Samson EB 14b Service manual

PFEIFFER Chemie-Armaturenbau GmbH · Hooghe Weg 41 · 47906 Kempen · Germany
Phone: [phone] · Fax: [phone]
[e-mail] · www.pfeiffer-armaturen.com
MOUNTING AND
OPERATING INSTRUCTIONS
EB 14b
Translation of the original manual
Control and shut-off valve BR 14b and BR 14c
to combine with actuators
January 2022 edition

EB 14b_EN
January 2022 edition
Subject to technical changes
Note regarding this installation and operating manual
This Installation and Operating Manual (EB) provides guidance
for safe assembly and operation.
The notes and instructions in this EB are binding when handling
PFEIFFER devices. The figures and illustrations in this EB are ex-
amples and must therefore be considered as such.
ÖFor safe and correct use, read this EB carefully prior to use
and keep it for later reference.
ÖIn the case of questions that go beyond the scope of this EB,
please contact the After Sales Service at PFEIFFERChemie-
ArmaturenbauGmbH.
ÖThis manual only applies to the butterfly valve itself, the re-
spective additional manual applies for the mounted actuator.
Definition of signal words
Hazardous situations that lead to death or serious injuries
Situations that can lead to death or serious injuries
Property damage and malfunctions
Additional information
Recommended action
DANGER
WARNING
NOTE
Info
Tip

EB 14b_EN
January 2022 edition
Subject to technical changes
Content
Content
1 Safety instructions and safety measures 1-1
1.1 Notes regarding possible severe personnel injury 1-2
1.2 Notes regarding possible personnel injury 1-2
1.3 Notes regarding possible property damage 1-4
1.4 Warning notes on the device 1-4
2 Markings on the device 2-1
2.1 Butterfly valve type plate 2-2
2.2 Actuator type plate 2-2
2.3 Turning direction notice sign 2-2
3 Design and principle of operation 3-1
3.1 Variants 3-1
3.2 Additional fittings 3-2
3.3 Attachments 3-2
3.4 Technical data 3-2
3.5 Butterfly valve assembly 3-2
3.5.1 Assembly of butterfly valve BR14b with spring washer preloaded V-ring packing (type WTD and MTD) 3-2
3.5.2 Assembly of butterfly valve BR14b with adjustable stuffing box (type WNS) 3-4
3.5.3 Assembly of butterfly valves BR14c (BR74b) with spring washer preloaded V-ring packing (type WTD and MTD) 3-6
3.5.4 Note for installation of actuator elements 3-8
4 Shipment and on-site transport 4-1
4.1 Accepting delivery 4-1
4.2 Unpacking the butterfly valve 4-1
4.3 Transporting and lifting the butterfly valve 4-1
4.3.1 Transporting 4-1
4.3.2 Lifting 4-1
4.3.3 Lifting points on the body 4-2
4.3.4 Lifting points on the bracket 4-3
4.4 Storing the butterfly valve 4-3
5 Installation 5-1
5.1 Installation conditions 5-1
5.2 Preparing for assembly 5-1
5.3 Assembling the butterfly valve and actuator 5-1
5.4 Installing the butterfly valve in the pipe 5-2
5.4.1 General 5-2
5.4.2 Installing the butterfly valve 5-3
5.5 Checking the assembled butterfly valve 5-3
5.5.1 Functional test 5-3
5.5.2 Pressure test of the pipe section 5-4
5.5.3 Rotary movement 5-4
5.5.4 Fail-safe position 5-4

EB 14b_EN
January 2022 edition
Subject to technical changes
Content
6 Start-up 6-1
7 Operation 7-1
8 Malfunction 8-1
8.1 Detecting and rectifying errors 8-1
8.2 Carrying out emergency measures 8-2
9 Servicing 9-1
9.1 Periodic tests 9-1
9.2 Maintenance work 9-2
9.2.1 Replacing the seal ring 9-2
9.3 Ordering spare parts and consumables 9-2
10 Decommissioning 10-1
11 Removal 11-1
11.1 Removing the butterfly valve from the pipe 11-1
11.2 Disassembling the actuator 11-1
12 Repairs 12-1
12.1 Replacing the packing 12-1
12.1.1 Replacing the V-ring packing with butterfly valve BR14b (typeWTD and MTD) 12-1
12.1.2 Replacing the meshwork packing with butterfly valve BR14b (typeWNS) 12-1
12.1.3 Replacing the V-ring packing with butterfly valve BR14c (BR74b) (typeWTD and MTD) 12-1
12.2 Replacing the seal ring 12-1
12.2.1 Replacing the seal ring in butterfly valves up to DN300 (NPS12) 12-1
12.2.2 Replacing the seal ring in butterfly valves from DN400 (NPS16) 12-3
12.3 Additional repairs 12-3
12.4 Sending devices to PFEIFFER 12-3
13 Disposal 13-1
14 Certificates 14-1
15 Annex 15-1
15.1 Tightening torques, lubricant and tools 15-1
15.1.1 Tightening torques 15-1
15.1.2 Lubricant 15-2
15.1.3 Tools 15-2
15.2 Service 15-2
15.3 Spare parts 15-2
15.3.1 Spare parts for butterfly valve BR14b (typeWTD and MTD) 15-3
15.3.2 Spare parts for butterfly valve BR14b (type WNS) 15-4
15.3.3 Spare parts for butterfly valve BR14c (typeWTD and MTD) 15-5

