Triple-eccentric Butterfly Valves By SAMSON LEUSCH
Triple-eccentric Butterfly Valvesby SAMSON LEUSCH
LEUSCH SINCE 1974Contents2LEUSCH since 19743Special Butterfly Valves14Prime Quality4Butterfly Valves for Cryogenic Applications16Type LTR 43 Butterfly Valve6Special Butterfly Valves20Triple-eccentric Design of Type LTR 438Ball Valves (Trunnion Design)24Different Seat Designs of Type LTR 4310Special Ball Valves26Special Applications of Type LTR 4311Actuators28Special ESD Application of Type LTR 4312Everything from a Single Source30
SAMSON LEUSCH: innovation, development, design, machining and manufacture of first-rate triple-eccentric controland shut-off butterfly valvesAt the company headquarters in Neuss, Germany, LEUSCHproduces standard valves for industrial applications as well asversions tailored to specific customer specifications. SAMSONLEUSCH stands for German engineering and customizedmanufacturing of control and shut-off butterfly valves to meetspecific customer requirements. Our valves fulfill highestexpectations.The triple-eccentric Type LTR 43 Control and Shut-off ButterflyValve is the key product in our portfolio. Additionally, the productrange includes special valves, also versions fitted with integratedhandwheel gearing as well as pneumatic, hydraulic or electricactuators.LEUSCH was founded in 1974 and joined forces withSAMSON in 2003. SAMSON AKTIENGESELLSCHAFTheadquartered in Frankfurt am Main, Germany is a worldwideleader in the manufacture of expertly engineered control valves.With subsidiaries in over 80 countries, SAMSON is representedall across the world to assist customers on all continents. LEUSCHcustomers also benefit from this network as it guaranteesworldwide sales and after-sales service for our products as well.SAMSON LEUSCH butterfly valves are used in all majorindustrial applications, such as oil and gas, refineries, thechemical industry, seawater desalination, pulp and paper, gasextraction and transport, power plant construction, ship buildingas well as onshore and offshore technology.3
PRIME QUALITYThe prime quality that the SAMSON LEUSCH products areknown for is based on the commitment and hard work of ourhighly skilled staff: they do their best to get better every day. Ourstaff make sure that our butterfly valves are sized, configured,designed and manufactured to perfectly meet the specificcustomer requirements.SAMSON LEUSCH butterfly valves feature high flowcapacities and an excellent control accuracy.Quality is our tradition. To meet the high quality requirementsplaced on our products, our construction and productionare based on the ISO 9001:2015, HP 0/TRD 201 qualitymanagement systems as well as on international standards, suchas the European Pressure Equipment Directive 2014/68/EU.All valves leaving our works have been subjected to a 100 %leak, function and quality testing procedure. Thanks to productionplanning and scheduling, customers know the manufacturingand testing status of their valves at any time.4The special design characteristics, the use of high-qualitymaterials and their specific machining make our highperformance valves suitable for extreme operating conditions,such as high and low temperatures, high pressures and otherchallenging applications.As standard, our valves comply with strictest requirementsconcerning fire safety and fugitive emissions (TA Luft, ISO 15848)and they shut off tightly in both directions of flow.As a modern manufacturer, SAMSON LEUSCH stands forsustainability and continuity. We use our commitment andtechnical expertise to achieve the highest level of safety,reliability and durability with our control and shut-off butterflyvalves. Every control valve that we make is the result of decadelong experience, continuous development and compliance withthe strictest standards.
