KSB ECOLINE GT 40 User manual

Gate Valve
ECOLINE GT 40
Operating Manual

Legal information/Copyright
Operating Manual ECOLINE GT 40
All rights reserved. The contents provided herein must neither be distributed, copied, reproduced,
edited or processed for any other purpose, nor otherwise transmitted, published or made available to a
third party without the manufacturer's express written consent.
Subject to technical modification without prior notice.
© KSB SE & Co. KGaA, Frankenthal 14/08/2020

Contents
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Contents
Glossary .................................................................................................................................................. 5
1 General.................................................................................................................................................... 6
1.1 Principles ...........................................................................................................................................................6
1.2 Installation of partly completed machinery....................................................................................................6
1.3 Target group.....................................................................................................................................................6
1.4 Other applicable documents............................................................................................................................6
1.5 Symbols .............................................................................................................................................................6
2 Safety...................................................................................................................................................... 7
2.1 Key to safety symbols/markings.......................................................................................................................7
2.2 General..............................................................................................................................................................7
2.3 Intended use .....................................................................................................................................................8
2.4 Personnel qualification and training...............................................................................................................8
2.5 Consequences and risks caused by non-compliance with this manual .........................................................8
2.6 Safety awareness ..............................................................................................................................................9
2.7 Safety information for the operator/user.......................................................................................................9
2.8 Safety information for maintenance, inspection and installation ................................................................9
2.9 Unauthorised modes of operation..................................................................................................................9
3 Transport/Storage/Disposal ................................................................................................................ 10
3.1 Checking the condition upon delivery..........................................................................................................10
3.2 Transport.........................................................................................................................................................10
3.3 Storage/preservation......................................................................................................................................11
3.4 Return to supplier...........................................................................................................................................12
3.5 Disposal ...........................................................................................................................................................12
4 Valve Description ................................................................................................................................. 13
4.1 General description ........................................................................................................................................13
4.2 Product information.......................................................................................................................................13
4.3 Marking...........................................................................................................................................................13
4.4 Design details..................................................................................................................................................14
4.5 Information on the mechanical components ...............................................................................................14
4.6 Function ..........................................................................................................................................................15
4.7 Scope of supply...............................................................................................................................................15
4.8 Noise characteristic.........................................................................................................................................15
5 Installation at Site................................................................................................................................ 16
5.1 General information/Safety regulations .......................................................................................................16
5.2 Installation position and location..................................................................................................................16
5.3 Preparing the valve ........................................................................................................................................17
5.4 Piping ..............................................................................................................................................................17
5.5 Valves with actuator.......................................................................................................................................19
5.6 Insulation ........................................................................................................................................................20
6 Commissioning/Start-up/Shutdown................................................................................................... 21
6.1 Commissioning/start-up .................................................................................................................................21
6.2 Operating limits..............................................................................................................................................23
6.3 Shutdown........................................................................................................................................................24
6.4 Returning to service .......................................................................................................................................24
7 Servicing/Maintenance........................................................................................................................ 25
7.1 Safety regulations...........................................................................................................................................25
7.2 Servicing/Inspection........................................................................................................................................25
7.3 Tightening torques.........................................................................................................................................28
8 Related Documents.............................................................................................................................. 29
8.1 General assembly drawing with list of components ....................................................................................29

Contents
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8.2 Dimensions and weights ................................................................................................................................31
8.3 Installation instructions..................................................................................................................................31
9 EU Declaration of Conformity for ECOLINEGT40............................................................................. 34
Index ..................................................................................................................................................... 35

Glossary
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Glossary
DN
Nominal size; numeric designation of size of the
components in a piping system
PN
Nominal pressure; a characteristic upon which
standards regarding piping, piping components,
valves, etc., are based
Pressure Equipment Directive (PED)
The 2014/68/EU Directive sets out the
requirements to be met by pressure equipment
intended to be placed on the market in the
European economic area.

