Burkert 2000 INOX User manual

Operating Instructions
Bedienungsanleitung
Manuel d‘utilisation
Type 2000
INOX
2/2-way angle seat valve
2/2-Wege Schrägsitzventil
Vanne à siège incliné 2/2 voies

We reserve the right to make technical changes without notice.
Technische Änderungen vorbehalten.
Sous réserve de modifications techniques.
© Bürkert Werke GmbH & Co. KG, 2010 - 2018
Operating Instructions 1805/04_EU-ML_00805856 / Original DE

3
1 THE OPERATING INSTRUCTIONS....................................... 4
1.1 Symbols....................................................................... 4
1.2 Denitionoftheterm'Device' ..................................... 4
2 AUTHORIZED USE ............................................................... 5
3 BASIC SAFETY INSTRUCTIONS.......................................... 5
4 GENERAL INFORMATION .................................................... 6
4.1 Contact address.......................................................... 6
4.2 Warranty ...................................................................... 6
4.3 InformationontheInternet.......................................... 6
5 PRODUCT DESCRIPTION .................................................... 7
5.1 General description ..................................................... 7
5.2 Properties .................................................................... 7
6 TECHNICAL DATA................................................................. 7
6.1 Conformity................................................................... 7
6.2 Standards .................................................................... 7
6.3 Operating conditions ................................................... 7
6.4 General technical data................................................. 9
7 STRUCTURE AND FUNCTION ........................................... 10
7.1 Structure.................................................................... 10
7.2 Function..................................................................... 10
8 ASSEMBLY.......................................................................... 10
8.1 Safetyinstructions..................................................... 10
8.2 Beforeinstallation...................................................... 11
8.3 Installation ................................................................. 11
8.4 Pneumatic connection............................................... 13
9 START-UP............................................................................ 14
9.1 Safetyinstructions..................................................... 14
10 MAINTENANCE, CLEANING .............................................. 15
10.1 Safetyinstructions..................................................... 15
10.2 Maintenance work ..................................................... 15
10.3 Cleaning .................................................................... 15
10.4 Recommended auxiliary materials ............................ 15
11 REPAIRS.............................................................................. 16
11.1 Replacing the valve set ............................................. 16
12 MALFUNCTIONS ................................................................ 19
13 SPARE PARTS..................................................................... 20
14 TRANSPORTATION, STORAGE, DISPOSAL ...................... 21
Contents
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Type 2000 INOX

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The operating instructions
1 THE OPERATING
INSTRUCTIONS
Theoperatinginstructionsdescribetheentirelifecycleofthedevice.
Keep these instructions in a location which is easily accessible
to every user and make these instructions available to every new
ownerofthedevice.
The operating instructions contain important safety
information!
Failure to observe these instructions may result in hazardous
situations.
▶The operating instructions must be read and understood.
1.1 Symbols
DANGER!
Warns of an immediate danger!
▶Failuretoobservethewarningwillresultinafatalorserious
injury.
WARNING!
Warns of a potentially dangerous situation!
▶Failure to observe the warning may result in serious injuries
or death.
CAUTION!
Warns of a possible danger!
▶Failure to observe this warning may result in a moderate or
minor injury.
NOTE!
Warns of damage to property!
▶Failure to observe the warning may result in damage to the
device or the equipment.
Indicatesimportantadditionalinformation,tipsand
recommendations.
Referstoinformationintheseoperatinginstructionsorin
other documentation.
→Designates a procedure which you must carry out.
1.2 Denition of the term 'Device'
Intheseinstructions,theterm"device"alwaysreferstotheangle
seat valve Type 2000 INOX.
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Authorized use
2 AUTHORIZED USE
Non-authorized use of the angle seat valve Type 2000 INOX
(designated as device in the following) can be dangerous to
people, nearby equipment and the environment.
▶Thedeviceisdesignedforthecontrolledow-rateofliquid
and gaseous media.
▶In the potentially explosion-risk area the device may be used
only according to the specication on the separate Ex type
label.Foruseobservetheadditionalinformationenclosedwith
thedevicetogetherwithsafetyinstructionsfortheexplosion-
risk area.
▶DeviceswithoutaseparateExtypelabelmaynotbeusedin
a potentially explosive area.
▶Useaccordingtotheauthorizeddata,operatingconditions,
andconditionsofusespeciedinthecontractdocuments
and operating instructions. These are described in chapter "6
Technicaldata".
