TECHNICAL BULLETIN - Flowserve

TECHNICAL BULLETINValtek Control ProductsSpring Cylinder Linear ActuatorFCD VLENTB0002-15 – 04/07Experience In Motion

Valtek Control Products Spring Cylinder Linear ActuatorFCD VLENTB0002-15 – 04/07Table of ContentsVL SeriesVL-C SeriesVL-UHC SeriesVL-ES SeriesCylinder DataSpring DataManual Handwheel Override SpecificationsAllowable Cylinder Pressure for Balanced ValvesAllowable Cylinder Pressure for Unbalanced ValvesMounting Dimensions, VL, VL-UHCMounting Dimensions, VL, VL-UHC (Continued)Mounting Dimensions, VL-C, VL-ESMounting Dimensions, VL-C, VL-ES (Continued)Unbalanced Valve Actuator Dimensions 345678910121416182022

Valtek Control Products Spring Cylinder Linear ActuatorFCD VLENTB0002-15 – 04/07VL SeriesThe VL series is the standard set of actuators for Valtekcontrol valves, providing precise control and reliable performance. With decades of experience and reliability, VL actuators have been known to be in service for over 30 years.Providing maximum thrust from a compact lightweightpackage, the VL cylinder has set the industry standard fortwo generations.Features and BenefitsFeatureAdvantageWide Range ofOptionsA variety of options and accessories allowthe VL cylinder to fit into almost anyapplication requiring high thrust and lowmaintenance.Compact andLightweightUsing Aluminum cylinder construction, theVL cylinder is exceptionally compact andlightweight.SimpleMaintenancePeriodic maintenance is easy to perform.VL spring cylinder actuators only requiresthe removal of two parts to access allinternal parts.Simple PartsUsing standard O-rings for both static anddynamic seals, the VL cylider actuator softgoods are lower cost and easier to find.Materials of ConstructionPartMaterialYokePhosphated, Painted Ductile IronYoke ClampStainless SteelYoke Clamp BoltsZinc Plated SteelStem Clamp*Phosphated, Painted Ductile IronCylinder RetainingRingZinc Plated SteelActuator Stem416 Stainless SteelStem SpacerAluminumActuator StemLock NutZinc Plated SteelO-RingsBuna-NSpringAlloy SteelSpring ButtonPainted SteelAdjusting ScrewZinc Plated SteelPistonAnodized AluminumBushingsBronze, OiliteCylinderPainted Anodized AluminumOS*Stainless Steel material on 25 and 50 square inchflowserve.com

Valtek Control Products Spring Cylinder Linear ActuatorFCD VLENTB0002-15 – 04/07VL-C SeriesFor applications where aluminum materials are notacceptable, Flowserve offers the compact, lightweight andhigh thrust of the VL-C carbon steel spring cylinder linearactuator. Offering identical springs and all the advantages ofVL actuators, the VL-C actuator replaces all aluminum partswith carbon steel.Offered in two styles, the size 25 and 50 square inch actuators use deep drawn cylinders while the size 100, 150, 200,300 and 400 offers tie rod construction.Materials of ConstructionPartMaterialSize 25 and 50Size 100 and LargerYokePhosphated,Painted DuctileIronPhosphated, PaintedDuctile IronYoke ClampStainless SteelStainless SteelYoke Clamp BoltsZinc Plated SteelZinc Plated SteelStem Clamp*Stainless SteelPhosphated, PaintedDuctile IronCylinder RetainingRingZinc Plated Steel—Tie Rods and Nuts—Carbon SteelActuator Stem416 Stainless Steel416 Stainless SteelStem SpacerCarbon SteelCarbon SteelActuator StemLock NutZinc Plated SteelZinc Plated SteelO-RingsBuna-NBuna-NQuad Seals—Buna-NSpringAlloy SteelAlloy SteelSpring ButtonCarbon SteelCarbon SteelAdjusting ScrewZinc Plated SteelZinc Plated SteelPistonCarbon SteelCarbon SteelBushingsBronze, OiliteBronze, OiliteCylinderZinc Plated,Painted CarbonSteelPainted Carbon SteelEnd Cap—Painted Carbon Steel*Stainless steel material on 25 and 50 square inch. Features and BenefitsFeatureAdvantageCarbon SteelConstructionReplaces all aluminum parts with carbonsteel.Simple maintenancePeriodic maintenance is easy to perform.VL-C spring cylinder actuator sizes 25 and50 only requires the removal of two partsto access all internal parts.Simple PartsUsing standard O-rings for both static anddynamic seals, the VL cylider actuator softgoods are lower cost and easier to find.