1 General
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1 General
1.1 Principles
This operating manual is valid for the type series and variants indicated on the front
cover.
The operating manual describes the proper and safe use of this equipment in all
phases of operation.
In the event of damage, immediately contact your nearest KSB sales organisation
responsible to maintain the right to claim under warranty.
1.2 Installation of partly completed machinery
To install partly completed machinery supplied by KSB refer to the sub-sections under
Installation at Site. (ðSection5,Page16)
1.3 Target group
This operating manual is aimed at the target group of trained and qualified specialist
technical personnel.
1.4 Other applicable documents
Table1: Overview of other applicable documents
Document Contents
Type series booklet Valve description
Flow characteristics1) Information on Kv and zeta values
General assembly drawing2) Sectional drawing of the valve
Sub-supplier product literature3) Operating manuals and other product literature
for the accessories
Observe the relevant manufacturer's product literature for the accessories.
1.5 Symbols
Table2: Symbols used in this manual
Symbol Description
✓Conditions which need to be fulfilled before proceeding with the
step-by-step instructions
⊳Safety instructions
⇨Result of an action
⇨Cross-references
1.
2.
Step-by-step instructions
Note
Recommendations and important information on how to handle
the product
1If any
2If inclusion in the scope of supply has been agreed; otherwise refer to the type series booklet.
3If inclusion in the scope of supply has been agreed.

2 Safety
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2 Safety
!DANGER
All the information contained in this section refers to hazardous situations.
In addition to the present general safety information the action-related safety
information given in the other sections must be observed.
2.1 Key to safety symbols/markings
Table3: Definition of safety symbols/markings
Symbol Description
!DANGER
DANGER
This signal word indicates a high-risk hazard which, if not avoided,
will result in death or serious injury.
!WARNING
WARNING
This signal word indicates a medium-risk hazard which, if not
avoided, could result in death or serious injury.
CAUTION
CAUTION
This signal word indicates a hazard which, if not avoided, could
result in damage to the machine and its functions.
General hazard
In conjunction with one of the signal words this symbol indicates a
hazard which will or could result in death or serious injury.
Electrical hazard
In conjunction with one of the signal words this symbol indicates a
hazard involving electrical voltage and identifies information about
protection against electrical voltage.
Machine damage
In conjunction with the signal word CAUTION this symbol indicates
a hazard for the machine and its functions.
2.2 General
▪This operating manual contains general installation, operating and maintenance
instructions that must be observed to ensure safe operation of the system and
prevent personal injury and damage to property.
▪Comply with all the safety instructions given in the individual sections of this
operating manual.
▪The operating manual must be read and understood by the responsible specialist
personnel/operators prior to installation and commissioning.
▪The contents of this operating manual must be available to the specialist
personnel at the site at all times.
▪Information and markings attached directly to the product must always be
complied with and kept in a perfectly legible condition at all times. This applies
to, for example:
– Manufacturer
– Type designation
– Nominal pressure
– Nominal size
– Flow direction arrow
– Year of construction
– Valve body material
▪The operator is responsible for ensuring compliance with all local regulations not
taken into account.
▪The design, manufacture and testing of the valve are subject to a QM system to
DINENISO9001 as well as the current European Pressure Equipment Directive.

2 Safety
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▪Bear in mind that valves exposed to creep-rupture conditions have a limited
service life and have to meet the applicable regulations stipulated in the
technical codes.
▪In the case of customised special variants, further restrictions may apply with
regard to the operating mode and service life. Refer to the relevant sales
documentation for applicable limitations.
▪The operator is responsible for ensuring compliance with all local regulations not
taken into account.
▪The operator is responsible for any eventualities or incidents which may occur
during installation performed by the customer, operation and maintenance.
2.3 Intended use
▪Only operate valves which are in perfect technical condition.
▪Do not operate the valve in partially assembled condition.
▪Only use the valve for fluids specified in the product literature. Take the design
and material variant into account.
▪Only operate the valve within the operating limits described in the other
applicable documents.
▪The valve's design and rating are based on predominantly static loading in
accordance with the codes applied. Consult the manufacturer if the valve is
subjected to dynamic loads or any other additional influences.
▪Consult the manufacturer about any other modes of operation not described in
the product literature.
▪Do not use the valve as a foothold.
2.3.1 Prevention of foreseeable misuse
▪Never exceed the permissible operating limits (temperature, etc.) specified in the
data sheet or product literature.
▪Observe all safety information and instructions in this manual.
2.4 Personnel qualification and training
▪All personnel involved must be fully qualified to transport, install, operate,
maintain and inspect the product this manual refers to and be fully aware of the
interaction between the valve and the system.
▪The responsibilities, competence and supervision of all personnel involved in
transport, installation, operation, maintenance and inspection must be clearly
defined by the operator.
▪Deficits in knowledge must be rectified by means of training and instruction
provided by sufficiently trained specialist personnel. If required, the operator can
commission the manufacturer/supplier to train the personnel.
▪Training on the valve must always be supervised by specialist technical personnel.
2.5 Consequences and risks caused by non-compliance with this manual
▪Non-compliance with these operating instructions will lead to forfeiture of
warranty cover and of any and all rights to claims for damages.
▪Non-compliance can, for example, have the following consequences:
– Hazards to persons due to electrical, thermal, mechanical and chemical
effects and explosions
– Failure of important product functions
– Failure of prescribed maintenance and servicing practices
– Hazard to the environment due to leakage of hazardous substances