1-1
EB 14b_EN
January 2022 edition
Subject to technical changes
Safety instructions and safety measures
1 Safety instructions and safety measures
Intended use
The PFEIFFER butterfly valve BR 14b is manually operated in
combination with an actuator for the regulation of the volume
flow, pressure and temperature of fluid, gaseous or vaporous me-
dia.
−The butterfly valve and its drive are designed for precisely
defined conditions (e.g. operating pressure, utilised medium,
temperature).
Therefore the operator must make sure that the butterfly valve
is only used when the conditions of use comply with the de-
sign criteria defined in the order.
If the operator would like to use the butterfly valve in other
applications or environments, they must contact PFEIFFER.
−Manual butterfly valves are only intended for use, after instal-
lation in a pipe system, to cut off the media, let it flow
through or regulate it within the permitted pressure and tem-
perature limits.
−Automated butterfly valves are only intended for use, after in-
stallation in a pipe system and after connecting the drive to
the control, to cut off the media, let it flow through or regulate
it within the permitted pressure and temperature limits.
−The data sheet contains the permissible pressure and temper-
ature range for these butterfly valves TB14b.
−The safety regulations that apply to the pipe system in which
the valves are installed and to the control system to which the
actuator is connected also apply to the butterfly valves.
This manual only provides safety instructions that are to be
observed additionally for butterfly valves.
There may be additional safety instructions in the manuals for
the actuator assemblies.
−It is assumed that this chapter is observed when using the
valve as intended.
Reasonably foreseeable erroneous use and unintended use
The butterfly valve is not suited for the following areas of use:
−Use outside of the technical data and the limits defined by the
design.
−Use outside of the limited defined by the peripheral devices
installed on the butterfly valve.
Furthermore, the following activities are considered unintended
use:
−Use of third-party spare parts.
−Performance of maintenance and repair work that is not de-
scribed.
Qualification of operating personnel
The butterfly valve may only be disassembled, dismantled, as-
sembled and commissioned by qualified specialist personnel
trained in pressurised pipes who are familiar with the assembly,
commissioning and operation of this product.
−Specialist personnel in terms of this installation and operating
manual are persons who, on the basis of their vocational ed-
ucation, knowledge and experience and knowledge of the
relevant standards, are capable of evaluating the assigned
tasks and identifying possible hazards.
Personal protective equipment
Depending on the utilized medium, PFEIFFER recommends the
following protective equipment:
−Protective garments, protective gloves and eye protection
when using hot, cold, aggressive and/or corrosive media.
−Hearing protection when working near the butterfly valves.
−Request additional protective equipment from the plant oper-
ator.
Prohibition of modifications
Changes to the product are not permitted without consulting
PFEIFFER. Non-compliance invalidates the product guarantee.
PFEIFFER shall not be held liable for any resulting property dam-
age or personal injury.
Protective devices
In the case of a power supply failure, the butterfly valve automat-
ically switches to a certain fail-safe position, see Fail-safe posi-
tions”in Chapter “3 Design and principle of operation”.
−The fail-safe position corresponds to the effective direction
and is indicated on the type plate of the rotary actuators, see
the actuator documentation.
−The valve is to be included in the equipotential bonding of the
plant.
Warning of residual risks
To prevent personal injury or property damage, the operator and
operating personnel must use suitable measures to prevent the
hazards that can result from the flow medium and operating
pressure as well as the signal pressure and moving parts of the
butterfly valve.
−Therefore, the operator and operating personnel must ob-
serve all the hazard information, warning information and
information in this installation and operating manual.
Obligation of the operator to exercise diligence
The operator is responsible for proper operation as well as com-
pliance with the safety regulations.
−The operator is responsible for providing operating personnel
with this installation and operating manual as well as the ap-
plicable documents and to provide instructions on proper op-
eration.
−Furthermore, the operator must ensure that operating person-
nel and third parties are not endangered.
It is not the responsibility of PFEIFFER and therefore when using
the butterfly value ensure that:

1-2 EB 14b_EN
January 2022 edition
Subject to technical changes
Safety instructions and safety measures
−The butterfly valve is only used as intended as described in
this chapter.
−An actuator unit that is subsequently installed on the butterfly
valve is adapted to the butterfly valve and the max. torque is
observed, and is correctly adjusted in the end positions, and
in particular in the closed position of the valve.
−The pipe system and control system are properly installed
and regularly checked. The wall thickness of the butterfly
valve body is measured such that an additional load of the
usual magnitude is taken into account for a pipe system in-
stalled properly in this way.
−The valve is connected properly to these systems.
−The customary flow rates in continuous operation are not ex-
ceeded in this pipe system. It is recommended to contact
Pfeiffer in the case of abnormal operating conditions, such as
vibrations, hydraulic shock, cavitation and also small
amounts of solid matter in the medium, especially abrasive
matter.
−Coordinate operating parameters near the cavitation limits
and/or with noise emission clearly above 85 dB with
PFEIFFER.
Obligation of operating personnel to exercise diligence
Operating personnel must be familiar with this installation and
operating manual and the applicable documents and comply
with the indicated hazard information, warning information and
other information. Furthermore, operating personnel must be fa-
miliar with the applicable regulations concerning occupational
safety and accident prevention and observe them.
Applicable standards and directives
−The butterfly valves fulfil the requirements of the European
Pressure Equipment Directive 2014/68/EU and the European
Machinery Directive 2006/42/EC.
In the case of butterfly valves provided with a CE marking,
the Declaration of Conformity provides information about the
conformity assessment procedure that was used.
The corresponding declarations of conformity are available
in the Annex of this EB, see chapter “14 Certificates“.
−According to an ignition hazard assessment according to
DIN EN ISO 80079-36, PFEIFFER butterfly valves do not
have any own potential ignition sources and therefore are not
subject to Directive 2014/34/EU.
−CE marking based on this standard is not permitted. The in-
clusion of valves in the equipotential bonding of a plant ap-
plies independently of the directive for all metal parts in po-
tentially explosive areas.
1.1 Notes regarding possible severe per-
sonnel injury
Hazards and ineffectiveness of the warranty!
In the case of non-compliance with the following hazard and
warning information, hazards may arise and the warranty pro-
vided by PFEIFFER may become invalid.
ÖObserve the following hazards and warning information.
ÖContact PFEIFFER in the case of questions:
Hazards and damage due to unsuitable butterfly valves!
Butterfly valves whose permissible pressure/temperature range
(=”rating”) is not sufficient for the operating conditions can pose
a danger to the user and cause damage to the pipe system.
ÖOnly operate butterfly valves with a permissible pressure/
temperature range (=”rating”) sufficient for the operating
conditions, see the data sheet TB14b
Risk of bursting of the pressure equipment!
Butterfly valves and pipes are pressure equipment. Improper
opening can cause the bursting of butterfly valve components.
ÖObserve the maximum permissible pressure the butterfly
valve and plant.
ÖBefore working on the butterfly valve, depressurise the con-
cerned plant parts and the butterfly valve.
ÖBefore removing the butterfly valve from the pipe or loosen-
ing the screw connection on the bonnet, completely release
the pressure in the pipe so that the medium does not escape
uncontrolled from the line.
ÖEmpty the medium from the concerned plant parts and but-
terfly valve. (Wear protective equipment).
Danger due to incorrect loosening of an optional adjustable
stuffing box!
The valve shaft is sealed by a stuffing box.
ÖBefore the nuts on the compression spacer are loosened or
released, fully release the pressure in the pipe so no medium
escapes from the stuffing box.
1.2 Notes regarding possible personnel injury
Danger of burning due to hot or cold components and pipes!
Depending on the utilised medium, butterfly valve components
and pipes can become very hot or very cold and cause burns
upon contact.
ÖButterfly valves must be protected against contact in the case
of operating temperatures >+50°C or <-20°C together with
the pipe connections.
DANGER
WARNING