▶Use the device only in conjunction with third-party devices
and components recommended and authorized by Bürkert.
▶Correcttransportation,storage,andinstallation,aswellas
carefuluseandmaintenanceareessentialforreliableand
faultlessoperation.
▶Use the device only as intended.
3 BASIC SAFETY INSTRUCTIONS
Thesesafetyinstructionsdonotmakeallowanceforany
•Contingenciesandeventswhichmayariseduringtheinstallation,
operation,andmaintenanceofthedevices.
•Localsafetyregulations–theoperatorisresponsibleforobserving
theseregulations,alsoinrelationtotheinstallationpersonnel.
Danger – high pressure!
▶Turnothepressureandventthelinesbeforeloosening
lines or valves.
Risk of crushing from moving pneumatic connection!
▶Whenopeningandclosingthedevice,donottouchthe
moving pneumatic connection.
▶Do not reach into the area immediately above and below the
control air connection.
Risk of water hammer when ow inlet over seat!
•Whenowinletoverseat,donotuseangleseatvalveforliquid
mediaduetotheriskofwaterhammer.
Risk of burns/risk of re if used during long-term operation
through hot device surface!
▶Do not touch the device with bare hands.
▶Keepthedeviceawayfromhighlyammablesubstancesand
media.
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General information
General hazardous situations.
To prevent injuries:
•Supply only media to the media connections which have been
speciedasowmediainthechapter"TechnicalData".
▶Do not physically stress the housing (e.g. by placing objects
on it or standing on it).
▶Ensurethatthesystemcannotbeactivatedunintentionally.
▶Onlytrainedtechniciansmayperforminstallationandmain-
tenance work.
▶Afteraninterruptioninthepowersupplyorpneumatic
supply,ensurethattheprocessisrestartedinadenedor
controlled manner.
▶Thedevicemaybeoperatedonlywheninperfectcondition
andinconsiderationoftheoperatinginstructions.
▶Thegeneralrulesoftechnologyapplytoapplicationplanning
andoperationofthedevice.
The angle seat valve Type 2000 INOX was developed with
dueconsiderationgiventotheacceptedsafetyrulesand
is state-of-the-art. Nevertheless, dangerous situations
may occur.
4 GENERAL INFORMATION
4.1 Contact address
Germany
Bürkert Fluid Control Systems
Sales Center
Christian-Bürkert-Str. 13-17
D-74653Ingelngen
Germany
Tel. + 49 (0) 7940 - 10 91 111
Fax + 49 (0) 7940 - 10 91 448
Email:[email protected]
International
Contactaddressescanbefoundonthenalpagesoftheprinted
operating instructions.
And also on the Internet at: www.burkert.com
4.2 Warranty
Thewarrantyisonlyvalidifthedeviceisusedasintendedin
accordancewiththespeciedapplicationconditions.
4.3 Information on the Internet
TheoperatinginstructionsanddatasheetsforType2000INOXcan
befoundontheInternetat:www.burkert.com
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Product description
5 PRODUCT DESCRIPTION
5.1 General description
The2/2-wayangleseatvalveType2000INOXissuitableforliquid
and gaseous media.
Itusesneutralgasesorair(controlmedia)tocontroltheow-rateof
water,alcohol,oil,fuel,hydraulicuid,salinesolution,lye,organic
solventandsteam(owmedia).
5.2 Properties
•High leak-tightness.
•Highowvalues.
•Control air connection can be rotated centrally and steplessly
through 360°.
•Optical position indicator
•Maintenance-free
5.2.1 Restrictions
Whenowinletoverseat,theangleseatvalvemustnotbeused
forliquidmediaduetotheriskofwaterhammer!
6 TECHNICAL DATA
6.1 Conformity
Theangleseatvalve,Type2000INOX,conformstotheEUDirec-
tivesaccordingtotheEUDeclarationofConformity
6.2 Standards
Theappliedstandards,whichareusedtodemonstratecompliance
withtheEUDirectives,arelistedintheEUtypetestcerticateand/
ortheEUDeclarationofConformity.
6.3 Operating conditions
6.3.1 Permitted temperatures
Ambient temperature: 0 °C ... +60 °C
Medium temperature: 0 °C ... +180 °C
The angle seat valve is autoclavable.
Forthispurpose,thecontrolairconnectionmustbe
removed.