Valtek Control Products Spring Cylinder Linear ActuatorFCD VLENTB0002-15 – 04/07VL-UHC SeriesFor applications where ultra high cycle (UHC) life is needed,Flowserve offers the exceptionally long cycle of the VL-UHCseries actuators. By replacing or modifying several partsused in the standard VL series actuator, the VL-UHC gainscycle lives previously thought unattainable.Features and BenefitsFeatureAdvantageLife CyclesExpected lifespan of up to 2 millioncycles!Dynamic QuadSealsAll dynamic seals are quad seal design.This provides better lubrication and muchlonger life.Plug Stem Jam NutProviding better alignment of the actuatorstem and plug stem, the jam nut lengthensthe life span of the bushings.Same SimpleMaintenancePeriodic maintenance is easy to perform.VL-UHC spring cylinder actuator onlyrequires the removal of two parts toaccess all internal parts.Recessed AdjustingScrew O-ringProviding better alignment and suresealing, the recessed adjusting screwO-ring lengthens the life of the actuator.Thrust Bearing forthe SpringThrust bearings prevent windup on thespring, lowering the stresses in the springand giving it longer life.Special SpringsSpecial springs with stronger materialsand better finishes provide exceptionallylong life spans.Expected Life CyclesMaterials of ConstructionPartMaterialYokePhosphated, Painted Ductile IronYoke ClampStainless SteelYoke Clamp BoltsZinc Plated SteelStem Clamp*Phosphated, Painted Ductile IronCylinder RetainingRingZinc Plated SteelActuator Stem416 Stainless SteelStem SpacerAluminumActuator SizeStandard Design1UHC Design225, Standard500,0002,000,000Actuator StemLock NutZinc Plated Steel25, Dual Spring300,0002,000,000O-RingsBuna-N50, Standard300,0002,000,000Quad SealsBuna-NAlloy Steel50, Extended300,0002,000,000Spring50, Dual Spring300,0002,000,000Spring ButtonPainted Steel100, Standard300,0002,000,000Adjusting ScrewZinc Plated Steel100, Heavy Duty150,0002,000,000PistonAnodized Aluminum100, Dual150,0002,000,000BushingsBronze, Oilite200, Standard300,0002,000,000Jam NutZinc Plated Steel200, Heavy Duty150,0002,000,000Thrust BearingDelrin2,000,000CylinderPainted Anodized Aluminum200, Dual150,0001) Soft Goods should be replaced every 100,000 cycles*Stainless Steel material on 25 and 50 square inch2) Soft goods should be replaced every 500,000 cyclesflowserve.com

Valtek Control Products Spring Cylinder Linear ActuatorFCD VLENTB0002-15 – 04/07VL-ES SeriesMaterials of ConstructionPartMaterialYokePhosphated, Painted Ductile IronYoke ClampStainless SteelYoke Clamp BoltsZinc Plated SteelStem ClampPhosphated, Painted Ductile IronTie Rods and NutsCarbon SteelActuator Stem416 Stainless SteelSpring ConnectingRod416 Stainless SteelActuator StemLock NutZinc Plated SteelO-RingsBuna-NQuad SealsBuna-NSpringAlloy SteelSpring HousingPainted Carbon SteelSpring ButtonsCarbon SteelSpring Cap BoltingZinc Plated SteelPistonAnodized AluminumBushingsBronze, OiliteThrust BearingDelrinCylinderPainted Carbon SteelEnd CapPainted Carbon SteelFeatures and Benefits FeatureAdvantageLife CyclesExpected lifespan of up to 2 million cycles!Dynamic QuadSealsAll dynamic seals are quad seal design.This provides better lubrication and muchlonger life.Plug Stem Jam NutProviding better alignment of the actuatorstem and plug stem, the jam nut lengthensthe life span of the bushings.Same SimpleMaintenancePeriodic maintenance is easy to perform.VL-UHC spring cylinder actuator onlyrequires the removal of two parts toaccess all internal parts.Thrust Bearing forthe SpringThrust bearings prevent windup on thespring, lowering the stresses in the springand giving it longer life.Special SpringsSpecial springs with stronger materialsand better finishes provide exceptionallylong life spans.For applications where longer strokes or unusually highspring thrusts are required, Flowserve offers the VL-ESseries actuators. Using many of the same design conceptsas the VL-C, the VL-ES offers external spring cans. Thisallows for extra long springs which provide longer strokelengths and extra force.