1-3
EB 14b_EN
January 2022 edition
Subject to technical changes
Safety instructions and safety measures
Danger of injury due to pressurised components and escaping
medium!
ÖDo not loosen the screw of an optional test connection while
the butterfly valve is pressurised.
Danger of crushing due to moving parts!
The butterfly valve contains moving parts (actuator stem and
switching shaft) that can lead to crushing if reaching into it.
ÖDo not reach into the yoke during operation.
ÖWhen working on the butterfly valve, interrupt and lock
pneumatic energy and the control signal.
Danger of injury during the switching operation if performing
test runs on butterfly valves not installed in the pipe!
ÖDo not reach into the butterfly valve. This can result in serious
injuries.
Danger of injury due to venting the actuator!
During operation, when regulating or opening and closing the
butterfly valve, the actuator can be ventilated.
ÖInstall the butterfly valve such that the actuator does not venti-
late at eye level.
ÖUse suitable silencers and plugs.
ÖWear eye protection when working near the valve.
Danger of injury due to preloaded springs!
Butterfly valves that are equipped with preloaded actuator
springs are under mechanical tension.
ÖBefore working on the actuator, release the compression from
the preloaded springs, see the corresponding actuator docu-
mentation.
Danger of injury due to residual medium in the butterfly valve!
When a butterfly valve must be removed from a pipe, medium
can escape from the pipe or the butterfly valve.
ÖIn the case of media that is harmful to health or hazardous,
the pipe must be completely emptied before a butterfly valve
can be removed.
ÖPay attention to the afterflow of residuals or residuals that re-
main in dead spots.
Danger of injury due to the releasing of body screw connec-
tions!
If the body screw connections must be released, medium can es-
cape from the butterfly valve.
ÖThe screw connections on the connection of the body parts
may only be released or loosened after the butterfly valve has
been removed.
ÖDuring reassembly, retighten the screws according to Chapter
“15.1.1.1 Adjustable stuffing box” with a torque wrench.
WARNING
Hazards due to incorrect butterfly valve use!
The incorrect use of the butterfly valve can represent a hazard for
the user and cause damage to the pipe system that are then no
longer the responsibility of PFEIFFER.
ÖThe material selected for the parts of the butterfly valve that
come into contact with the media must be suitable for the uti-
lised media, pressures and temperatures.
Dangers due to use of the butterfly valve as an end fitting!
During normal operation, in particular with gaseous, hot and/or
hazardous media, spraying medium can cause hazards.
ÖA blind flange must be assembled on the free connecting
pieces or the butterfly valve must be secured against unau-
thorised actuation.
ÖIf a butterfly valve is used as an end fitting in a pressurised
line is opened, this may only be done with extreme caution
so that the escaping medium does not cause any damage.
Danger due to incorrect installation in case of use as an end
fitting!
The seal is no longer guaranteed if the installation location is
incorrect.
ÖAssemble the butterfly valve such that the fastening ring
fastened on the valve body with cylinder screws or a tension
spring is pressed against the pipe flange.
Figure|1-1: Installation location as an end fitting
WARNING