2 Safety
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2.6 Safety awareness
In addition to the safety information contained in this operating manual and the
intended use, the following safety regulations shall be complied with:
▪Accident prevention, health regulations and safety regulations
▪Explosion protection regulations
▪Safety regulations for handling hazardous substances
▪Applicable standards, directives and laws
2.7 Safety information for the operator/user
Actuator-operated valves are intended for use in areas which cannot be accessed by
unauthorised persons. Operation of these valves in areas which can be accessed by
unauthorised persons is only permitted if appropriate protective devices are fitted at
the site. This must be ensured by the operator.
▪Fit protective equipment (e.g. contact guards) supplied by the operator for hot,
cold or moving parts, and check that the equipment functions properly. Do not
touch rotating parts.
▪Do not remove any protective equipment (e.g. contact guards) during operation.
▪Provide the personnel with protective equipment and make sure it is used.
▪Contain any leakage of hazardous fluids (e.g. explosive, toxic, hot) so as to avoid
any danger to persons and the environment. Adhere to all relevant laws.
▪Eliminate all electrical hazards. (In this respect refer to the applicable national
safety regulations and/or regulations issued by the local energy supply
companies.)
2.8 Safety information for maintenance, inspection and installation
▪Modifications or alterations of the valve require the manufacturer's prior
consent.
▪Use only original spare parts or parts/components authorised by the
manufacturer. The use of other parts/components can invalidate any liability of
the manufacturer for resulting damage.
▪The operator ensures that maintenance, inspection and installation are
performed by authorised, qualified specialist personnel who are thoroughly
familiar with the manual.
▪Carry out work on the valve during standstill only.
▪The valve body must have cooled down to ambient temperature.
▪The pressure in the valve body must have been released and the valve must have
been drained.
▪When taking the valve out of service always adhere to the procedure described
in the manual.
▪Decontaminate valves which handle fluids posing a health hazard.
▪Protect the valve body and body bonnet/cover from any impacts.
▪As soon as the work has been completed, re-install and re-activate any safety-
relevant devices and protective devices. Before returning the product to service,
observe all instructions on commissioning.
2.9 Unauthorised modes of operation
▪The valve is operated outside the limits stated in the operating manual.
▪The valve is not operated in accordance with the intended use.
▪Use gate valves exclusively for fully open or fully closed service. An intermediate
position (throttling function) is not permitted.

3 Transport/Storage/Disposal
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3 Transport/Storage/Disposal
3.1 Checking the condition upon delivery
1. On transfer of goods, check each packaging unit for damage.
2. In the event of in-transit damage, assess the exact damage, document it and
notify KSB or the supplying dealer and the insurer about the damage in writing
immediately.
3.2 Transport
Transport the valve in the closed position.
DANGER
The valve could slip out of the suspension arrangement
Danger to life from falling parts!
▷Only transport the valve in the specified position.
▷Never attach lifting accessories to the handwheel.
▷Observe the information on weights, centre of gravity and fastening points.
▷Observe the applicable local accident prevention regulations.
▷Use suitable, permitted lifting accessories, e.g. self-tightening lifting tongs.
▷For actuated valves observe the relevant actuator operating manual. Transport
aids on the actuator are not suitable for suspending the entire valve/actuator
assembly.
To transport the valve, suspend it from the lifting tackle as illustrated.

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Fig.1: Transporting the valve
3.3 Storage/preservation
If commissioning is to take place some time after delivery, we recommend that the
following measures be taken for storing the valve:
CAUTION
Incorrect storage
Damage due to dirt, corrosion, humidity and/or frost!
▷Close the valve using little force and store in the closed position.
▷Store the valve in a frost-proof room where the atmospheric humidity is as
constant as possible.
▷Protect the valve from dust during storage, e.g. with suitable caps or foils.
▷Protect the valve from contact with solvents, lubricants, fuels or other
chemicals.
▷Store the valve in vibration-free conditions.
Storage and/or temporary storage of the valves must ensure that even after a
prolonged period of storage the valves’ function is not impaired.
The temperature in the storage room must not exceed +40°C.
If properly stored indoors, the equipment is protected for a maximum of 12months.
For storing a valve which has already been operated, observe the measures to be
taken for shutdown. (ðSection6.3,Page24)