SAMSON‘s LEUSCH product line includes: Control and shut-off butterfly valvesNPS 3 to 96 (DN 80 to 2400)Class 150 to 2500 (PN 10 to 420) BallvalvesNPS ½ to 60 (DN 15 to 1500)Class 150 to 2500 (PN 10 to 420) Three-wayor four-way valvesNPS ½ to 36 (DN 15 to 900)Class 150 to 2500 (PN 10 to 420) SpecialconstructionsAccording to customer requirements Actuatorsand accessoriesOn request, all valves are available with soft or metal seat,with low-noise trims, and made of special materials.Flanges,NPS 4Welding ends,NPS 645
TYPE LTR 43 BUTTERFLY VALVETriple-eccentric control and shut-off butterfly valve ValvesizeNPS 3 to 100 (DN 80 to 2400) Pressure rating Class 150 to 2500 (PN 6 to 420)Wafer, lug, double flanged, or welding endsMetal or soft seatedLeakage class VI acc. to ANSI FCI 70-2/IEC 60534-4(EN 12266-1 Class A)Seat of laminated 1.4404/graphiteor 316L/graphite, or special materialsDesigned acc. to EN 12516, ANSI B16.34,and API 609Materials: C steel, stainless steel ,titanium, Hastelloy ,Inconel , Monel , duplex steel, SMO, bronze,zirconium, etc.6 Options:–– Low-emissions packing acc. to TA Luft/ISO 15848–– Low-noise and anti-cavitation trims–– Heating jacket–– Anti-surge design–– ESD version–– Outer bearings, inner packing–– Cryogenic and high-temperature versions–– Fire-safe design acc. to API 607/ISO 10497–– Quick-closing version ( 0.5 s)–– NACE version acc. to MR0103/MR0175/ISO 15156
��–––––––RefineriesLNG, cryogenicsPetrochemicalsSteel worksSolarCompressorsAmmonia, ureaChemicalsPower plantsSteam and gas turbines7
TRIPLE-ECCENTRIC DESIGN OF TYPE LTR 43Triple-eccentric design8
The conical triple-eccentric seat of the Type LTR 43 Controland Shut-off Butterfly Valve provides various benefits: At the slightest rotary motion, the seal is lifted off the bodyseat, which means that there is no transition from static todynamic friction between the seat and plug. The conical shape prevents the butterfly disk from gettingjammed. The control and shut-off butterfly valve can be used for bothdirections of flow:FTO flow-to-open (the medium opens the disk)FTC flow-to-close (the medium closes the disk) The seat‘s conical shape ensures maximum shut-off performance even at extreme temperature fluctuations andpressure peaks. The valves have an extraordinarily long service life sincethey open and close almost without friction and mechanicalinitial breakaway torque. Thanks to their patented disk profile (patent no. DE 10 2012102 4720 A1), the control and shut-off butterfly valves arealso suitable for use in supercritical processes.Triple-offset design principles:First offset: The shaft is positioned fully in front of thefacing of the disk and seat. The result is onecontinuous, uninterrupted facing. This allowsa high degree of tightness to be achieved asthere are no more transitions between diskand shaft in the sealing area.Second offset: The shaft is slightly offset from the centerlineof the body. This gives the butterfly valve aflow-to-close (FTC) and a flow-to-open (FTO)closing direction. If the butterfly valve is installed in the standard FTC direction, the process medium helps keep the valve shut.Third offset: The beveled conical seat geometry preventsfriction, and thus wear and tear, when thevalve is opened or closed. The initial breakaway torques are minimized. The largefacing allows strictest leakage requirementsto be met.9
DIFFERENT SEAT DESIGNS OF TYPE LTR 43Triple-eccentric design Standardseries 2The seat (labyrinth seal, 4), which is protected inside thebody, and the massive seat ring (3) can be replaced asthe retaining ring (5) is removable.Best solution for critical applications, such as control tomeet strict leakage requirements Optionalseries 4Only the seat ring (labyrinth seal, 3) can be replaced.The body seat comes with a Stellite armor for betterwear protectionMain application for manual, non-critical service Optional Optionalseries 3The massive seat ring (3) with optional Stellite facing usedin the standard version can be replaced. Additionally,the body seat comes with a Stellite armor for better wearprotectionPreferred use in welded-in versionsOptional series 210Optional series 3series 5The massive seat and retaining ring assembly (5) as wellas the massive seat ring (3) can be replaced.For very high flow velocities, abrasive media and highpressure dropsOptional series 4Optional series 5