1-4 EB 14b_EN
January 2022 edition
Subject to technical changes
Safety instructions and safety measures
1.3 Notes regarding possible property
damage
Damage to the butterfly valve due to unsuitable medium prop-
erties!
The butterfly valve is designed for a medium with certain proper-
ties. Other media can damage the butterfly valve.
ÖOnly use a medium that corresponds to the design criteria.
Damage to the butterfly valve due to contamination!
Contamination (e.g. solid particles) in the pipes can damage the
butterfly valve.
ÖThe plant operator is responsible for cleaning the pipes in the
plant.
ÖRinse the pipes prior to commissioning.
ÖObserve the maximum permissible pressure the butterfly
valve and plant.
Damage to the butterfly valve and leakage due to excessively
high or low tightening torques!
The butterfly valve components must be tightened with specific
torques. Deviating torques can lead to butterfly valve leakage or
damage.
ÖExcessively tightened components are subject to increased
wear.
ÖInsufficiently tightened components can cause leakage.
ÖComply with tightening torques, see Chapter “15.1.1.1 Ad-
justable stuffing box”.
Specific aspects in case of use for control purposes!
ÖIn the case of use for control purposes, observe the limitations
indicated above in the data sheets.
Deviation of the breakaway and actuating forces due to
non-actuation of the butterfly valve!
Depending on the period of time of non-actuation, the breaka-
way and actuation forces can deviate considerably from the ac-
tuating power data in the data sheet.
It is recommended to actuate the butterfly valve at regular inter-
vals.
ÖIn consideration of the design, actuation must take place dur-
ing the year.
ÖIndicate the duration of non-actuation when making an en-
quiry, so that this condition is taken into consideration in the
actuator design.
ÖIn the case of retrofitted actuators by the operator, the correct
actuator design as regards the duration of non-actuation is
no longer the responsibility of PFEIFFER.
NOTE
NOTE
Damage to the seal ring or the sealing strip
Turning the valve disc over 0° leads to irreparable damage to the
seal ring or the sealing strip.
ÖOnly operate the valve disc within the range of 0°-90°
Damage to the butterfly valve due to unsuitable tools!
Unsuitable tools can damage the butterfly valve.
ÖSuitable tools are required to work on the butterfly valve, see
Chapter “15.1.3 Tools”.
Damage to the butterfly valve due to unsuitable lubricants!
Unsuitable lubricants can corrode and damage the surface.
ÖThe butterfly valve material requires suitable lubricants, see
Chapter “15.1.2 Lubricants”.
1.4 Warning notes on the device
Warning of moving parts
Figure|1-2: Warning of moving parts
There is a danger of crushing due to the rotary movements of the
actuator- and switching shaft when reaching into the yoke as
long as the pneumatic power is connected to the actuator.
NOTE

2-1
EB 14b_EN
January 2022 edition
Subject to technical changes
Markings on the device
2 Markings on the device
Each butterfly valve usually has the following marking.
Table|2-1: Marking on the type plate and on the body of the butterfly valve
Pos. For Marking Remark
1 Manufacturer PFEIFFER Address see Chapter “15.2 Service”
2 Valve type BR (and number value) e.g. BR14b = Series14b, see the PFEIFFER catalogue
3 Body material e.g. 1.4408 No. of the material standard according to DIN EN 10213-4
4 Size DN (and number value) Number value in [mm], e.g. DN200 / number value in [inches], e.g. NPS8
5 Maximum pressure PN (and number value) Number value in [bar] at room temperature
6
Max. permissible op-
erating temperature TS (and number value) PS are TS are related values here at the max. permissible operating temperature with the
max. permissible operating overpressure, see the Pressure-Temperature Diagram on the data
sheet TB14b
Max. permissible op-
erating pressure PS (and number value)
7 Test pressure PT (and number value) The test pressure must be observed depending on the device
8
Manufacturer number
from 2018 e.g. 381234/001/001
38 1234 /001 /001
Valve no. within the item
Item in the order
Order
Year of manufacture (38=2018, 39=2019, 30=2020,
31=2021 etc.)
Manufacturer number
2009 to 2017 e.g. 211234/001/001
21 1234 /001 /001
Valve no. within the item
Item in the order
Order
Year of manufacture (29=2009, 20=2010, 21=2011,
22=2012 etc.)
Manufacturer number
until 2008 e.g. 2071234/001/001
207 1234 /001 /001
Valve no. within the item
Item in the order
Order
Year of manufacture (205=2005, 206=2006, 207=2007
etc.)
9 Year of manufacture e.g. 2018 Upon customer request, the year of manufacture can also be indicated on the valve
10 Seat material e.g. PTFE/glass Material marking
11 Shaft material e.g. 1.4542/H1150 No. of the material standard according to DIN EN 10088-3
12 Test point number e.g. TEST POINT
F123201-1 Test point numbers are specified by the customer
13 DataMatrix code
14 Conformity CE Conformity is certified separately by Pfeiffer
Code No. 0035 “Notified body” according to EU Directive = TÜV Rheinland Service GmbH
15 Flow direction ÎAttention: see the note in Chapter “5.4 Installing the butterfly valve in the pipe”
16 Direction of rotation Reference to the direction of rotation
Markings on the body and the type plate must be permanent so that the valve remains identifiable.
Info

2-2 EB 14b_EN
January 2022 edition
Subject to technical changes
Markings on the device
2.1 Butterfly valve type plate
Figure|2-1: Marking positions of the type plate on the butterfly valve BR14b / 14c
2.2 Actuator type plate
See the corresponding actuator documentation.
2.3 Turning direction notice sign
The turning direction is indicated on the butterfly valve by a sign.
Figure|2-2: Turning direction notice sign

