Advantages Reliable sealing against high pressures and low torques due to the double offset design Low-wear switching characteristics Secure stem sealing (Option: TA-Luft) Variable seat ring materials GEFA-MULTITOP Efficient automation with variable interface without interruption of the stem Pivoting angle limitation and optical position indicator at the stem prevents wrong position of the stem during servicing VDI 2440 EPDM CRYO-AUSFÜHRUNG -196°C BUTTERFLY VALVES HIGH PERFORMANCE BUTTERFLY VALVE Butterfly valve double offset design | type HG
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AdvantagesReliablesealingagainsthighpressuresandlowtorquesduetothedouble offsetdesign
Low-wearswitchingcharacteristics
Securestemsealing(Option:TA-Luft)
Variableseatringmaterials
GEFA-MULTITOPEfficientautomationwithvariableinterfacewithoutinterruptionofthestem
Pivotinganglelimitationandopticalpositionindicatoratthestempreventswrongpositionofthestemduringservicing
VDI 2440EPDM
CRYO-AUSFÜHRUNG-196°C
BUTTERFLY VALVES
HIGH PERFORMANCE BUTTERFLY VALVEButterflyvalvedoubleoffsetdesign|typeHG
1 Automation · StandardmountingflangeaccordingtoENISO5211· Directactuatormountingwithoutinterruptionofthestem· Variableandexchangeableforanyactuatorsize· Actuatorprotectionagainstleakage
2 Safety (option: TA-Luft) Stemsealingcanbere-tensionedbeneaththemountingflange; thus,itcanbereadjustedwithoutdismountingtheactuator.
3 Long service life Theinsertringofthebodyefficientlyprotectstheseatringfromthe directmediumflowandpreventswearsuchaserosionandabrasion.
4 Reliability Thedoubleoffsetdesignwithsphericalsealingsurfaceatthediscallowsswitchingwithminimumwearandoffersthehighestleveloftightnessandlowtorquesatthesametime.
5 Exact and variable Face-to-facedimension:EN558line20/25/16Option:Designwithgroove/springEN1092,formD
6 Precise mounting Easymountingduetocentringaidsforallstandardflanges.
7 Service-friendly Theaxialcentringofthestemcanbereachedeasilyandisprepared forlaterservice.
8 Efficient and safe Thecylindricalscrewsfixthemountingflangewithouttransferring torques(drivingtorques).
9Theclampingsleevesguaranteeaclearance-freeconnectionbetween themountingflangeandthebodyandtransferthedrivingtorques.
Efficientandsafeautomationwiththe interchangeableflangeGEFA-MULTITOP
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9
Subject to technical modifications
TECHNICAL FEATURESButterflyvalvedoubleoffsetdesign|typeHG
Type HG 1 DN50–DN600
Doubleoffsetvalveaswafertypebutterflyvalveforhighpressureandtemperatureloads
Wafer style
Technical DataForinstallationbetweenflangesEN1092, PN10/16/25/40,PS25 ASMECl150/300,PS25Temperature range-50°Cto+450°CVacuum:upto1mbar(abs)Face-to-face dimensionDINEN558line20Optional:line25andline16API609table1Mounting flangeDINENISO5211TestDINEN12266P10P11P12F20MarkingDINEN19,AD2000
Type HG 7 DN50–DN600
Doubleoffsetvalvewithlugsforhighpressureandtemperatureloads
Can be removed from theflange on one side
Technical DataForinstallationbetweenflangesEN1092, PN10/16/25/40,PS25 ASMECl150/300,PS25Temperature range-50°Cto+450°CVacuum:upto1mbar(abs)Face-to-face dimensionDINEN558line20Optional:line25andline16API609table1Mounting flangeDINENISO5211TestDINEN12266P10P11P12F20MarkingDINEN19,AD2000
Type HG 7 ...BK DN50–DN600
Doubleoffsetvalvewithlugsforhighpressureandtemperatureloads
Can be removed from theflange on both sides
Technical DataForinstallationbetweenflangesEN1092, PN10/16/25/40,PS25 ASMECl150/300,PS25Temperature range-50°Cto+450°CVacuum:upto1mbar(abs)Face-to-face dimensionDINEN558line20Optional:line25andline16API609table1Mounting flangeDINENISO5211TestDINEN12266P10P11P12F20MarkingDINEN19,AD2000
Type HGF DN50–DN600FireSafe version
Doubleoffsetvalvefor theuseintheFireSafe areaaccordingto DINENISO10497,API607undBS6755Part2
Wafer or lug style
Technical DataForinstallationbetweenflangesEN1092,PN10/16/25/40,PS25ASMECl150/300,PS25Temperature range -50°Cto+450°CFace-to-face dimensionDINEN558line20Optional:line25andline16API609table1Mounting flangeDINENISO5211TestDINEN12266P10P11P12F20MarkingDINEN19,AD2000
THE TYPESButterflyvalvedoubleoffsetdesign|typeHG
BUTTERFLY VALVES
Type HGC DN50–DN600Cryo version
Doubleoffsetvalvefortheusedownto-200°Cwithcryogenicstemextension aspressurechamber
Wafer or lug style
Technical DataForinstallationbetweenflangesEN1092,PN10/16/25/40,PS10ASMECl150/300,PS25Temperature range -200°Cto+200°CFace-to-face dimensionDINEN558line20Optional:line25andline16API609table1Mounting flangeDINENISO5211TestDINEN12266P10P11P12F20MarkingDINEN19,AD2000
Type HGH DN50–DN600Valve with heating jacket
Doubleoffsetvalvewith heatingjacketwithtwochambersconnections:flange,weldingsocket,threadedsocket
Technical DataForinstallationbetweenflangesEN1092,PN10/16/25/40,PS25ASMECl150/300,PS25Temperature range -50°Cto+450°CFace-to-face dimensionDINEN558line20Optional:line25andline16API609table1Mounting flangeDINENISO5211TestDINEN12266P10P11P12F20MarkingDINEN19,AD2000
Type HGHL DN50–DN600Welded valve
Doubleoffsetvalvewithdoubleshellforheatingwithoutinterruptionofthepipelineheating.