Thecombinationofmaximummediumtemperatureandmaximum
ambient temperature is indicated on the graph in "Fig.1":
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Type 2000 INOX

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Technical data
180 190
100
90
80
70
60
50
40
140 150 160 170
Medium temperature [°C]
Ambient temperature [°C]
Fig. 1: Combination of medium temperature / ambient
temperature
6.3.2 Pressure ranges
WARNING!
Discharge of medium and danger of bursting.
Ifthepermittedmediumorcontrolpressureisexceeded,lines
or device may leak and burst.
ForcontrolfunctionBatoolowcontrolpressuremayresultin
leaks.
▶Do not exceed medium pressure and control pressure.
▶ForcontrolfunctionBobservetheminimumcontrolpressure
of4bar.
Theproduct-specicpressurespecicationsareindicatedonthe
rating plate.
MinimumcontrolpressureforcontrolfunctionB:4bar
6.3.3 Media
WARNING!
Risk of injury from bursting lines caused by water hammer!
Ifthevalveisusedforliquidmediawhenowinletoverseat,
water hammer may cause lines and device to burst.
▶Donotusevalveswithowinletoverseatforliquidmedia!
Controlmedium: neutralgases,air
Flowmedia:   water,alcohols,oils,fuels,hydraulicuids,
salinesolutions,lyes,organicsolvents,
steam,air,neutralgases
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Technical data
6.4 General technical data
6.4.1 Inscription on the rating plate
Flow 1 2
2000 A 10,0 PTFE VA
Made in Germany
00182076 W1X LU
G3/8 Pmed 16 bar
Pilot 5,5 - 10 bar
Directionofow
(1and2=identicationofthe
connections on the valve housing)
Type,operatingprinciple,
orice,sealmaterial,housing
material
Identicationnumber
Manufacturercode
Permitted control pressure range
Connectiontype,
permitted max. medium pressure
Example:
Fig. 2: Example of rating plate
6.4.2 Materials
Valve housing stainless steel 316L
Actuator stainless steel 1.4404
Sealing elements FKM
Spindlesealing   PTFE-Vringswithspringcompensation
(with silicone grease)
Seatseal     PTFE
Spindle stainless steel 1.4401/1.4404
6.4.3 Connections
Control air connection 45° hose plug-in connection 4/2 M5
(recommendation) order no. 903383
Medium connection G3/8 and NPT3/8 socket connection
G1/2 external thread
Welded spigots according to
ENISO1127/ISO4200,DIN11850
Series2,ASMEBPE.Otherconnections
on request
6.4.4 Installation position
Anyposition,preferablywiththeactuatorfaceup.
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Structure and function
7 STRUCTURE AND FUNCTION
7.1 Structure
Theangleseatvalveconsistsofapneumaticallyactuatedpiston
actuator with optical position indicator and a 2/2-way valve housing.
7.2 Function
Dependingontheversion,thevalveisclosedagainstthemedium
owbyspringforce(controlfunctionA,CFA)orbycontrolpressure
(controlfunctionB,CFB).
Springforce(CFA)orpneumaticcontrolpressure(CFB)generates
theclosingforceonthependulumdisc.Theforceistransferredvia
a spindle which is connected to the actuator piston.
Flow inlet under seat:
Asthemediumpressureisunderthependulumdisc,thispressure
contributestotheopeningofthevalve.Theowinletisunderthe
valve seat.
IftheminimumcontrolpressureistoolowforCFBortheper-
mittedmediumpressureisexceeded,leaksmayoccur!
7.2.1 Control functions
Control function A (CFA)
Closedinrestpositionbyspringforce.
Control function B (CFB)
Openinrestpositionbyspringforce.
8 ASSEMBLY
8.1 Safety instructions
DANGER!
Risk of injury from high pressure in the system!
▶Turnothepressureandventthelinesbeforeloosening
lines or valves.
WARNING!
Risk of injury from improper assembly!
▶Installation must only be carried out by authorized techni-
ciansandwiththeappropriatetools!
Risk of injury from unintentional activation of the system and
uncontrolled restart!
▶Securesystemfromunintentionalactivation.
▶Followingassembly,ensureacontrolledrestart.
Risk of crushing from moving pneumatic connection!
▶Whenopeningandclosingthedevice,donottouchthe
moving pneumatic connection.