3-1
EB 14b_EN
January 2022 edition
Subject to technical changes
Design and principle of operation
3 Design and principle of operation
Version
The 14b/14c series butterfly valves have the following proper-
ties:
−BR14b is a cast butterfly valve.
−BR14c (BR74b) is a butterfly valve made of solid material.
−Butterfly valve body made of steel or non-corroding steel
−Body version as a screw-in butterfly valve (lug type) or
clamping butterfly valve (wafer type).
−Valve seals
TypeWTD, soft seal with spring washer preloaded V-ring
packing.
TypeMTD, metal seal with spring washer preloaded V-ring
packing.
TypeWNS, soft seal with adjustable stuffing box.
Function and principle of operation
The BR14b butterfly valves can be flowed through in both direc-
tions.
The position of the valve disc (3) determines the flow with the ar-
ea released opposite of the seal ring (4). Butterfly valves are
sealed between the valve disc (3) and the seal ring (4).
The shaft (2) is sealed towards the outside by a packing (9). This
packing is maintenance-free PTFE V-ring packing, which is
preloaded by spring washers (10) located above the packing
space.
Optionally, this packing can be PTFE meshwork packing, which
is preloaded by an adjustable stuffing box, or spring washer
preloaded graphite packing.
Figure|3-1: Direction of flow
The direction of flow and the differential pressure determine the
breakaway torque for opening the butterfly valve.
The double-eccentric bearing design of the shaft causes the valve
disc to remain in contact with the seat during opening and clos-
ing only over a very small angle of rotation (see Figure3-1). This
reduces wear and increases the service life of the valve. It also
reduces the breakaway torque.
When the medium flows through the butterfly valve in direction A
(see Figure3-1), the valve disc is pressed slightly out of its seat.
This reduces the pre-load force as well as the breakaway torque.
When the medium flows in direction B, the pre-load force in-
creases as the breakaway torque rises.
Fail-safe position
Depending on the mounting of the pneumatic actuator, the but-
terfly valve has two fail-safe positions that are activated when the
pressure is released as well when the supply air fails:
−Butterfly valve with fail-close actuator [FC]:
Upon air failure, the butterfly valve is closed. The butterfly
valve opens when the signal pressure increases, acting
against the force of the springs.
−Butterfly valve with fail-open actuator [FO]:
Upon air failure, the butterfly valve is opened. The butterfly
valve closes when the signal pressure increases, acting
against the force of the springs.
Changing the fail-safe position
The fail-safe position of the actuator can be reversed if required,
for this purpose see the installation and operating instructions for
the respective pneumatic actuator.
Operating elements and functions
The BR14b butterfly valve can be selected in the following ver-
sions:
−With lever and ratchet
−With manual gear
−With diaphragm rotary actuator BR 30a
−With PFEIFFER rotary actuator BR 31a
−With rotary actuators from other manufacturers (for details
see the respective data sheet).
3.1 Variants
−Double stuffing box
−Primary sealing with o-ring
−Flange with groove according to DIN EN 1092 (rows 16 and
25 only)
−Special material
−High-temperature version (> 350°C)
−Low-temperature version (-196°C)

3-2 EB 14b_EN
January 2022 edition
Subject to technical changes
Design and principle of operation
3.2 Additional fittings
Strainer
PFEIFFER recommends installing a strainer in front of the butterfly
valve. A strainer prevents the solid content in the medium from
damaging the butterfly valve.
Bypass and shut-off valve
PFEIFFER recommends installing a shut-off valve in front of the
strainer as well as behind the butterfly valve and to create a by-
pass. By means of the bypass, the entire plant does not have to
be decommissioned during maintenance and repair work on the
butterfly valve.
Insulation
The butterfly valves can be insulated to reduce the passage of
heat energy. Observe the notes in Chapter “ 5 Assembly”.
Test connection
In the version with a double stuffing box, a test connection (e.g.
G¼“) can be used on the upper flange to check the tightness of
the butterfly valve towards the atmosphere.
Grip protection
In the case of conditions of use that require a high level of safety
(e.g. if the butterfly valve is freely accessible to untrained spe-
cialist personnel), PFEIFFER offers a safety guard to prevent the
risk of crushing due to moving parts (actuator- and switching
shaft).
The risk assessment of the plant by the operator will indicate if
the installation of this protective device is required for the safe
operation of the butterfly valve in the plant.
3.3 Attachments
The following accessories are available either individually or in
combinations:
−Locking device
−Switching shaft extension (100 mm standard)
−Pneumatic or electric rotary actuator
−Positioner (with the control valve option)
−Limit switch
−Solenoid valves
−Filter - reducing station
−Jacket heater
Other additional equipment is possible according to specifica-
tions on request.
3.4 Technical data
The type plates of the butterfly valve and actuator offer informa-
tion about the valve version, see Chapter “2 Markings on the de-
vice”.
Detailed information is available in the data sheet TB14b.
3.5 Butterfly valve assembly
The BR14b/14c butterfly valves have design differences in the
various versions so that they cannot be documented in one con-
struction manual.
−Chapter 3.5.1 describes the assembly of the butterfly valve
BR14b-typeWTD and MTD.
−Chapter 3.5.2 describes the assembly of the butterfly valve
BR14b-typeWNS.
−Chapter 3.5.2 describes the assembly of the butterfly valve
BR14c-typeWTD and MTD.
Preparation of the assembly
To assemble the butterfly valve, all parts must be prepared, e.g.
the parts are carefully cleaned and placed on a soft mat (rubber
mat or other). Keep in mind that plastic parts are almost always
very soft and very delicate, and in particular the sealing surfaces
may not be damaged.
Damage due to cold welding of the screws in the body!
PFEIFFER recommends a heavy-duty grease paste (e.g. Gleitmo
805, manufacturer Fuchs) to prevent the cold-welding of the
screws in the bodies.
ÖDo not use this product for butterfly valves with use of oxy-
gen.
ÖA suitable lubricant must be selected for grease-free butterfly
valves, especially for use with oxygen.
The position and arrangement of the individual parts shown in
the drawings must be observed during assembly.
3.5.1 Assembly of butterfly valve BR|14b
with spring washer preloaded V-ring
packing (type WTD and MTD)
3.5.1.1 Preassembly of the butterfly valves
ÖPlace the valve body (1) on a clean surface at working height
so that the bearing area of the shaft is easy to reach.
ÖPush the bearing bushing (12a) as far as it will go into the
bearing bore in the valve body.
Info
NOTE
Info

3-3
EB 14b_EN
January 2022 edition
Subject to technical changes
Design and principle of operation
Figure|3-2: Sectional drawing of the BR14b butterfly valve with spring washer preloaded V-ring packing
Table|3-1: Parts list for the BR14b butterfly valve with spring washer preloaded V-ring packing
Pos. Designation Pos. Designation Pos. Designation
1 Valve body 9 V-ring packing 18 Mating washer
2 Shaft 10 Set of spring washers 19 Tension spring
3 Valve disc 11 Bearing bush 20 Screw
4Seat ring 12 Bearing bush 21 Spacer
Metal seat ring 13 Body sealing 22 Spacer
5 Fastening ring 14 Grooved pin 23 Bonnet sealing
6 Stuffing box 15 Spacer 24 O-ring
7 Bonnet 16 Stud bolt 26 Screw
8 Thrust washer 17 Nut 27 Primary sealing
ÖInsert the spacer (22) into the bearing bore.
Fit butterfly valves with a nominal size of DN300 or NPS12
without a spacer (22).
ÖInsert the valve disc (3) into the body such that the bearing
bores in the disc align with the bearing bore in the body.
ÖInsert the switching shaft (2) through the bearing bores of the
body and the disc.
Info
ÖPush the bearing bushing (12b) over the switching shaft as
far as it will go into the bearing bore in the body.
ÖAfterwards the spacer (21) is inserted.
Fit butterfly valves with a nominal size of DN100 or NPS4 with-
out a spacer (21).
ÖScrew the stud bolts (16) into the body.
ÖInsert the mating washer (18) into the provided recess in the
bonnet (7).
Info

