on
the body.
Î Allow sufficient space to remove the filter.
Î Install the strainer free of stress.
! NOTICE
Possible malfunction and damage due to adverse weather conditions (temperature, humidity).
− Do not install the device outdoors or inrooms prone to frost.
− Protect the strainer against frost if it is usedin combination with freezing media.
− Either heat the strainer or remove it fromthe plant and completely drain the residual
medium after a plant shutdown.

20

EB 1015 EN

Mounting and start-up

5.2 Additional fittings
Shut-off valve
Install a hand-operated shut-off valve both
upstream and downstream of the strainer(see Fig. 7). This allows the plant to be shut
down for cleaning and maintenance, andwhen the plant is not used for longer periodsof time.
Pressure gauges
Install a pressure gauge both upstream anddownstream of the strainer to monitor thepressures prevailing in the plant (see Fig. 7).
Optionally with pressure gauge connections
on the strainer body.

1

1
2
3
4
5
6

2

3

5

6

4

1

Shut-off valve
Upstream pressure gauge
Strainer
Downstream pressure gauge
Pressure reducing valve
Compensation chamber

Fig. 7: Steam control including a Type 2 N Strainer (installation example)

EB 1015 EN

21

Mounting and start-up

5.3 Installing the strainer
Version with flanges
1. Close the shut-off valve in the pipeline
while the valve is being installed.
2. Remove the protective caps from thestrainer ports before installing the strainer.
3. Lift the strainer using suitable lifting
equipment to the site of installation (seesection 4.2). Observe the flow direction.
The arrow on the strainer indicates the
direction of flow.
4. Make sure that the correct flange gaskets
are used.
5. Bolt the pipeline to the strainer free ofstress.
6. Depending on the field of application,
allow the strainer to cool down or heat
up to reach ambient temperature before
start up.

5.4 Start-up! DANGER
Risk of personal injury due to process medium escaping under pressure.
− First start up the strainer after mounting allparts.
! NOTICE
Risk of the body bursting due to excessive
pressure during pressure testing.
− The pressure must not exceed the maximum permissible pressure by 1.5 times thepressure rating.
! NOTICE
Risk of the strainer being destroyed by steam
hammering.
− Drain off any condensate in the pipeline.
− Vent the plant.

Version with welding ends
1. Close the shut-off valve in the pipeline
while the valve is being installed.
2. Lift the strainer using suitable lifting
equipment to the site of installation (seesection 4.2). Observe the flow direction.
The arrow on the strainer indicates the
direction of flow.
3. Weld the strainer free of stress into thepipeline.

! NOTICE
Risk of strainer damage due to a suddenpressure increase and resulting high flow
velocities.
Slowly open the shut-off valve in the pipeline
during start-up.
Once installed in the pipeline, the strainer
can be put into operation.

4. Depending on the field of application,
allow the strainer to cool down or heat
up to reach ambient temperature before
start up.
22

EB 1015 EN

Mounting and start-up

5.4.1

Gases and liquidsÎ Open the shut-off valves slowly preferably starting from the upstream pressureside.
Î Avoid pressure surges.

5.4.2

Steam

Î Completely drain and dry steam lines toprevent water hammering.
Î Slowly allow the steam to enter the plant
to ensure that the pipes and valves warm
up evenly and to avoid excessive flow
velocities.
Î Before the full capacity is reached, drain
off the start-up condensate.
Î Make sure that the air contained in theplant escapes as quickly as possible.
Î Open the shut-off valves slowly preferably starting from the upstream pressureside.
Î Avoid pressure surges.

EB 1015 EN

23

Servicing

6 Servicing
The strainer does not require any maintenance. Nevertheless, it is subject to naturalwear, particularly at the filter. Depending on
the operating conditions, check the strainerat regular intervals to avoid possible malfunctions.
! DANGER
Risk of bursting in pressure equipment.
Strainers and pipelines are pressure equipment. Improper opening can lead to burstingof the strainer.
− Before starting any work on the strainer,
depressurize all plant sections concerned
as well as the strainer.
− Drain the process medium from all theplant sections affected as well as from thestrainer.
− Wear personal protective equipment.
! WARNING
Risk of personal injury due to residual process medium in the strainer.
While working on the strainer, residual process medium can escape and, depending on
its properties, may lead to personal injury,
e.g. (chemical) burns.
Wear protective clothing, safety gloves andeye protection.