▶Do not reach into the area immediately above and below the
control air connection.
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Assembly
8.2 Before installation
•Theangleseatvalvecanbeinstalledinanyposition,preferably
withtheactuatorfaceup.
•Beforeconnectingthevalve,ensurethepipelinesareush
(stress-free).
•Observedirectionofow!
See "Fig.3".
Identication
oftheconnectionson
the valve housing
Directionofowspeciedon
the rating plate
Flow 1 2
2000 A 10,0 PTFE VA
Made in Germany
00182076 W1X LU
G3/8 P
med 16 bar
Pilot 5,5 - 10 bar
Example:
Fig. 3: Identication of the connections / direction of ow
8.2.1 Preparatory tasks
→Cleanpipelines(sealingmaterial,swarf,etc.).
Welded housing:
→Beforeweldinginthevalvehousing,removetheactuator
(see Chapter "8.3.1").
8.3 Installation
8.3.1 Remove actuator from the valve
housing (for welded housings only)
WARNING!
Risk of injury from damaged devices!
Ifthewrongtoolsareusedforassemblywork,thedevicemay
be damaged.
▶Toremovetheactuatorfromthevalvehousing,useanopen-
endwrench,neverapipewrench.
Control function A:
→Pressurize control air connection with compressed air (5.5 bar)
sothatthependulumdiscisliftedothevalveseatandisnot
damaged.
Control function B:
ForcontrolfunctionBitisnotnecessarytoapplycompressedair
forinstallation.
NOTE!
Damage to the seat seal or the seat contour!
▶Whenremovingtheactuator,ensurethatthevalveisinthe
open position.
→Whenvalveisinopenposition,removeactuatorfromthevalve
housing using an open-end wrench (see "Fig.4").
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Assembly
Optical position indicator
Yellow = valve open
Actuator
Wrenchatforopen-endwrench
(hexagonal)
Valve housing
Fig. 4: Removing the actuator
8.3.2 Installing valve housing in pipeline
For welded housings:
→Weld valve housing in pipeline system.
→Checkgraphitesealand,ifrequired,replace.
Graphite seal
Fig. 5: Graphite seal
For other housing models:
→Connect valve housing to pipeline.
8.3.3 Installing actuator on valve housing
DANGER!
Risk of explosion if incorrect lubricants used!
Unsuitable lubricant may contaminate the medium. In oxygen
applicationsthereisariskofexplosion.
▶Inspecicapplications,e.g.oxygenoranalysisapplications,
use appropriately authorized lubricants only.
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Assembly
WARNING!
Risk of injury from damaged devices!
Ifthewrongtoolsareusedforassemblywork,thedevicemay
bedamaged.Alsoiftighteningtorqueisincorrect.
▶Toremovetheactuatorfromthevalvehousing,useanopen-
endwrench,neverapipewrench.
▶Observe tightening torque (40 ± 3 Nm)
→Greasepipethreadbeforere-installingtheactuator
(e.g.withKlüberpasteUH196-402fromKlüber).
→For control function A: Pressurize control air connection with
compressedair(5.5bar)sothatthependulumdiscisliftedo
the valve seat and is not damaged when screwed in.
→Screw actuator into the valve housing.
Observetighteningtorque(40±3Nm)!
Ifthepositionofthecontrolairconnectionforinstal-
lationofthehoseisunfavorable,itcanbealignedstep-
lessly by rotating the actuator through 360°.
8.4 Pneumatic connection
DANGER!
Risk of injury from high pressure in the system!
▶Beforedisconnectinglinesandvalves,turnothepressure
and vent the lines.
WARNING!
Risk of injury from unsuitable connection hoses!
Hoses which cannot withstand the pressure and temperature
range may result in hazardous situations.
▶Useonlyhoseswhichareauthorizedfortheindicatedpres-
sure and temperature range.
▶Observethedatasheetspecicationsfromthehose
manufacturers.
8.4.1 Control air connections
Order no.
903383
The45°angleconnection,whichcanbeordered
separately,isrecommendedforthecontrolair
connection!
Inthiscasethefree-movinghoselengthshould
be min. 250 mm.
Ifthehoselengthisshorter,thedurabilityand
functionoftheplug-incouplingwillbeimpaired!
Ifastraightcontrolairconnectionisused,the
free-movinghoselengthshouldbemin.400mm.