SPECIAL APPLICATIONS OF TYPE LTR 43Triple-eccentric control butterfly valves TypeLTR 43 Control Butterfly Valve,NPS 24, Class 150 with low-noise andanti-cavitation trimsExchangeable partial attenuation platesAnti-surge trim designMetal seatedSeat and seat ring with Stellite facingWith double-acting DR 10000-A actuator andType 3730-5 Electropneumatic Positionerwith FOUNDATION fieldbus communication TypeLTR 43 Control Butterfly Valve,NPS 16, Class 300 with low-noise andanti-cavitation trimsWith downstream silencer includingperforated attenuation plates in the outletMetal seatedSeat and seat ring with Stellite facingWith single-acting actuator (air-to-open) andelectropneumatic positioner11
SPECIAL ESD APPLICATION OF TYPE LTR 43Triple-eccentric shut-off butterfly valvesFire protection/enclosure12
ESD(Emergency Shutdown) butterfly valveMetal seated, fire-safe certification according to API 607Pneumatic (double-acting or single-acting) actuator Options:––––––––––Fire resistance of actuator and accessories according to UL 1709Manual or automatic partial stroke test (PST)Switching cabinet for remote or on-site operationReservoir for emergency air supplyEmergency manual override13
SPECIAL BUTTERFLY VALVES14
Controlbutterfly valve, NPS 64, Class 300Type LTR 43, wafer styleMetal seatedWith single-acting actuator (air-to-close)and Series 3730 Electropneumatic Positioner Controlbutterfly valve, NPS 20, Class 1500Type LTR 43, with flanged endsMetal seatedWith single-acting actuator (air-to-open),manual hydraulic pump,and Series 3730 Electropneumatic Positioner15
BUTTERFLY VALVES FOR CRYOGENIC APPLICATIONS Top-entrybutterfly valveType LTR 43, with welding endsCan be serviced while installed in the pipelineCryogenic extension bonnet (–196 C)Metal seatedWith single-acting actuator (air-to-close)and Type 3730-3 Electropneumatic Positionerwith HART communication Shut-offbutterfly valve, NPS 16, Class 900Type LTR 43, with flanged endsCryogenic extension bonnet (–196 C)Metal seatedLeakage class VIWith single-acting actuator including damping systemLess than 0.5 s stroking time16
ButterflyvalveType LTR 43, with welding endscryogenic extension bonnet (insulating section)for cryogenic service (–196 C)including cold-box flange17
BUTTERFLY VALVES FOR CRYOGENIC APPLICATIONSCryogenic testing: test setup1234567818Insulated tank (filled with liquid nitrogen)Pressure-reducing valve on the helium tank with indicatorsFive-way valvePressure indicator at the valve inlet (digital and analog)Temperature indicators inside and on the valve bodyPressure indicator at the valve outlet (digital and analog)Leakage meterTemperature indicator for ambient temperature (as reference)
AIR LIQUIDE Deutschland GmbHIM-SCM-Bulk-TechnikAnsgar DechesneFI76PI34PI28TIFlow diagram FE-test / body pressure test / seat leak testTI5119
SPECIAL BUTTERFLY VALVES Shut-offbutterfly valve, NPS 20, Class 600Type LTR 43, with welding endsMetal seatedSeat with Stellite facingWith single-acting actuator (air-to-close) Shut-offbutterfly valve withheating jacketType LTR 43, wafer style or double-flanged versionMetal seated20
Anti-surgebutterfly valve, NPS 24, Class 300Type LTR 43, with flanged endsWith low-noise trim for start-up serviceWith outer bearings and inner packingWith single-acting actuator (air-to-open)and Series 3731 Electropneumatic Positioner (Ex d)21
SPECIAL BUTTERFLY VALVES Controlbutterfly valve, NPS 48, Class 150with low-noise trim and silencerThe patented low-noise components for Type LTR 43are effective, reliable and cost-effective solutions tominimize noise emissions, cavitation and erosion.The components can be adapted to the specificoperating conditions and retrofitted on existingbutterfly valves.With flanged endsMetal seatedWith double-acting actuator and reservoir foremergency air supply Shut-offbutterfly valve, NPS 54, Class 150Type LTR 43, with flanged endsMetal seatedLeakage class VIWith single-acting actuatorincluding damping systemLess than 1 s stroking time22
SPECIAL BUTTERFLY VALVESCentric control butterfly valves TheType LAS centric, step-seated butterfly valves and theType LDS swing-through butterfly valves are mainly used forcontrol applications. Thestep-seated LAS valves come with two additional stoprings welded into the body to minimize leakage by covering the annular clearance between the body and butterflydisk. Theycan also be used for three-way applications as alinked system.LASLDS23
BALL VALVES (TRUNNION DESIGN)On/off and control applications24