24! WARNING
Risk of burn injuries due to hot or cold
components and pipeline.
Strainer components and the pipeline may
become very hot or cold. Risk of burn injuries.
− Allow components and pipelines to cool
down or heat up.
− Wear protective clothing and safety gloves.
! NOTICE
Risk of strainer damage due to incorrect
service or repair.
Service and repair work must be performedby trained staff only.
! NOTICE
Risk of strainer damage due to excessively
high or low tightening torques.
Observe the specified torques on tightening
strainer components. Excessively tightened
torques lead to parts wearing out quicker.
Parts that are too loose may cause leakage.
Observe the specified tightening torques (seesection 9.2).
! NOTICE
Risk of strainer damage due to the use of
unsuitable lubricants.
Only use lubricants approved by SAMSON(see section 9.2).

EB 1015 EN

Servicing

Note
The strainer was checked by SAMSON
before it left the factory.
− Certain test results certified by SAMSON
lose their validity when the strainer isopened. Such testing includes leak tests.
− The product warranty becomes void ifservice or repair work not described inthese instructions is performed without
prior agreement by SAMSON's after-sales
service.
− Only use original spare parts by
SAMSON, which comply with the original
specifications.
Tip
SAMSON's After-sales Service can support
you in drawing up an inspection and test
plan for your plant.

6.1 Cleaning or exchanging
the filterÎ See Fig. 2! NOTICE
Risk of strainer damage due to excessively
high or low tightening torques.
Observe the specified torques on tightening
strainer components. Excessively tightened
torques lead to parts wearing out quicker.
Parts that are too loose may cause leakage.
Observe the specified tightening torques (seesection 9.2).
Removal1. Put the plant out of operation (see section 8.1).
2. Remove the cover (4) by unscrewing thecover nuts. See section 9.2 for size of the
open-end wrench.
3. Remove filter (2) and seal (3).
4. Thoroughly clean the filter.
Replace a damaged filter.
Installation
1. Renew the seal (3) (see section 9.2) andinsert the new seal in the cover (4).
2. Insert the filter (2) into the cover (4).
3. Mount the cover (4) by screwing on the
cover nuts. Observe the tightening
torques specified in section 9.2.
4. Put the plant into operation (see section 5.4).

EB 1015 EN

25

Malfunctions

6.2 Preparation for return ship- 6.3 Ordering spare parts andment
operating supplies
Defective strainers can be returned to
SAMSON for repair. Proceed as follows toreturn devices to SAMSON:

Contact your nearest SAMSON subsidiaryor SAMSON's After-sales Service for information on spare parts, lubricants and tools.

1. Put the plant out of operation (see section 8.1).

Spare parts

2. Decontaminate the strainer. Remove any
residual process medium.
3. Fill in the Declaration on Contamination.
The declaration form can be downloaded from our website atu www.samsongroup.com > SERVICE &SUPPORT > After-sales Service.
4. Continue as described on our website atu www.samsongroup.com > Service &Support > After-sales Service > Returning
goods.

See section 9.2 for details on spare parts.
LubricantSee section 9.2 for details on suitable lubricants.

7 Malfunctions
The malfunctions listed in Table 5 are causedby mechanical faults and incorrect strainer
sizing. In the simplest case, the functioning
can be restored following the recommended
action. Special tools may be required for repair work.
For troubleshooting, the conditions, such as
installation, process medium, temperatureand pressure conditions, must be taken into
account.
SAMSON's After-sales Service can help
during troubleshooting. Further information
is available in section 9.1.
Tip
SAMSON's After-sales Service can support
you in drawing up an inspection and test
plan for your plant.

26

EB 1015 EN

Malfunctions

Note
Contact SAMSON's After-sales Service for
malfunctions not listed in the table.