3-4 EB 14b_EN
January 2022 edition
Subject to technical changes
Design and principle of operation
ÖPush also the bonnet sealing (23) onto the bonnet in the same
way as the body sealing (13).
Fit butterfly valves with a nominal size of DN300 or NPS12
without body sealing (23).
ÖInsert the preassembled bonnet (7) into the bearing bore in
the body (1) and adjust with the stud bolts (16).
ÖTighten the bonnet (7) with the nuts (17) evenly and in a
criss-cross pattern.
ÖPush the thrust washer (8) over the free shaft end into position
in the valve body.
ÖPush the PTFE V-ring packing (9) over the switching shaft into
the body bore and press in with an assembly sleeve. Refer to
the sectional drawing Figure3-2 for the arrangement of the
V-ring packing.
ÖPush the thrust piece (15) over the switching valve and press
it into position in the body.
ÖInsert the set of spring washers (10). Refer to the sectional
drawing Figure3-2 for the arrangement of the spring wash-
ers.
ÖPress the bearing bushing (11) into the stuffing box (6).
ÖFit the preassembled stuffing box (6) smoothly over the body
flange and adjust with screws (20).
ÖTighten the screws (20) evenly in a criss-cross pattern.
ÖAdjust the dihedron of the switching shaft parallel to the
valve disc (3) and secure it against further twisting.
Press the switching shaft up against the mating washer (18).
ÖDrill dowel holes for connecting the switching shaft (2) and
the valve disc (3).
ÖPin the disc and shaft with close-tolerance grooved pins (14).
3.5.1.2 Assembling butterfly valves up to
DN|300 (NPS12)
ÖInsert the PTFE seal ring (4) or the metal seat ring including
the corresponding graphite rings (4) into the body.
It is essential to pay attention to cleanliness during assembly.
ÖInsert the o-ring (24) into the fastening ring (5).
ÖPlace the preassembled fastening ring (5) on the seal ring (4)
and press it in with a hydraulic press.
ÖLoosen the bonnet (7).
ÖPush the tension spring (19) into the slot.
ÖFasten the bonnet (7) as previously described.
Info
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Info
3.5.1.3 Assembling butterfly valves from
DN|400 (NPS16)
ÖInsert the PTFE seal ring (4) or the metal seat ring including
the corresponding graphite rings (4) into the body.
It is essential to pay attention to cleanliness during assembly.
ÖPlace the fastening ring (5) on the seal ring (4) and adjust
with the screws (26).
ÖTighten the screws evenly in a criss-cross pattern.
3.5.2 Assembly of butterfly valve BR|14b
with adjustable stuffing box (type
WNS)
3.5.2.1 Preassembly of the butterfly valves
ÖPlace the valve body (1) on a clean surface at working height
so that the bearing area of the shaft is easy to reach.
ÖPush the bearing bushing (12a) as far as it will go into the
bearing bore in the valve body.
ÖInsert the spacer (22) into the bearing bore.
Fit butterfly valves with a nominal size of DN300 or NPS12
without a spacer (22).
ÖInsert the valve disc (3) into the body such that the bearing
bores in the disc align with the bearing bore in the body.
ÖInsert the switching shaft (2) through the bearing bores of the
body and the disc.
ÖPush the bearing bushing (12b) over the switching shaft as
far as it will go into the bearing bore in the body.
ÖInsert the spacer (21).
Fit butterfly valves with a nominal size of DN100 or NPS4 with-
out a spacer (21).
ÖScrew the stud bolts (16) into the body.
ÖInsert the mating washer (18) into the provided recess in the
bonnet (7).
ÖPush also the bonnet sealing (23) onto the bonnet in the same
way as the body sealing (13).
Fit butterfly valves with a nominal size of DN300 or NPS12
without body sealing (23).
Info
Info
Info
Info

3-5
EB 14b_EN
January 2022 edition
Subject to technical changes
Design and principle of operation
ÖInsert the preassembled bonnet (7) into the bearing bore in
the body (1) and adjust with the stud bolts (16).
ÖTighten the bonnet (7) with the nuts (17) evenly and in a
criss-cross pattern.
ÖPush the thrust washer (8) over the free shaft end into position
in the valve body.
ÖPush the PTFE meshwork packing (9) ring by ring over the
shaft into the body bore and press in with an assembly
sleeve.
ÖPress the bearing bushing (11) into the compression spacer
(6).
ÖFit the preassembled compression spacer (6) smoothly over
the shaft and adjust with screws (20) and washers (28).
ÖTighten the screws (20) evenly in a criss-cross pattern.
The required torques for tightening the adjustable compression
spacers can be found in Table 15-1. Torque wrenches must be
used to ensure that the torque is reached.
ÖAdjust the dihedron of the switching shaft parallel to the
valve disc and secure it against further twisting.
Press the switching shaft up against the mating washer (18).
Info
Info
Figure|3-3: Sectional drawing of the BR14b butterfly valve with adjustable stuffing box
Table|3-2: Parts list for the BR14b butterfly valve with adjustable stuffing box
Pos. Designation Pos. Designation Pos. Designation
1 Valve body 9 Packing 19 Tension spring
2 Shaft 11 Bearing bush 20 Screw
3 Valve disc 12 Bearing bush 21 Spacer
4 Seal ring 13 Body sealing 22 Spacer
5 Fastening ring 14 Grooved pin 23 Bonnet sealing
6 Adjustable stuffing box 16 Stud bolt 24 O-ring
7 Bonnet 17 Nut 26 Screw
8 Thrust washer 18 Mating washer 28 Washer