Technical DataForinstallationbetweenflangesEN1092,PN10/16/25/40,PS25ASMECl150/300,PS25Temperature range-50°Cto+450°CFace-to-face dimensionaccordingtocustomerspecificationsMounting flangeDINENISO5211TestDINEN12266P10P11P12F20MarkingDINEN19,AD2000
Type HG1 /7 L DN50–DN600Food
DoubleoffsetvalvefortheuseinthefoodindustryaccordingtotheregulationEC1935/2004
Technical DataForinstallationbetweenflangesEN1092,PN10/16/25/40,PS25ASMECl150/300,PS25Temperature range-20°Cto+200°CVacuum:upto1mbar(abs)Face-to-face dimensionDINEN558line20Optional:line25andline16API609table1Mounting flangeDINENISO5211TestDINEN12266P10P11P12F20MarkingDINEN19,AD2000VO(EG)1935/2004
Subject to technical modifications
Theseatringsystem
Highly flexible with optimisedrestoring forceIfitisinstalledintherecommendedflowdirection,thedifferentialpressureeffi-cientlysupportsthebubble-tightsealing
Options· Lowtemperatureseatring· Seatringmadeofhighperformanceplasticsforextremecasesofapplication
R-PTFE seat ring Highlyflexibledesign–chemicallyalmostunlimitedresistant.Pressure-resistantduetoglassfibrereinforce-mentevenathightemperatures. TightnessEN12266,leakagerateA.
Metal seat ringExcellentspringcharacteristicsduetothespecialform.Hightemperature-resistantduetotheseatringconstruction of:1.4571nitrated,tightnessupto+450°C,EN12266,leakagerateB.
Firesafe seat ringDoubleseatPTFE/1.4571certifiedaccordingtoENISO10497:2010-06API607,6thedition.
Thedoubleoffsetdesignallowsareliable,almostwear-freeshut-off. Duetothedoubledisplacementofthepivot,thevalvediscisliftedfromtheseatatthebeginningoftheopeningmovement.Theseatisthenfreefromheavypressureoverthewholecircumference.
The 90 ° turning is frictionless ateven reduced torques.
Thesedesigncharacteristicsallowanextremelylongfunctionallife–even athighswitchingfrequencies.Therecommendedpressuredirection(arrowmarkatthebody)ensurescompletetightness.
Theactivepressure(differentialpressure)ofthemediumadditionallysupportsthesealingfunctionviathepressingeffectoftheseatringagainstthesealingsurfaceofthedisc.Theinsertringandthebodyadditionallyprotecttheflexibleseatringefficientlyagainstnegativeflowinfluences.