Table 5: Troubleshooting
Malfunction

Pressure drops below theadjusted set point of thepressure regulator installed downstream.

Possible reasons

Recommended action

Strainer installed against the flow.

Î Install the strainer so that the direction of flow
matches the direction indicated by the arrow on
the body.
Î Check the filter for deformation. Replace the filter, if necessary.

Foreign particles and dirt blocking the filter.

Î Remove foreign particles and dirt.

Strainer or KVS/CV coefficient too
small.

Î Check the sizing.

Î Replace a damaged filter.
Î Install the correctly sized strainer.
Î Check the sizing.

Loud noises.

High flow velocity, cavitation.

Leakage at the strainer.

The seal is defective.

EB 1015 EN

Î If necessary, install a larger strainer.
Î Check the filter for deformation. Replace the filter, if necessary.
Î Replace damaged parts.

27

Decommissioning and removal

8 Decommissioning andremoval! DANGER
Risk of bursting in pressure equipment.
Strainers and pipelines are pressure equipment. Improper opening can lead to burstingof the strainer.
− Before starting any work on the strainer,
depressurize all plant sections concerned
as well as the strainer.
− Drain the process medium from all theplant sections affected as well as from thestrainer.
− Wear personal protective equipment.
! WARNING
Risk of burn injuries due to hot or cold components and pipeline.
Strainer components and the pipeline may
become very hot or cold. Risk of burn injuries.
− Allow components and pipelines to cool
down or heat up.
− Wear protective clothing and safety gloves.

! WARNING
Risk of personal injury due to residual process medium in the strainer.
While working on the strainer, residual process medium can escape and, depending on
its properties, may lead to personal injury,
e.g. (chemical) burns.
Wear protective clothing, safety gloves andeye protection.

8.1 Decommissioning
To decommission the strainer for service andrepair work or disassembly, proceed as follows:
1. Close the shut-off valve on the upstreamside.
2. Close the shut-off valve on the downstream side.
3. Depressurize the plant.
4. If necessary, allow the pipeline andstrainer to cool down or heat up.
5. Completely drain the pipelines andstrainer.
6. Remove the strainer from the pipeline(see section 4.2).

8.2 Disposal
Î Observe local, national and international refuse regulations.
Î Do not dispose of components, lubricantsand hazardous substances together withyour household waste.

28

EB 1015 EN

Annex9 Annex9.1 After-sales service
Contact SAMSON's After-sales Service forsupport concerning service or repair work or
when malfunctions or defects arise.
E-mail address
You can reach our after-sales service ataftersalesservice@samsongroup.com.
Addresses of SAMSON AG and its subsidiaries
The addresses of SAMSON, its subsidiaries,
representatives and service facilities

worldwide can be found on our website(u www.samsongroup.com) or in all
SAMSON product catalogs.
To assist diagnosis and in case of an unclear
mounting situation, specify the following details (so far as possible). See section 2:− Device type and nominal size
− Upstream and downstream pressure− Temperature and process medium− Max. flow rate
− Installation drawing showing the exact
location of the strainer and all the additionally installed components (shut-off
valves, pressure gauge etc.)

9.2 Spare parts, tightening torques and lubricant
Table 6: Order numbers for filter and seal · Tightening torques for cover screws
Valve size

Type 2 N(standard strainer insert)

Type 2 NI(dual strainer insert)

Seal

Order no.
DN 15
DN 20
DN 25
DN 32
DN 40
DN 50
DN 65
DN 80
DN 100
DN 125
DN 150
DN 200
DN 250EB 1015 EN

0550 0222
0223
0224
0225
0226
0227
0228
0229
0230
0231
0232
0233
0234

0550 0238
0239
0240
0241
0242
0243
0244
0245
0246
0247
0248
0249
0250

8422 0011
0019
0023
0029
0039
0048
0056
0065
0076
0084
0092
0102
8414-1510

29

AnnexValve size
DN 15
DN 20
DN 25
DN 32
DN 40
DN 50
DN 65
DN 80
DN 100
DN 125
DN 150
DN 200
DN 250Quantity of covernuts