3 Transport/Storage/Disposal
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NOTE
If the valves are fitted with actuators, ensure that the actuator's operating manual
is also observed.
3.4 Return to supplier
1. Drain the valve as described in the manual.
2. Flush and clean the valve, particularly if it has been used for handling noxious,
explosive, hot or other hazardous fluids.
3. If the valve has handled fluids whose residues could lead to corrosion damage in
the presence of atmospheric humidity or could ignite upon contact with oxygen
also neutralise the valve and blow through with anhydrous inert gas to ensure
drying.
4. When returning valves used for handling Fluids in Group1 always complete and
enclose a certificate of decontamination.
Indicate any safety measures and decontamination measures taken.
NOTE
If required, a blank certificate of decontamination can be downloaded from the
following web site: www.ksb.com/certificate_of_decontamination
3.5 Disposal
WARNING
Fluids handled, consumables and supplies which are hot or pose a health hazard
Hazard to persons and the environment!
▷Collect and properly dispose of flushing fluid and any residues of the fluid
handled.
▷Wear safety clothing and a protective mask if required.
▷Observe all legal regulations on the disposal of fluids posing a health hazard.
1. Dismantle the valve.
Collect greases and other lubricants during dismantling.
2. Separate and sort the valve materials, e.g. by:
- Metals
- Plastics
- Electronic waste
- Greases and other lubricants
3. Dispose of materials in accordance with local regulations or in another
controlled manner.

4 Valve Description
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4 Valve Description
4.1 General description
▪Gate valve with bolted bonnet
Valve for shutting off fluids in industrial plant, process engineering, and
shipbuilding.
4.2 Product information
4.2.1 Product information as per Regulation No. 1907/2006(REACH)
For information as per chemicals Regulation (EC) No. 1907/2006 (REACH), see http://
www.ksb.com/reach.
4.2.2 Product information as per Pressure Equipment Directive 2014/68/EU(PED)
The valves satisfy the safety requirements of AnnexI of the European Pressure
Equipment Directive 2014/68/EU(PED) for fluids in Groups1and2.
4.2.3 Product information as per Directive 2014/34/EU (ATEX)
The valves do not have a potential internal source of ignition and can be used in
potentially explosive atmospheres, GroupII, category2 (zones 1+21) and category3
(zones 2+22) to ATEX2014/34/EU.
4.3 Marking
Table4: General marking
Nominal size DN ...
Nominal pressure class or max. permissible pressure/temperature PN ... / ... bar / ...
°C
Manufacturer KSB
Type series/model or order number ECOLINE...
Year of construction 20..
Material .......
Traceability of the material .......
CE marking PED
Identification number of the notified body 0036
Customer's marking e.g. plant/
system No., etc.
In accordance with the current European Pressure Equipment Directive (PED) the
valves are marked as shown in the following table:
Fluids in Groups 1 and 2
Class PN DN
≤25 32 40 50 65 80 100 125 150 ≥200
10
16
≥
25
≥≥40
150
300
Fig.2: Fluids in Groups 1 and 2

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Fluid groups In accordance with Article13 Para.1 of the European Pressure Equipment Directive
(PED) 2014/68/EU, Group1 comprises all fluids posing physical or health hazards, e.g.
fluids defined as
▪Explosive
▪Extremely flammable
▪Highly flammable
▪Very toxic
▪Toxic
▪Oxidising
Group 2 comprises all other fluids not referred to in Group 1.
4.4 Design details
Design
▪Bolted bonnet
▪Non-rotating stem with external screw
▪Back seat
▪Flexible wedge
▪Yoke head suitable for mounting electric actuators (DINISO5210)
Variants
▪Stem protecting tube
▪Stem protecting tube with position indicator
▪Stem protecting tube with position switch
▪Bypass
▪Installation kit for electric actuators to ENISO5210 TypeA
▪Spur gear
▪Bevel gear
▪Electric actuators
▪Body seating surfaces made of wear and corrosion resistant Stellite.
▪Other flange designs
▪Other butt weld end versions
▪Version in compliance with TA-Luft (German Clean Air Act) to VDI 2440 for
temperatures up to 400 °C
4.5 Information on the mechanical components
4.5.1 Moving parts
The valve/actuator combination comprises moving parts which are not fully enclosed.
Depending on the type and design, these include the following:
▪Stem
▪Limit switches
▪Coupling
▪Other force-transmitting equipment
Depending on the actuator type and design, further moving parts may be present,
e.g. emergency handwheels turning along with the actuator.