Ifthehoselengthisshorter,thedurabilityand
functionoftheplug-incouplingwillbeimpaired!
Risk of crushing!
▶Duetotheriskofcrushing,a90°controlair
connectionmustnotbeused!
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Type 2000 INOX

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Start-up
9 START-UP
9.1 Safety instructions
WARNING!
Risk of injury from improper operation!
Improper operation may result in injuries as well as damage to
the device and the area around it.
▶Beforestart-up,ensurethattheoperatingpersonnelare
familiarwithandcompletelyunderstandthecontentsofthe
operating instructions.
▶Observethesafetyinstructionsandintendeduse.
▶Only adequately trained personnel may start up the equip-
ment/the device.
10 MAINTENANCE, CLEANING
10.1 Safety instructions
DANGER!
Risk of injury from high pressure in the system!
▶Turnothepressureandventthelinesbeforeloosening
lines or valves.
WARNING!
Risk of injury from improper maintenance!
▶Maintenance may only be carried out by authorized techni-
ciansandwiththeappropriatetools!
Risk of injury from unintentional activation of the system and
uncontrolled restart!
▶Securesystemfromunintentionalactivation.
▶Followingmaintenance,ensureacontrolledrestart.
▶Toscrewinorunscrewthevalvehousingoractuator,use
anopen-endwrench,neverapipewrench,andobserve
tightening torques.
10.2 Maintenance work
10.2.1 Actuator
Theactuatoroftheangleseatvalveismaintenance-free.
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Repairs
10.2.2 Angle seat valve
Parts which are subject to natural wear:
•Pendulum disc
•Graphite seal
Ifleaksoccur,replacetheparticularwearingpartwithanappro-
priate spare part (see Chapter "13Spareparts").
10.3 Cleaning
Commercially available cleaning agents can be used to clean the
surfaceofthedevice.
NOTE!
Avoid causing damage with cleaning agents.
▶Beforecleaning,checkthatthecleaningagentsarecompat-
ible with the housing materials and seals.
10.4 Recommended auxiliary materials
Inthismanualthefollowingauxiliarymaterialsarerecommended
forfaultlessoperation,maintenanceandrepairofthedevice:
Type of aux-
iliary material
Product
designation
Manufacturer and Internet
address
Lubrication
paste
Klüber paste
UH1 96-402
KlüberLubricationMünchenKG,
www.klueber.de
Adhesive Loctite 640 MarketingLoctite,HenkelAG&
Co.KGaA,
www.loctite.de
11 REPAIRS
CAUTION!
Risk of injury and/or damage by the use of incorrect parts!
Incorrect accessories and unsuitable spare parts may cause
injuries and damage the device and the surrounding area.
▶UseoriginalaccessoriesandoriginalsparepartsfromBürk-
ert only.
11.1 Replacing the valve set
Thevalvesetconsistsof:
•The pendulum disc:
consistingof -Sealholder
- Seat seal
- Centering
•The graphite seal
This can also be ordered separately
Beforethevalvesetcanbereplaced,theactuatormust
beremovedfromthevalvehousingasdescribedbelow.
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Type 2000 INOX

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Repairs
11.1.1 Removing the actuator from the valve
housing
DANGER!
Risk of injury from discharge of medium and release of
pressure!
It is dangerous to remove the device under pressure due to the
suddenreleaseofpressureordischargeofmedium.
▶Turnothepressureandventthelinesbeforeloosening
lines or valves.
WARNING!
Risk of injury from damaged devices!
An incorrect tool and an excessive tightening torque may
damage the device during installation.
▶Toremovetheactuatorfromthevalvehousing,usean
open-endwrench,neverapipewrench.
▶Observe tightening torque (40 ± 3 Nm)
Control function A:
→Pressurize control air connection with compressed air (5.5 bar)
sothatthependulumdiscisliftedothevalveseatandisnot
damaged.
Control function B:
ForcontrolfunctionBitisnotnecessarytoapplycompressedair
forremoval.
NOTE!
Damage to the seat seal or the seat contour!
▶Whenremovingtheactuator,ensurethatthevalveisinthe
open position.
→Whenvalveisinopenposition,removeactuatorfromthevalve
housing using an open-end wrench (WAF 22) (see "Fig.6").