Thedoubleoffsetdesign
DETAILED SOLUTIONSButterflyvalvedoubleoffsetdesign|typeHG
BUTTERFLY VALVES
Position Designation Material
≤ DN 300≥ DN 350
HG 4466 TGHG 4444 TG
HG 6666 TG HG 4435 MHG 4444 M
HG 6635 MHG 4435 HMHG 4444 HM
HG 6635 HM HGF 4466 TM HGF 6666 TM
max. operating temp. +220°C +220°C +220°C +220°C +450°C +450°C +200°C +200°C
1 Body 1.0619 1.4408 1.0619 1.4408 1.0619 1.4408 1.0619 1.4408
2 Valvedisc≤DN300≥DN350
1.44081.0619/nickel-plated
1.44081.4408
1.4408/ nitrated1.0619/ nickel-plated
1.4408/ nitrated1.4408/ nitrated
1.4408/ nitrated1.0619/ nickel-plated
1.4408/ nitrated1.4408/ nitrated
1.4408/ nitrated1.0619/ nickel-plated
1.44081.4408
3 Welle 1.4571 1.4571 1.4571 1.4571 1.4571 1.4571 1.4571 1.4571
4* Seatring PTFE/Glas PTFE/Glas 1.4571/nitrated/ Graphite**
1.4571/nitrated/ Graphite**
1.4571/nitrated/ Graphite**
1.4571/nitrated/ Graphite**
PTFE/1.4571/nitrated+ Graphite
PTFE/1.4571/nitrated+ Graphite
5 Bearingbush 1.4401/PTFE 1.4401/PTFE 1.4401/PTFE 1.4401/PTFE 1.4571/nitrated 1.4571/nitrated 1.4571/nitrated 1.4571/nitrated
6* Package PTFE PTFE PTFE PTFE Graphite Graphite Graphite Graphite
7 Insertring C-steel 1.4571 C-steel 1.4571 C-steel 1.4571 1.4571 1.4571
Pressureandtemperaturerangediagram
Dif
fere
ntia
l pre
ssur
e ba
r
0-40 50 100 150 200 250 300 350 400 4500
5
10
15
20
25
30
35
500
Body
40
45
50
55
POM seat
PEEK seat
Saturated steam
DN 50 - DN 300
PTFE seat PTFE/glass seat
PTFE/carbon seat
Metal seat
PN 25
PTFE seat
0
5
10
15
20
25
POM seatPTFE/glass seat
DN 600
Dif
fere
ntia
l pre
ssur
e ba
r
0-40 50 100 150 200 250 300 350 400 450 500
PTFE/carbon seat
Metal seat
Body
Saturated steam
Temperature °C
PN 10
Metal seat
PTFE/glass seat
40
35
30
25
20
15
10
5
0
POM seat
PTFE/carbon seat
Body Saturated steam
DN 350 - DN 500
Dif
fere
ntia
l pre
ssur
e ba
r
0-40 50 100 150 200 250 300 350 400 450 500
PTFE seat
PN 16
Temperature °C
Temperature °C
Druck/Temperatur-Diagramm
Dif
fere
ntia
l pre
ssur
e ba
r
0-40 50 100 150 200 250 300 350 400 4500
5
10
15
20
25
30
35
500
Body
40
45
50
55
POM seat
PEEK seat
Saturated steam
DN 50 - DN 300
PTFE seat PTFE/glass seat
PTFE/carbon seat
Metal seat
PN 25
PTFE seat
0
5
10
15
20
25
POM seatPTFE/glass seat
DN 600
Dif
fere
ntia
l pre
ssur
e ba
r
0-40 50 100 150 200 250 300 350 400 450 500
PTFE/carbon seat
Metal seat
Body
Saturated steam
Temperature °C
PN 10
Metal seat
PTFE/glass seat
40
35
30
25
20
15
10
5
0
POM seat
PTFE/carbon seat
Body Saturated steam
DN 350 - DN 500D
iffe
rent
ial p
ress
ure
bar
0-40 50 100 150 200 250 300 350 400 450 500
PTFE seat
PN 16
Temperature °C
Temperature °C
Druck/Temperatur-Diagramm
Dif
fere
ntia
l pre
ssur
e ba
r
0-40 50 100 150 200 250 300 350 400 4500
5
10
15
20
25
30
35
500
Body
40
45
50
55
POM seat
PEEK seat
Saturated steam
DN 50 - DN 300
PTFE seat PTFE/glass seat
PTFE/carbon seat
Metal seat
PN 25
PTFE seat
0
5
10
15
20
25
POM seatPTFE/glass seat
DN 600
Dif
fere
ntia
l pre
ssur
e ba
r
0-40 50 100 150 200 250 300 350 400 450 500
PTFE/carbon seat
Metal seat
Body
Saturated steam
Temperature °C
PN 10
Metal seat
PTFE/glass seat
40
35
30
25
20
15
10
5
0
POM seat
PTFE/carbon seat
Body Saturated steam
DN 350 - DN 500
Dif
fere
ntia
l pre
ssur
e ba
r
0-40 50 100 150 200 250 300 350 400 450 500
PTFE seat
PN 16
Temperature °C
Temperature °C
Druck/Temperatur-Diagramm
Availablematerials
Control range20°–60°openingangle
Vacuum-tightupto1mbar(a)
Flange surfacesaccordingtoDINEN1092-1formB1
Thepressureandtemperaturerangediagramshowstheapplicationlimitsofthedifferentseatringmaterials. Theselimitsapplytotheintendeduse.Processvariables andcharacteristicsofthemediumcaninfluencethevaluesofthediagram.Temperaturesbelow-50°Cuponrequest.
Nominal size Nominal pressuremax. operating pessure
DN50–DN300PN10/16/25/40ANSI150/300
25bar
DN350–DN500PN10/16/25ANSI150
16bar
DN600–DN1000PN10/16ANSI150
10bar
Themaximumoperatingpressuredependsontheoperatingtemperature.
*Sparepart/wearpart,**Option:1.4571/nitrated/PTFE
Subject to technical modifications
TECHNICAL DATAButterflyvalvedoubleoffsetdesign|typeHG
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