Limitorque Fluid Power Systems Products Courtesy Of Mead O .
Limitorque Fluid Power SystemsMead O'Brienwww.meadobrien.com (800) 892-2769 Limitorque LDGTMLimitorque Direct Gas Powered Scotch Yoke Heavy-Duty Actuator
Limitorque Fluid Power SystemsMead O'Brienwww.meadobrien.com (800) 892-2769 Limitorque Fluid Power SystemsIntroductionKey BenefitsThe Limitorque Fluid Power family of heavy-duty actuatorspresents the Limitorque Direct Gas Scotch Yoke ActuatorsLDG. Reduced equipment footprint due to compact dimensions and design.Today’s industry requirements are more rigorous than everbefore. Nowhere is this more evident than in the oil and gasindustry, where new requirements are incorporated intoproject specifications almost every day and emphases onpersonnel safety and equipment uptime is the norm. Robust ,cost effective modular construction for minimizing repair expensesand maximizing process availability.The Limitorque Direct Gas (LDG) actuator has been specificallydesigned to operate on high pressure pneumatic supply,including pipeline gases, nitrogen and any other equivalenthigh pressure source. This makes it a robust and efficient wayof providing reliable pipeline valve automation, even whenno external motive power supplies are present. Based onLimitorque’s high efficiency scotch-yoke modules, the selfcontained system includes both the gas powered actuation unitand the high pressure gas control circuit.The LDG range of Limitorque direct gas powered actuatorsare available in both spring-return and double-actingconfigurations. They are suitable for actuating ball, butterflyand plug valves or any other quarter-turn application.LDG gas powered actuators deliver up to 300 kNm (221 000ft-lb)* of precisely controlled torque. The LDGis available in a selection of standard as well as specialmaterial executions, upon request.The actuator features a 25-year design life, dependingon service conditions, proper installation, operation andmaintenance. In order to achieve this industry-leading designlife, in-field maintenance is prescribed to be performed everysix years of operation. For high-cycle applications, morefrequent maintenance of replaceable wear surfaces, as outlinedin EN 15714, may be required.To complete the actuation package, LDG actuators aresupplied with the on board Medium-High Pressure Controlgroup (MHPC) including both local and remote operationconfigurations and multiple optional functionalities areavailable to meet all pipeline application requirements.Limitorque also provides engineering design services formounting hardware, ensuring that your actuation solution isready to handle the toughest challenges.* For higher torque ranges, consult factory.2 Improved Lifespan with 25 years design life and maintenance interval up to 6years or as prescribed in EN 15714 for high-cycle applications. Simplified on-site maintenance for standard activities such as replacementof scotch yoke sliding block without removing the actuator from the valve. Reduced environmental impact through Limitorque’s high pressure ratedMHPC control group that minimizes gas consumption and exhaust.
Limitorque Fluid Power SystemsMead O'Brienwww.meadobrien.com (800) 892-2769flowserve.comLDG: Limitorque Direct Gas Heavy-Duty Scotch Yoke ActuatorsWith a design life of 25 years* and a maintenance interval up to six years*, the LDG range is a high pressure pneumatic heavy-duty actuator, with anoutput torque up to 300 kNm (221 000 ft-lb). Enhanced performance is achieved by using a superior scotch yoke support design that significantlyreduces transverse loads. LDG actuators feature modular construction to minimize repair time and initial cost while maximizing process availability.Features Spring Return Single Acting (Fail Close CW and Fail Open CCW) and Double Acting (Fail Last / Fail As Is)executionsLDGAvailable Configurations True modular design for flexible and easy field conversion from Fail Close CW to Fail Open CCWconfiguration or vice versa Symmetrical and canted scotch yoke types to perfectly fit valve torque requirement Fabricated carbon steel scotch yoke housing, high pressure pneumatic cylinder and spring can, providingthe most rugged actuator available; different materials of construction for polar or offshore applicationsupon request ENP Lined Cylinders with Chrome Plated Piston Rod; Stainless Steel Cylinders, Tie Rods and Spool Piecesavailable upon request Available for use in safety