ValvesizeNPS 1 to 60 (DN 25 to 1500) Pressure ratingClass 150 to 2500 (PN 10 to 420)Flanged or welding endsTrunnion-mounted ballSide-entry or top-entry designLeakage class IV to VI acc. to ANSI FCI 70-2/IEC 60534-4Seat: PTFE, stainless-steel-filled PTFE, PEEK, nylon, or Stellite Materials: steel, stainless steel, titanium, Hastelloy , duplex steel, etc. issions packing acc. to TA LuftLow-noise and anti-cavitation trimsHeating jacketAnti-surge designESD versionCryogenic and high-temperature versions25
SPECIAL BALL VALVES Controlball valve, NPS 16 or 24, Class 300with low-noise (LN-TRIM) trim andNPS 16 or 24 diffuserType BVL 63-LN, with flanged endsSplit-body designMetal seated Ballvalve, DN 200 or 100, PN 16for high-temperature applicationsup to 800 CType BVL 63-HTTop-entry design26
ESDball valve, NPS 16, Class 300Top-entry designMetal seatedWith single-acting actuatorand Series 3730 Electropneumatic Positionerwith partial stroke testing (PST) function27
ACTUATORSDifferent actuator versions Single-actingpneumatic actuators with spring or double-acting actuatorsin standard, high-temperature, or low-temperature versionsRack-and-pinion actuators for smaller torquesScotch-yoke actuators for higher torques28
Hydraulicor electrohydraulic actuatorsFor high torques at low actuator weights ElectricactuatorsFor control or on/off applications29
EVERYTHING FROM A SINGLE SOURCEControl valves, actuators, and accessories30
Control valves Valve sizeNPS ½ to 28 (DN 15 to 700) Pressure ratingClass 150 to 2500 (PN 10 to 420)Flanged, threaded, or welding endsGlobe, angle, or three-way valvesMetal or soft seatedCryogenic and high-temperature versions Options:–– Metal bellows seal–– Heating jacket–– Low-noise and anti-cavitation trims Actuatorsand accessoriesDouble-acting and single-acting pneumatic actuatorsEmergency manual overridePneumatic or electropneumatic positionersTROVIS-VIEW configuration softwareValve signature recorded by Type 3730-6 Positioner withpressure sensorsBoostersSolenoid valvesLimit switchesFilter regulators31
SAMSON AT A GLANCESTAFFPRODUCTION SITES–– Worldwide 4,300–– Europe 3,300–– Asia 500–– Americas 200–– Frankfurt am Main, Germany 1,800–– SAMSON Germany, Frankfurt, established 1916Total plot and production area: 150,000 m²MARKETS–– SAMSON USA, Baytown, TX, established 1992Total plot and production area: 9,200 m²PRODUCTS–– Valves–– Self-operated regulators–– Actuators–– Valve accessories–– Signal converters–– Controllers and automation systems–– Sensors and thermostats–– Digital solutions–– SAMSON Turkey, Istanbul established 1984Total plot and production area: 11,053 m²–– SAMSON China, Beijing, established 1998Total plot and production area: 10,138 m²–– SAMSON India, Pune district, established 1999Total plot and production area: 18,000 m²–– SAMSON Russia, Rostov-on-Don, established 2015Total plot and production area: 5,000 m²–– SAMSON AIR TORQUE, Bergamo, ItalyTotal plot and production area: 27,684 m²–– SAMSON CERA SYSTEM, Hermsdorf, GermanyTotal plot and production area: 14,700 m²–– SAMSON KT-ELEKTRONIK, Berlin, GermanyTotal plot and production area: 1,060 m²–– SAMSON LEUSCH, Neuss, GermanyTotal plot and production area: 18,400 m²–– SAMSON PFEIFFER, Kempen, GermanyTotal plot and production area: 35,400 m²–– SAMSON RINGO, Zaragoza, SpainTotal plot and production area: 18,270 m²–– SAMSON SED, Bad Rappenau, GermanyTotal plot and production area: 10,370 m²–– SAMSON STARLINE, Bergamo, ItalyTotal plot and production area: 26,409 m²SALES SITES–– SAMSON VDH PRODUCTS, the Netherlands–– More than 50 subsidiariesin over 40 countries–– More than 200 representatives–– SAMSON VETEC, Speyer, GermanyTotal plot and production area: 27,090 m²LEUSCH GmbH IndustriearmaturenZiegeleistrasse 10 · 41472 Neuss, GermanyPhone: 49 2131 7699-0 · Fax: 49 2131 7699-129E-mail: info@leusch.de · Internet: www.leusch.de2019-04 · WA328 EN–– Chemicals and petrochemicals–– Power and energy–– District heating and cooling,building automation–– General industry–– Industrial gases–– Food and beverages–– Metallurgy and mining–– Oil and gas–– Pharmaceuticals and biotechnology–– Marine equipment–– Water and wastewater–– Pulp and paper–– SAMSON France, Lyon, established 1962Total plot and production area: 23,400 m²
Special Butterfly Valves 14 Butterfly Valves for Cryogenic Applications 16 Special Butterfly Valves 20 . staff make sure that our butterfly valves are sized, configured, . (labyrinth seal, 4), which is protected inside the body, and the massive seat ring (3) can be replaced as .
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