3-6 EB 14b_EN
January 2022 edition
Subject to technical changes
Design and principle of operation
3.5.2.2 Assembling butterfly valves up to
DN|300 (NPS10)
ÖInsert the seal ring (4) into the body.
It is essential to pay attention to cleanliness during assembly.
ÖInsert the o-ring (24) into the fastening ring (5).
ÖPlace the preassembled fastening ring (5) on the seal ring (4)
and press it in with a press.
ÖLoosen the bonnet (7).
ÖPush the tension spring (19) into the slot.
ÖFasten the bonnet as previously described.
3.5.2.3 Assembling butterfly valves from
DN|400 (NPS16)
ÖInsert the seal ring (4) into the body.
It is essential to pay attention to cleanliness during assembly.
ÖPlace the fastening ring (5) on the seal ring (4) and adjust
with the screws (26).
ÖTighten the screws evenly in a criss-cross pattern.
3.5.3 Assembly of butterfly valves BR|14c
(BR|74b) with spring washer preloaded
V-ring packing (type WTD and MTD)
3.5.3.1 Preassembly of the butterfly valves
ÖPlace the valve body (1) on a clean surface at working height
so that the bearing area of the shaft is easy to reach.
ÖPush the bearing bushing (12a) as far as it will go into the
bearing bore in the valve body.
ÖInsert the spacer (22) into the bearing bore.
Fit butterfly valves with a nominal size of DN300 or NPS12
without a spacer (22).
ÖInsert the valve disc (3) into the body such that the bearing
bores in the disc align with the bearing bore in the body.
ÖInsert the switching shaft (2) through the bearing bores of the
body and the disc.
ÖPush the bearing bushing (12b) over the shaft as far as it will
go into the bearing bore in the body.
ÖInsert the spacer (21).
Info
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Info
ÖDrill dowel holes for connecting the switching shaft (2) and
the valve disc (3).
ÖPin the disc and shaft with close-tolerance grooved pins (14).
Fit butterfly valves with a nominal size of DN100 or NPS4 with-
out a spacer (21).
ÖScrew the stud bolts (16) into the body.
ÖInsert the mating washer (18) into the provided recess in the
bonnet (7).
ÖThe bonnet sealing (23) is also pushed onto the bonnet in the
same way as the body sealing (13).
Fit butterfly valves with a nominal size of DN300 or NPS12
without body sealing (23).
ÖInsert the preassembled bonnet into the bearing bore in the
valve body (1) and adjust with the stud bolts.
ÖTighten the bonnet (7) with the nuts (17) evenly and in a
criss-cross pattern.
ÖPush the thrust washer (8) over the free shaft end into position
in the valve body.
ÖPush the PTFE V-ring packing (9) over the shaft into the body
bore and press in with an assembly sleeve. Refer to the sec-
tional drawing Figure3-4 for the arrangement of the V-ring
packing.
ÖPlace the intermediate flange (25) on the body and adjust
with screws (30).
ÖTighten the screws (30) evenly in a criss-cross pattern.
ÖPush the thrust piece (15) over the switching valve and press
it into position in the body.
ÖInsert the set of spring washers (10). Refer to the sectional
drawing Figure3-4 for the arrangement of the spring wash-
ers.
ÖPress the bearing bushing (11) into the stuffing box (6).
ÖFit the preassembled stuffing box smoothly over the interme-
diate flange and adjust with screws (20).
ÖTighten the screws (20) evenly in a criss-cross pattern.
ÖAdjust the dihedron of the switching shaft (2) parallel to the
valve disc and secure it against further twisting.
Press the switching shaft up against the mating washer (18).
ÖDrill dowel holes for connecting the switching shaft (2) and
the valve disc.
ÖPin the disc and shaft with pastel pins (14).
Info
Info
Info

3-7
EB 14b_EN
January 2022 edition
Subject to technical changes
Design and principle of operation
Figure|3-4: Sectional drawing of the BR14c butterfly valve with spring washer preloaded V-ring packing
Table|3-3: Parts list for the BR14c butterfly valve with spring washer preloaded V-ring packing
Pos. Designation Pos. Designation Pos. Designation
1 Valve body 10 Set of spring washers 20 Screw
2 Shaft 11 Bearing bush 21 Spacer
3 Valve disc 12 Bearing bush 22 Spacer
4Metal seat ring 13 Body sealing 23 Bonnet sealing
Seal ring 14 Grooved pin 24 O-ring
5 Fastening ring 15 Spacer 25 Intermediate flange
6 Stuffing box 16 Stud bolt 26 Screw
7 Bonnet 17 Nut 29 O-ring
8 Thrust washer 18 Mating washer 30 Screw
9 V-ring packing 19 Tension spring
3.5.3.2 Assembling butterfly valves up to
DN|300 (NPS12)
ÖInsert the PTFE seal ring (4) or the metal seat ring including
the corresponding graphite rings (4) into the body.
It is essential to pay attention to cleanliness during assembly.
ÖInsert the o-ring (24) into the fastening ring (5).
ÖPlace the preassembled fastening ring (5) on the seal ring
and press it in with a press.
ÖLoosen the bonnet (7).
ÖPush the tension spring (19) into the slot.
ÖFasten the bonnet as previously described.
Info
3.5.3.3 Assembling butterfly valves from
DN|400 (NPS14)
ÖInsert the PTFE seal ring (4) or the metal seat ring including
the corresponding graphite rings (4) into the body.
It is essential to pay attention to cleanliness during assembly.
ÖPlace the fastening ring (5) on the seal ring (4) and adjust
with the screws (26).
ÖTighten the screws (26) evenly in a criss-cross pattern.
Info