integrated systems up to and including SIL Level 3 in accordance with IEC61508LDG Double Acting Suitable for use in on/off and modulating valve application, in general service, isolation service and safetyapplications such as ESD or HIPPS On board Medium-High Pressure Control group (MHPC) including both local and remote operationconfigurations and multiple optional functionalities are available to meet all pipeline applicationrequirements MHPC components are all rated for full system pressure. High pressure rating of controls and actuatorpower cylinder eliminates need for pressure reducer, reducing system complexity, eliminating risks of gascondensation and freezing, allowing higher torque output with smaller overall dimensions and reducinggas use and exhaust. Dedicated MHPC control component enclosure in stainless steel with integral teminal box in anodizedaluminiumLDG Single Acting – Fail Close (CW) MHPC anodized aluminium piping manifold simplifies piping and wiring assembly and minimizes leakpaths in gas control circuit. A full range of accessories including switchboxes, ESD & PST functionalities, custom control functions,fire protection systems and hydraulic manual overrides are available for the LDGSpecifications Available in standard single-acting spring return and double-acting configurations, in torque ranges up to300 kNm (221 000 ft-lb); contact factory for larger sizes 105 barg (1500 PSIG) maximum allowable working pressure (MAWP) for both LDG actuator and MHPCcontrol group -29 C to 100 C (-20 F to 212 F) standard operating temperature range; Low temperature -60 C (-76 F)and high temperature 160 C (320 F) ranges available upon request (polar, cold, arid and tropicaltemperature requirements in accordance with IEC 60721) End mounted adjustable travel stops 5 , available also in an enclosed protected version upon requestKey Certifications and Standards ComplianceLDG Single Acting – Fail Open (CCW)Manual Overrides Hydraulic Hand-Pump Certified according to ATEX 94/9/EC Ex II 2GD c IIC T6 IP66/IP66M and IP67/IP67M configurations (MHPC is IP67) Standard output valve interface in compliance with ISO 5211 Actuator spring design in compliance with EN 13906 Corrosion protection in compliance with ISO 12944-2 and EN 15714-4; optionally available up to andincluding C5-M Available in compliance with NACE specification MR0175 for sour gas applications Available in compliance with PED 97/23/EC, ASME BPVC Sec. VIII Div. 1, EN 13445-3 Part 2 for UnfiredPressure Vessels Manufactured and tested in compliance with ISO 9001 and EN 15714-4* Depending on service conditions, proper installation, operation and maintenance.3
Limitorque Fluid Power SystemsMead O'Brienwww.meadobrien.com (800) 892-2769 Anatomy of Limitorque LDG ActuatorThe LDG range of Limitorque Gas Powered actuators is a robust, modular Scotch yoke design, available in bothspring return and double acting configurations. The design philosophy introduced on the heavy-duty LPS actuatorhas been adopted for the LDG ranges, delivering enhanced performance and high reliability. The LDG isavailable in a selection of standard as well as in different and special material executions, upon request.10End Flange9Hex Nut1711Guide Ring12O-Ring161413Split CollarTie Rod15Fork18Slider BlockYoke Pin19Guiding BlockHead Flange8Stop Bolt7Piston6Piston Rod5Cylinder4BushingLDG Spring Return Actuator3Scotch YokeLDG Standard Materials of n Steel2Scotch Yoke BushingCarbon Steel3Scotch HSStandardMaterials of ITEMConstruction123456785 HousingCylinderPTFE SteelMATERIALCarbon Steel (with treatment)Carbon SteelScotchYokeBushingCarbonSteel6Piston RodAlloy Steel (chrome plated)YokeCarbon Steel7 Scotch PistonCarbon Steel (with treatment)BushingPTFE Steel8Stop BoltCarbon Steel (with treatment)CylinderCarbon Steel (with treatment)Piston RodAlloy Steel (Chrome plated)PistonCarbon Steel (with treatment)Carbon Steel (with treatment)2Scotch YokeBushing* Special or different materials available upon requestITEM141516171819209Hex NutDESCRIPTIONMATERIALCarbon SteelMATERIAL10 Tie rodEnd FlangeAlloy Steel (withCarbonSteeltreatment)11 Head FlangeGuide RingCarbon Steel PTFE Graphite12 Yoke PinO-Ring1HousingAlloy Steel NBRFork13Split CollarCarbon Steel Alloy SteelSlider BlockBronzeGuiding Block Carbon SteelGuide BarAlloy Steel (Chrome plated)Cover