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4.5.2 Self-locking function
As standard, the trapezoidal stem thread is self-locking. For special designs, e.g.
multiple threads, the self-locking function is taken over by the actuator assembly.
The self-locking effect may be reduced over time due to wear.
4.5.3 Uncontrolled movements
In the following cases, the valve disc's position may change in an uncontrolled
manner due to the system's pressure with resultant effects on the plant:
▪Control failure
▪Signal error
▪Power supply failure during operation
▪Incorrect actuator setting
▪De-activation of the position switches in the actuator
4.6 Function
Design The gate valve consists of the pressure-retaining parts, i.e. body 100 and yoke 166,
the functional unit (stem 200 and flexible wedge 361), and the actuating element.
Sealing Body 100 and yoke 166 are joined by studs 902.1 and hexagon nuts 920.1, and the
joint is sealed off by a joint ring 411.
The functional unit mainly consists of flexible wedge 361, stem 200 and the actuating
element, i.e. handwheel 961 or actuator.
The seating faces of body 100 and of flexible wedge 361 are hard-faced. Gland
packing 461, which seals off stem 200, is tightened via gland follower 452 by means
of eyebolts 900 and hexagon nuts 920.2.
4.7 Scope of supply
The following items are included in the scope of supply:
▪Valve
▪Valve operating manual
4.8 Noise characteristic
When operated within the operating conditions documented in the order
confirmation and/or characteristic curves booklets, the valve will not exceed a sound
pressure level of 80dB in acc. with IEC60534-8-4. Unfavourable piping layouts or off-
design operating conditions may give rise to physical phenomena like cavitation,
resulting in significantly higher sound pressure levels.

5 Installation at Site
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5 Installation at Site
5.1 General information/Safety regulations
The consultant, construction company or operator are responsible for positioning
and installing the valves. Planning errors and installation errors may impair the
reliable function of the valves and pose a substantial safety hazard.
DANGER
Dead-end valve
High-pressure hazard!
Risk of burns!
▷Protect the valve against unauthorised and/or unintentional opening.
WARNING
Exposed rotating parts
Risk of injury!
▷Do not touch rotating parts.
▷When the equipment is in operation, perform any work with utmost caution.
▷Take suitable precautions, e.g. provide safety covers.
CAUTION
Improper installation
Damage to the valve!
▷Protect the body and body bonnet/cover from any impacts.
5.2 Installation position and location
For gate valves installed in horizontal pipes a vertical stem position is recommended
(handwheel or actuator on top, see position (a) shown below). Installation with the
stem in an inclined or horizontal position, e.g. in vertical pipes (positions b, c, g, h) is
permitted. In this case, however, the actuator must be adequately supported at the
site. Avoid any installation positions with the actuator hanging downward (positions
d, e, f – risk of dirt ingress into the packing area via the back seat).
(a)
(b)
(h)
(g) (c)
(f) (d)
(e)
Fig.3: Gate valve installation positions

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Make sure that the non-rising handwheel can be operated and that there is sufficient
clearance available for the rising stem.
The position and flow direction must be in accordance with the manufacturer’s data.
The valve must not be fitted downstream of tees and level or three-dimensional
double bends.
NOTE
For the valves to reach the documented Kv values, the flow direction must
correspond to the flow direction arrow.
5.3 Preparing the valve
CAUTION
Outdoor installation
Damage due to corrosion!
▷Provide weather-proof protection to protect the valve against moisture.
1. Thoroughly clean, flush and blow through all vessels, piping and connections.
2. Remove the valve's flange covers before installing it in the piping.
3. Check that the inside of the valve is free from any foreign objects. Remove any
foreign objects.
4. If required, install a strainer in the piping.
5.4 Piping
CAUTION
Painting of the piping
Valve function impaired!
Loss of important information provided on the valve!
▷Protect stem and plastic components prior to applying paint.
▷Protect printed name plates prior to applying paint.
▪Lay the piping in such a way that detrimental thrust forces and bending forces
are kept away from the valve body.
▪For any further work (e.g. construction work, cleaning measures) protect the
piping against contamination (e.g. by covering it with a tarpaulin).
5.4.1 Flange connection
Fasteners Only use fasteners (e.g. to DINEN1515-4) and flange gaskets (e.g. to DINEN1514)
made of materials approved for the respective nominal valve size. Always use all
flange bolt holes provided when connecting the valve to the pipe.
Flange connection üThe mating flange faces are clean and undamaged.
üVerify that the piping is correctly aligned and the flanges are parallel.
1. Align the valve between the pipe flanges.
2. Use an appropriate tool to evenly tighten the fasteners crosswise.
5.4.2 Welding the valve into the piping
Responsibility for welding the valve into the piping and for any heat treatment
required lies with the commissioned construction company or the plant operator.