Optical position indicator
Yellow = valve open
Actuator
Wrenchatforopen-endwrench
(hexagonal)
Valve housing
Fig. 6: Removing the actuator
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Type 2000 INOX

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Repairs
11.1.2 Replacing valve set
Pendulum disc
Seal holder
Seat seal
Centering
Graphite seal
Spindle
Wrenchat
Fig. 7: Valve set
WARNING!
Risk of injury from damaged devices!
Ifthewrongtoolsareusedforassemblywork,thedevicemay
be damaged.
▶Toremovetheactuatorfromthevalvehousing,useanopen-
endwrench,neverapipewrench.
Ifthetighteningtorqueistoogreat,thespindlethreadmaybe
damaged.
Procedure:
→Counterspindleonthewrenchatusingopen-endwrench
(WAF 7).
→Carefullyloosencenteringusingasuitableopen-endwrench
(WAF 5.5) to prevent damaging the spindle thread.
→Unscrew centering.
→Remove seal holder together with seat seal.
→Attach new seal holder and new seat seal to the spindle.
→Apply adhesive (Loctite 640) to spindle thread.
→Screw on centering and tighten using a suitable open-end
wrench (WAF 5.5).
Observetighteningtorque(0,6Nm)!
→
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Repairs
11.1.3 Installing actuator on valve housing
WARNING!
Risk of injury from unintentional activation of the system and
uncontrolled restart!
▶Securesystemfromunintentionalactivation.
▶Followingassembly,ensureacontrolledrestart.
DANGER!
Risk of explosion if incorrect lubricants used!
Unsuitable lubricant may contaminate the medium. In oxygen
applicationsthereisariskofexplosion.
▶Inspecicapplications,e.g.oxygenoranalysisapplications,
use appropriately authorized lubricants only.
→Greasepipethreadbeforere-installingtheactuator
(e.g.withKlüberpasteUH196-402fromKlüber).
→Checkgraphitesealand,ifrequired,replace.
Graphite seal
Fig. 8: Graphite seal
→For control function A: Pressurize control air connection with
compressedair(5.5bar)sothatthependulumdiscisliftedo
the valve seat and is not damaged when screwed in.
WARNING!
Risk of injury from damaged devices!
Ifthewrongtoolsareusedforassemblywork,thedevicemay
be damaged.
▶Toremovetheactuatorfromthevalvehousing,useanopen-
endwrench,neverapipewrench.
Ifthetighteningtorqueistoogreat,thespindlethreadmaybe
damaged.
▶Observe tightening torque (40 ± 3 Nm)
→Screw actuator into the valve housing.
Observetighteningtorque(40±3Nm)!
Ifthepositionofthecontrolairconnectionforinstal-
lationofthehoseisunfavorable,itcanbealignedstep-
lessly by rotating the actuator through 360°.
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Type 2000 INOX

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Malfunctions
12 MALFUNCTIONS
Malfunction Remedial action
Actuator
does not
switch.
Control pressure too low.
→Seepressurespecicationsontherating
plate.
Medium pressure too high.
→Seepressurespecicationsontherating
plate.
Directionofowreversed.
→Seeidenticationontheratingplate.
Valve is not
sealed.
Dirt between seal and valve seat.
→Install dirt trap.
Seat seal worn.
→Install new pendulum disc.
Seatsealdamaged,e.g.byforeignobjects,
swarforsimilar.
→Install new pendulum disc.
Directionofowreversed.
→Seeidenticationontheratingplate.
Control pressure too low.
→Seepressurespecicationsontherating
plate.
Medium pressure too high.
→Seepressurespecicationsontherating
plate.
Malfunction Remedial action
Valve is
leaking on
the release
bore.
Spindle seal worn.
→Replacing actuator.
Tab. 1: Malfunctions
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Type 2000 INOX

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Spare parts
13 SPARE PARTS
CAUTION!
Risk of injury and/or damage by the use of incorrect parts!
Incorrect accessories and unsuitable spare parts may cause
injuries and damage the device and the surrounding area.
▶UseoriginalaccessoriesandoriginalsparepartsfromBürk-
ert only.
Thevalveset,orderno.220053,isavailableasasparepartfor
theangleseatvalve,Type2000INOX.Thisconsistsof:
•The pendulum disc:
consistingof -Sealholder
- Seat seal
- Centering
•The graphite seal
This can also be ordered separately
Graphite seal
Seal holder
Seat seal
Centering
Fig. 9: Valve set
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Type 2000 INOX