Limitorque Fluid Power SystemsMead O'Brienwww.meadobrien.com (800) 892-2769flowserve.com82119201817LDG Double ActingActuator1615141320Guide Bar12111021Cover2143567822Spring Rod23Spring24Spring Guide25Spring Can8Stop BoltITEMDESCRIPTIONMATERIAL14Tie RodAlloy Steel (with treatment)15Head FlangeCarbon SteelITEMDESCRIPTIONMATERIAL16Yoke PinAlloy Steel21CoverCarbon Steel17ForkCarbon Steel22Spring RodAlloy Steel18Slider BlockBronze23SpringSpring Steel19Guiding BlockCarbon Steel24Spring GuideCarbon Steel20Guide BarAlloy Steel (chrome plated)25Spring CanCarbon Steel5
Limitorque Fluid Power SystemsMead O'Brienwww.meadobrien.com (800) 892-2769 LDG Actuator Selection TableSeals MaterialCode MaterialTemperature RangeClimate ClassificationAccording to IEC60721BBunaStd Temp: -29 C to 100 C (-20 F to 212 F)VViton Hi Temp: up to 160 C (320 F)SSiliconLow Temp: down to -40 C (-40 F)TemperateZOtherSpecial Applications - Consult FactoryCold & PolarLDG Sizing and SelectionTropical and AridSymmetric Scotch Yoke Output TorqueSymmetric Scotch Yoke Output TorqueCantedCantedScotchYoke Output TorqueScotch Yoke Output TorqueValve demandTorqueValve demandTorque0,8252550,825255 Output TorqueOutput TorqueDue to the Scotch yoke mechanism, LDG actuators have a particular U-shaped output torque curve, whether powered by a fixed supply pressure or the spring.In sizing of actuators powered directly by pipeline gas, care must betaken to evaluate the valve torque requirements against the actuatoroutput torques at the varying pressures in the actual pipeline. 45 090 For a proper actuator model selection, the safety factors between actuValve OpenValve ClosedValve Position [ ]0,666667ator output torque and valve torque requirement shall be calculated at 04590least in six points along the valve stroke, and as minimum, at the miniValve OpenValve ClosedValve Position [ ]mum and maximum pipeline normal operating pressures.0,666667In addition, a final check is necessary to guarantee that actuatorMaximum Output Torque does not exceed valve Maximum AllowableStem Torque (MAST).The minimum set of parameters and features necessary for an optimalactuator selection: Valve torques at minimum and maximum pipeline pressure, including04590MASTValve ClosedValve OpenValve Position [ ] Type of actuator:– Single Acting/Spring Return: Fail Safe Close (CW) or Fail Safe OpenDetailed output torque graphs covering the full valve stroke areavailable for both spring return and double acting actuators.(CCW)– Double Acting configuration for Fail Last or Fail As IsDefinitions Minimum and Maximum gas supply pressure to the actuatorBTOBreak to open torqueBTCBreak to close torque Gas composition (H2S content) in case of sour gas applicationsRTORunning to open torque RTCRunning to close torque Safety Factors requested by the project or by a specific applicationETOEnd to open torqueETCEnd to close torque Working Temperature rangeMaximum allowable Open/Close stroking timesMASTSFSafety factorstem torque Additional options (manual override, limit switches, specific functionalrequirements such as line-break, low or high pressure trip, etc, othersas applicable) Symmetric Scotch Yoke Output TorqueCanted Scotch Yoke Ouput TorqueOutput TorqueValve demand Torque*Viton is a registered trademark of E. I. du Pont de Nemours.6
Limitorque Fluid Power SystemsMead O'Brienwww.meadobrien.com (800) 892-2769flowserve.comLDG Torque and Pressure 50LDG-60MOTMaximum Operating TorqueNm (ft-lbf)6000 (4425)12000 (8851)21000 (15489)40500 (29871)75000 (55317)150000 (110634)300000 (221268)Consult FactoryControl System OptionsLimitorque offers a selection of standard and customcontrols packages for most applications, including: Torque limiting devices Pneumatic and electronic line-break systems High / Low pressure pilots ESD functionMOPMaximum Operating PressureBarg (PSIg)MAWPMaximum Allowable Workng PressureBarg (PSIg)Variable for every cylinder sizeVariable for every cylinder sizeFlowserve SolutionsIn addition to providing actuators and controls, Flowserve andLimitorque lead the industry with all the solutions that ourcustomers need to maintain efficiency and productivity. Aftermarket Parts and ServicesBusiness AssesmentsActuator Inspection, Maintenance and RepairEngineering and Technical Services- Engineering Support and Technical Assessments- Equipment Performance Analysis and Upgrades Education and Training- On-site and Online Trainings Asset Data Management and Optimization SolutionsLimitorque Additional Product Range OfferingElectric Actuators and ControlsGearboxes