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CAUTION
Weld beads, scale and other impurities
Damage to the valve!
▷Take suitable measures to protect the valve against impurities.
▷Remove any impurities from the piping.
▷If necessary, install a strainer.
CAUTION
Incorrect earthing during welding work on the piping
Damage to the valve (scorching)!
▷Fully open the valve during welding. If the valve is equipped with a back seat,
run the obturator to an intermediate position.
▷Never earth the electric welding equipment on the valve's functional parts.
CAUTION
Non-compliance with the max. permissible application temperature
Damage to the valve!
▷Complete the weld seam in several steps to ensure that the temperature in the
middle of the body does not exceed the max. permissible application
temperature.
NOTE
For valves with socket weld ends, comply with the insertion depth given in the
applicable technical code. A gap between the pipe end and the base of the weld
socket prevents impermissible stress on the weld.
▪Provide sufficient clearance for removal of the valve and, if necessary, the
actuator.
▪Maintain cleanliness when welding the valve into the piping. No contaminants
must enter the inside of the valve body; otherwise the seat/disc interface may
become damaged.
üThe valve is installed in accordance with the appropriate pipeline isometry.
üComply with the welding processes, filler metals and welding data laid down in
the documented welding procedure.
üThe weld ends of valve and pipes have been centred.
1. Run the valve disc to the middle position prior to welding.
2. Check that the butt weld ends are clean and undamaged. Clean them if
necessary.
3. Weld the valve into the piping in such a way that the valve/pipe welds are not
subjected to stresses, strains or torsion. During the welding process, ensure
constancy of the gap to the pipeline without radial offset.
4. When installing the valve with the stem in a horizontal position, adequately
support the weight of the actuator or gearbox.

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5.5 Valves with actuator
WARNING
Impermissible loads resulting from operating conditions, add-on parts and valve-
mounted components, e.g. actuators
Leakage from or rupture of the valve body!
▷Lay the piping in such a way that detrimental thrust forces and bending forces
are kept away from the valve body.
▷Additional loads, e.g. traffic, wind or earthquakes are not taken into account
for standard variants; these require a separate design.
▷Support the valve including add-on parts and valve-mounted components.
Electric actuators
DANGER
Unqualified personnel performing work on valves with actuator
Danger of death from electric shock!
▷Ensure that connection to the power supply and the process control system is
performed by a trained electrician.
▷Observe regulations IEC60364 and, for explosion-proof models, .
WARNING
Incorrect connection to the mains
Damage to the mains network, short circuit!
▷Observe the technical specifications of the local energy supply companies.
CAUTION
Change of limit switch points
Impairment of the functional reliability!
Damage to the actuator!
▷Never change the pre-set limit switch points.
Mounted actuators are factory-set and ready for operation.
Electric actuators are factory-set ready for operation and wired as follows:
▪Valve CLOSED: travel-dependent
▪Valve OPEN: travel-dependent
The circuit diagrams are located in the terminal boxes.
Depending on the mass to be accelerated, electric actuators may be subject to a
corresponding overtravel effect. Take into account this overtravel effect when setting
the actuator.
NOTE
If the valves are fitted with actuators, ensure that the actuator's operating manual
is also observed.

5 Installation at Site
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5.6 Insulation
WARNING
Cold/hot piping and/or valve
Risk of thermal injury!
▷Insulate the valve.
▷Fit warning signs.
CAUTION
Condensation forming in air-conditioning systems, cooling systems and
refrigerating systems
Ice forming!
Actuating element blockage!
Damage due to corrosion!
▷Insulate the valve to prevent diffusion.
CAUTION
Outdoor installation
Damage due to corrosion!
▷Provide weather-proof protection to protect the valve against moisture.
For any insulation fitted on the valve observe the following:
▪The valve's function must not be impaired.
▪The sealing areas at the bonnet/cover joint and at the stem passage (gland
packing) must be directly accessible and visible.