3-8 EB 14b_EN
January 2022 edition
Subject to technical changes
Design and principle of operation
3.5.4 Note for installation of actuator ele-
ments
Damage to the butterfly valve due to the incorrect actuator as-
sembly!
Double eccentric butterfly valves must always be closed clock-
wise!
ÖObserve the turning direction when assembling an actuator.
The turning direction is indicated on the butterfly valve by a sign.
Figure|3-5: Turning direction notice sign
NOTE

4-1
EB 14b_EN
January 2022 edition
Subject to technical changes
Shipment and on-site transport
4 Shipment and on-site transport
The work described in this chapter may only be performed by
specialist personnel qualified to perform the corresponding task.
Damage to the butterfly valve due to improper transport and
storage!
ÖButterfly valves must be handled, transported and stored with
care.
4.1 Accepting delivery
Perform the following steps after receiving the goods:
ÖCheck the scope of supply. Compare the delivered goods
with the delivery note.
ÖCheck the supply for transport damage. Report transport
damage to PFEIFFER and the transport company (see the de-
livery note).
4.2 Unpacking the butterfly valve
Carry out the following steps:
ÖUnpack the butterfly valve directly before lifting for installa-
tion into the pipe.
ÖLeave the butterfly valve on the pallet or in the transport con-
tainer for on-site transport.
ÖThe protective caps on the butterfly valve inlet and outlet pre-
vent foreign matter from entering the butterfly valve and
damaging it. Only remove the protective caps prior to instal-
lation in the pipe.
ÖDispose of the packaging properly.
4.3 Transporting and lifting the butterfly valve
Danger due to falling of suspended loads!
Do not stand under suspended loads.
Overturning of the lifting equipment and damage to the load
lifting equipment by exceeding the lifting capacity!
ÖOnly used approved lifting equipment and load lifting equip-
ment whose lifting capacity corresponds at least to the weight
of the butterfly valve including the actuator.
ÖTake the weights from the respective data sheet.
NOTE
DANGER
WARNING
Danger of injury due to the tipping of the butterfly valve!
ÖObserve the centre of gravity of the butterfly valve.
ÖSecure the butterfly valve against tipping and twisting.
Damage to the butterfly valve due to improper fastening of the
sling!
The screwed-in lifting eyes on PFEIFFER actuators are used only
for actuator assembling and disassembling as well as for lifting
the actuator without the butterfly valve. These lifting eyes are not
intended for lifting the complete butterfly valve.
ÖWhen lifting the butterfly valve, make sure that the entire load
is carried by the sling that is fastened to the butterfly valve
body.
ÖDo not fasten the load-bearing sling to the actuator, hand
wheel or other components.
4.3.1 Transporting
The butterfly valve can be transported using lifting equipment
such as a crane or a forklift.
ÖLeave the butterfly valve on the pallet or in the transport con-
tainer for transport.
ÖButterfly valves that weigh more than approx. 10kg should
be transported on a pallet (or supported similarly) (also to the
installation site). The packaging should protect the butterfly
valves from damage.
ÖComply with the transport conditions.
Transport conditions
ÖProtect the butterfly valve against external influences, such as
impacts.
ÖDo not damage the corrosion protection (paint, surface coat-
ing). Repair damage immediately.
ÖProtect the butterfly valve against moisture and dirt.
4.3.2 Lifting
When installing the butterfly valve in the pipe, larger butterfly
valves can be lifted using lifting equipment such as a crane or
forklift.
Conditions for lifting
ÖUse a hook with a safety clamp as the suspension element so
that the sling cannot slip off the hook during lifting and trans-
port, see Figure4-1.
ÖSecure the sling against shifting and slipping off.
ÖFasten the sling such that it can be removed again after in-
stallation in the pipe.
ÖAvoid swinging and tipping the butterfly valve.
WARNING
NOTE

4-2 EB 14b_EN
January 2022 edition
Subject to technical changes
Shipment and on-site transport
Figure|4-1: Lifting points of the BR14b butterfly valve
ÖIn the case of interruptions in work, do not leave the lifting
equipment suspended in the air for a long period of time.
ÖLift the butterfly valves aligned in the same direction in which
they will be installed in the pipe.
ÖAlways lift the butterfly valve in the centre of gravity of the
load to prevent uncontrolled tipping.
ÖMake sure that in the case of butterfly valves, any slings be-
tween the lifting eyes on the rotary actuator and suspension
element are not loaded. These slings are used only to secure
the load against turning over while lifting. Before lifting the
butterfly valve, pretension this sling so it is taut.
Danger due to incorrect lifting and transport!
The lifting points for the lifting slings shown in the schematic
drawing serve as examples for most valve variants. On site the
conditions for lifting and transporting the valve can change how-
ever.
ÖThe operator makes sure that the valve is lifted and transport-
ed safely.
DANGER
4.3.3 Lifting points on the body
ÖAttach the eyebolts in the flange bores in the body. When
doing so, make sure that the carrying capacity of the utilised
eyebolts is sufficient.
ÖConnect the lifting sling with hooks to the eyebolts. Make sure
that the hook is seated properly in the eyebolts.
ÖFasten a lifting sling to each suspension element (e.g. hook)
of the crane or forklift, see Figure4-1. When doing so, en-
sure the safety, bearing capacity and length of the lifting
slings.
ÖIn the case of an actuator with a lifting eye: fasten additional
lifting slings to the lifting eye on the actuator and on the sus-
pension element.
ÖLift the butterfly valve carefully. Check if the load lifting
equipment holds.
ÖMove the butterfly valve at a constant speed to the installation
site.
ÖInstall the butterfly valve in the pipe, see chapter 5.4
ÖAfter installation in the pipe: check that the flanges are firmly
tightened and that the butterfly valve holds in the pipe.
ÖRemove the lifting slings.