V – Bevel gearboxes for manual or motorized operation WG – Worm gearboxes for manual or motorized operation SR – Spur gearboxes for manual or motorized operationMX — Non-intrusive, electronic multi-turn actuatorsQX — Non-intrusive, electronic quarter-turn actuatorsMaster Station, Controller for redundant networked actuatorsNetwork Controls, Modbus, Profibus DP/PA, FoundationFieldbus, DeviceNet, HART L120 — Electro-mechanical, Multi-turn electric actuatorswith integral & network controls SMB — Electro-mechanical, Multi-turn electric actuatorsfor nuclear and severe duty serviceFluid Power Actuators Scotch Yoke Pneumatic actuators — LPSCompact Scotch Yoke Pneumatic actuators — LPCScotch Yoke Hydraulic actuators — LHS/LHHDirect Gas actuators — LDGCompact Scotch Yoke Hydraulic actuators — LHC*Linear Pneumatic actuators — LPLLinear Hydraulic actuators — LHLGas Over Oil actuators — LGO*Electro-Hydraulic actuators — LEH*Standard and Customized ControlsApplication Engineering SupportOne Flowserve SolutionFlowserve brands for most common control accessories: Digital Positioners–– Logix–– PMV Valve Controllers–– Automax–– Worcester Controls Analog Positioners–– PMV–– Accord Limit Switch Boxes–– Worcester Controls–– PMV–– Automax–– AccordTMTMTM Diagnostic Software–– ValveSightTMTMTM* Contact Flowserve for product availability and additional information.7
Limitorque Fluid Power SystemsMead O'Brienwww.meadobrien.com (800) 892-2769To find your local Flowserve representativeor for more information about Flowserve Corporation,visit www.flowserve.com or call USA 1 800 225 6989 orInternational 1 972 910 0774FCD LFENBR0005-01-A4 10/16Printed in USA.Flowserve Corporation has established industry leadership in the design and manufacture of its products. When properly selected, this Flowserve product is designed toperform its intended function safely during its useful life. However, the purchaser or user of Flowserve products should be aware that Flowserve products might be used innumerous applications under a wide variety of industrial service conditions. Although Flowserve can (and often does) provide general guidelines, it cannot provide specificdata and warnings for all possible applications. The purchaser/user must therefore assume the ultimate responsibility for the proper sizing and selection, installation,operation, and maintenance of Flowserve products. The purchaser/user should read and understand the Installation Operation Maintenance (IOM) instructions includedwith the product, and train its employees and contractors in the safe use of Flowserve products in connection with the specific application.While the information and specifications contained in this literature are believed to be accurate, they are supplied for informative purposes only and should not be considered certified or as a guarantee of satisfactory results by reliance thereon. Nothing contained herein is to be construed as a warranty or guarantee, express or implied,regarding any matter with respect to this product. Because Flowserve is continually improving and upgrading its product design, the specifications, dimensions andinformation contained herein are subject to change without notice. Should any question arise concerning these provisions, the purchaser/user should contact FlowserveCorporation at any one of its worldwide operations or offices. 2016 Flowserve Corporation, Irving, Texas, USA. Flowserve is a registered trademark of Flowserve Corporation.Flowserve LimitorqueFluid Power SystemsProduct SalesVia Rio Vallone 1720883 Mezzago (MB), ItalyPhone: 39 039 62060 1Fax: 39 039 62060 213Email: lfpsinfo@flowserve.comFlowserve LimitorqueFluid Power SystemsManufacturing and Operations ViaRio Vallone 1720883 Mezzago (MB), ItalyPhone: 39 039 62060 1Fax: 39 039 62060 213Email: lfpsinfo@flowserve.comFlowserve LimitorqueFluid Power SystemsResearch and DevelopmentVia Belizzi 40/4229122 Piacenza (PC), ItalyEmail: lfpsinfo@flowserve.com
Limitorque Fluid Power SystemsMead O'Brienwww.meadobrien.com (800) 892-2769Limitorque LHS and LHHTMLimitorque Hydraulic Scotch Yoke Heavy-Duty Actuator