Valtek Control Products Spring Cylinder Linear ActuatorFCD VLENTB0002-15 – 04/07Cylinder 5014023.76153.322.97148.1950 0 620015.50394188.701217.430019.50495298.601926.4400 ²15.50394371.502396.850025.25641500.703230.3600 ( ² )19.50495590.20255.5014023.7650 ¹7.75197507.75197100 ¹12.0010012.00( )( )VL-ES( )StemDiameter(in.)in.mmStem Area(in²)Max. Vol. OverPiston 5.68(Note 3) (Note 3) .9825.68(Note 3) (Note 7.23.9825.68(Note 3) (Note 3) 95.9438.32(Note 3) (Note 3) 95.9438.32(Note 3) (Note 3) .10100163911.55150 09.68331542416.172100 .4184.701191.612.2557.23.9825.6820873420031.4140( )VL-UHCLower CylinderArea (in²)mm( )VL-CUpper CylinderArea (in²)in.( )VLCylinder BoreDiameter( )(1) Used as oversized actuators in place of the next size smaller actuator(2) Tandum, double piston configuration(3) Maximum volume over the piston (Cylinder Area - Stem Area)*(Stroke Length 0.375 inch)flowserve.com

Valtek Control Products Spring Cylinder Linear ActuatorFCD VLENTB0002-15 – 04/07Spring DataActuatorDesignCylinderSizeSpring --------1.00 to 73082914471988--------Standard2.00 to 4.00172570193001334172575443001334Heavy2.00 to 4.0031681409253523803168140925352380Dual2.00 to 4.005241233138853937--------Standard0.75 to ------1.00 to 1.50107547824562028--------DualStandard1.5 to 3.0061527361647306562918164730Dual1.5 to 3.00186482914471988--------Standard2.00 to 4.00172570193001334172575443001334Heavy2.00 to 4.0031681409253523803168140925352380Dual2.00 to 4.005241233138853937--------2.5 to dard300HeavyStandard400HeavyStandard 8411864200100 & 2001891.5 to 3.00Standard5018501.5 to 3.00HeavyVL-UHC416Dual15025Air-to-Close (Air-to-Extend)Spring CompressedSpring RateForcelbNlbNStandardStandardVL-ES0.75 to 1.50Air-to-Open (Air-to-Retract)Spring CompressedSpring RateForcelbNlbNDual5 to 83014134071828103014134071828102.5 to 4300013345300133430001334530013345 to 83014134071828103014134071828102.5 to 4602326752771343060142675277134305 to 8652429020434193165242902043419312.5 to 4300013345300133430001334530013345 to 83014134071828103014134071828102.5 to 4602326752771343060142675277134305 to 8652429020434193165242902043419312.5 to 4576425640448199357642564044819935 to 8585426040308137058542604030813702.5 to 411490511108873946114905111088739465 to 811551513815192309115515138151923092.5 to 4576425640448199357642564044819935 to 8585426040308137058542604030813702.5 to 411490511108873946114905111088739465 to 811551513815192309115515138151923090.75 to -------1.00 to 1.50102135194652068--------Standard1.50 to 2.5059426421667386682971166738Dual1.50 to 2.50190584745062251--------Standard2.00 to 4.00145064502891286163671972891286Dual2.00 to 4.004083181628053581--------