Size of cover nuts

Width across flatsof cover nuts

Tightening torqueM10

16 (17)~30 NmM12
M16

18 (19)24~50 Nm~100 Nm

M12

18 (19)~50 Nm6 piecesM1624~100 Nm

8 pieces
10 pieces

M20

30~170 Nm

2 pieces

4 pieces

Table 7: Recommended lubricant
Designation

Temperature range in °C

Color

Packs in g

Item no. of lubricant

Gleitmo 1763 V-20 to +1000

Gray

5000
250
100

8150-0119
8150-4008
8150-4010

9.3 Certificates
The EU declarations of conformity are included on the next pages.

30

EB 1015 EN

Annex

Modul H/Module H Nr./No. / N° CE-0062-PED-H-SAM 001-16-DEU-rev-A
SAMSON erklärt in alleiniger Verantwortung für folgende Produkte:/For the following products, SAMSON hereby declares
under its sole responsibility:
Schmutzfänger/Strainers
Typ 2 N, 2 NI (Erz.-Nr. 2602)
die Konformität mit nachfolgender Anforderung/the conformity with the following requirement.
Richtlinie des Europäischen Parlaments und des Rates zur Harmonisierung der Rechtsvorschriftender Mitgliedstaaten über die Bereitstellung von Druckgeräten auf dem Markt.

2014/68/EU

vom 15.05.2014

Directive of the European Parliament and of the Council on the harmonization of the laws of theMember States relating of the making available on the market of pressure equipment.

2014/68/EU

of 15 May 2014

Angewandtes Konformitätsbewertungsverfahren für Fluide nach Art. 4(1) (c.i) erster Gedankenstrich.

Modul siehe
TabelleConformity assessment procedure applied for fluids according to Article 4 (1)(c.i), first indent.

See table formoduledurch
certified by
Bureau Veritas
S. A. (0062)

Nenndruck
Nominal pressure
PN 25
PN 40
Class 300

DN
NPS

15
½

20
¾
ohne
ohne
ohne

25
1

32
1¼

40
1½

50
2

65
-

80
3

100
4

125
-

150
6

200
8

250
10

H
H
H

Geräte, denen laut Tabelle das Konformitätsbewertungsverfahren Modul H zugrunde liegt, beziehen sich auf die„Zulassungsbescheinigung eines Qualitätssicherungssystems“ ausgestellt durch die benannte Stelle.
Devices whose conformity has been assessed based on Module H refer to the certificate of approval for the quality management system
issued by the notified body.

Dem Entwurf zu Grunde gelegt sind Verfahren aus:/The design is based on the procedures specified in the following standards:

EU-Konformitaetserklaerung_Blatt-11_Modul-H_DE-EN_Rev.03_2017-02-08.docx

DIN EN 12516-2, DIN EN 12516-3 bzw./or ASME B16.34, ASME B16.42
Das Qualitätssicherungssystem des Herstellers wird von folgender benannter Stelle überwacht:
The manufacturer’s quality management system is monitored by the following notified body:

Bureau Veritas S.A. Nr./No. 0062, Newtime, 52 Boulevard du Parc, IIle de la Jatte, 92200 Neuilly sur Seine, France
Hersteller:/Manufacturer: SAMSON AG, Weismüllerstraße 3, 60314 Frankfurt am Main, Germany

Frankfurt am Main, 08. Februar 2017/08 February 2017

Klaus Hörschken
Zentralabteilungsleiter/Head of Central Department
Entwicklung Ventile und Antriebe/R&D, Valves and Actuators

SAMSON AKTIENGESELLSCHAFT
Weismüllerstraße 3 60314 Frankfurt am Main

EB 1015 EN

Dr. Michael Heß
Zentralabteilungsleiter/Head of Central Department
Product Management & Technical Sales