Limitorque Fluid Power SystemsMead O'Brienwww.meadobrien.com (800) 892-2769Limitorque Fluid Power SystemsThe Limitorque Fluid Power family of heavy-duty actuatorspresents the Limitorque Hydraulic Scotch Yoke ActuatorsSeries LHS and LHH.Today’s industry requirements are more rigorous than everbefore. Nowhere is this more evident than in the oil and gasindustry, where new requirements are incorporated intoproject specifications almost every day and emphases onpersonnel safety and equipment uptime is the norm.To more aggressively meet these demands, FlowserveLimitorque is offering the LHS and LHH Hydraulic ScotchYoke Heavy-Duty Actuator—specifically designed to meet orexceed the latest and most rigorous of these requirements.This makes Limitorque Scotch Yoke Hydraulic Actuators themost technically advanced and market-compliant actuatorsavailable anywhere in the world.The LHS and LHH ranges of Limitorque hydraulic actuatorsarea robust, modular Scotch yoke design, available in bothspringreturn and double-acting configurations. They aresuitable for actuating ball, butterfly and plug valves or anyother quarter-turn application.LHS and LHH hydraulic actuators deliver up to 300 kNm(221 000 ft-lb) of precisely controlled torque. The LHS andLHH are available in a selection of standard as well as indifferent and special material executions, upon request.The same design philosophy, introduced on heavy-duty LPSactuators, has been adopted for the LHS and LHH ranges,delivering enhanced performance and high reliability.The actuator features a 25-year design life, depending on serviceconditions, proper installation, operation and maintenance.In order to achieve this industry-leading design life, in-fieldmaintenance is prescribed to be performed every six years ofoperation. For high-cycle applications, such as control valveoperation, more frequent maintenance of replaceable wearsurfaces, as outlined in EN 15714, may be required.To complete the actuation package, LHS and LHH actuatorsare available with accessories, such as lockout modules,manual overrides and control panels, like hydraul
9 Hex Nut Carbon Steel Spring Rod 10 End Flange Carbon Steel Spring 11 Guide Ring PTFE Graphite 12 O-Ring NBR 13 Split collar Alloy steel. LHS Standard aterials of Construction. Hex Nut 15 O-Ring. Anatomy of Limitorque LDG Actuator. The LDG range of Limitorque Gas Powered actuators is a robust, modular Scotch yoke design, available in both
Flowserve Limitorque is a global leader in quality manufacturing. All Limitorque plants are certified to ISO 9001 standards, the recognized benchmark for quality all over the world. The same unexcelled use of certified materials is found in the QX as in Limitorque’s naval and nuclear-qualified electric actuators. The MX has used
The Flowserve Limitorque QX quarter-turn and MX multi-turn electronic valve actuators lead the industry in quality, safety and ease of use. Both models provide the user with predictable, reliable and safe operation plus extended service life, in the most rigorous applications and extreme environments. Limitorque Electric Actuators
Limitorque is an operating unit of Flowserve, a 4 billion-plus/year company strongly focused on automation and support of the valve industry. Flowserve is the world's premier provider of flow management services. Limitorque has evolved over 80 years since its strategic introduction of a "torque-limiting" design that changed an industry.
L M A B CVT Revision: December 2006 2007 Sentra CVT FLUID PFP:KLE50 Checking CVT Fluid UCS005XN FLUID LEVEL CHECK Fluid level should be checked with the fluid warmed up to 50 to 80 C (122 to 176 F). 1. Check for fluid leakage. 2. With the engine warmed up, drive the vehicle to warm up the CVT fluid. When ambient temperature is 20 C (68 F .
Fluid Mechanics Fluid Engineers basic tools Experimental testing Computational Fluid Theoretical estimates Dynamics Fluid Mechanics, SG2214 Fluid Mechanics Definition of fluid F solid F fluid A fluid deforms continuously under the action of a s
Jul 09, 2015 · Tiny-Fogger/Tiny F07, Tiny-Compact/Tiny C07 Tiny-Fluid 42 Tiny FX Tiny-Fluid 42 Tiny S Tiny-Fluid 43 Unique 2.1 Unique-Fluid 43 Viper NT Quick-Fog Fluid 44 Viper NT Regular-Fog Fluid 45 Viper NT Slow-Fog Fluid 46 Martin K-1 Froggy’s Fog K-razy Haze Fluid 47 Magnum 2000 Froggy’s Fog Backwood Bay Fluid 48
2. LHS Hydraulic actuators deliver up to 250 kNm* (184 000 ft-lb) of precisely controlled torque. LHS Limitorque Hydraulic Actuator is enlarging the recent Limitorque Fluid Power Systems family of heavy-duty scotch yoke actuators. The same design philosophy introduced on heavy-duty LPS actuators has been adopted for the LHS range, bringing enhanced
Research Paper Effect of Population Size and Mutation Rate . . and