Telefon: 069 4009-0 · Telefax: 069 4009-1507
E-Mail: samson@samson.de

Revision 0331

﻿

Modul H/Module H, Nr./No. / N° CE-0062-PED-H-SAM 001-16-DEU-rev-A
SAMSON erklärt in alleiniger Verantwortung für folgende Produkte:/For the following products, SAMSON hereby declares
under its sole responsibility:
Schmutzfänger/Strainers
Typ/Type 1N, 1NI, 1FN, 1FNI (Erz.-Nr./Model No. 2601), 2N, 2NI (2602)
die Konformität mit nachfolgender Anforderung/the conformity with the following requirement
Richtlinie des Europäischen Parlaments und des Rates zur Harmonisierung der Rechtsvorschriftender Mitgliedstaaten über die Bereitstellung von Druckgeräten auf dem Markt.

2014/68/EU

vom 15.05.2014

Directive of the European Parliament and of the Council on the harmonization of the laws of theMember States relating of the making available on the market of pressure equipment.

2014/68/EU

of 15 May 2014

Angewandtes Konformitätsbewertungsverfahren für Fluide nach Art. 4(1)(c.ii) und (c.i) zweiter
Gedankenstrich.

Modul siehe
TabelleConformity assessment procedure applied for fluids according to Article 4(1)(c.ii) and (c.i), second
indentSee table formoduledurch
certified by
Bureau Veritas
S. A. (0062)

Typ/Type

NenndruckPressure rating

2N, 2NIPN 10 / PN 16

1N, 1NI,
1FN, 1FNI

PN 25

DN
NPS

3/8

15
½

20
¾

---

25
1

32
1¼

40
1½

50
2

65
-

80
3

ohne/without
ohne/without

100
4

125
-

150
6

A (1)

200
8

250
10

H

A (1)

(1) Die Identifikationsnummer 0062 von Bureau Veritas S.A. gilt nicht für Modul A.
The identification number 0062 of Bureau Veritas S.A. is not valid for Modul A.
Geräte, denen laut Tabelle das Konformitätsbewertungsverfahren Modul H zugrunde liegt, beziehen sich auf die„Zulassungsbescheinigung eines Qualitätssicherungssystems“ ausgestellt durch die benannte Stelle.

EU-Konformitaetserklaerung_Blatt-07_Modul-A_Modul-H_DE-EN_Rev.03_2017-02-08.docx

Devices whose conformity has been assessed based on Module H refer to the certificate of approval for the quality management system
issued by the notified body.

Dem Entwurf zu Grunde gelegt sind Verfahren aus:/The design is based on the procedures specified in the following standards:
DIN EN 12516-2, DIN EN 12516-3 bzw./or ASME B16.1, ASME B16.24, ASME B16.34, ASME B16.42
Das Qualitätssicherungssystem des Herstellers wird von folgender benannter Stelle überwacht:
The manufacturer`s quality management system is monitored by the following notified body:
Bureau Veritas S.A. Nr./No. 0062, Newtime, 52 Boulevard du Parc, IIle de la Jatte, 92200 Neuilly sur Seine, France
Hersteller:/Manufacturer: SAMSON AG, Weismüllerstraße 3, 60314 Frankfurt am Main, Germany
Frankfurt am Main, 08. Februar 2017/08 February 2017

Klaus Hörschken
Zentralabteilungsleiter/Head of Central Department
Entwicklung Ventile und Antriebe/R&D, Valves and Actuators
SAMSON AKTIENGESELLSCHAFT
Weismüllerstraße 3 60314 Frankfurt am Main

32

Dr. Michael Heß
Zentralabteilungsleiter/Head of Central Department
Product Management & Technical Sales
Telefon: 069 4009-0 · Telefax: 069 4009-1507
E-Mail: samson@samson.de

Revision 03

EB 1015 EN

EB 1015 EN

33

34

EB 1015 EN

EB 1015 EN

35

SAMSON AKTIENGESELLSCHAFT
Weismüllerstraße 3 · 60314 Frankfurt am Main, Germany
Phone: +49 69 4009-0 · Fax: +49 69 4009-1507
samson@samson.de · www.samson.de2021-05-27 · English

EB 1015 EN