MaxFlo 3 Control Valves - Nooney Controls

1 MaxFlo 3 Control Valves2 Valtek MaxFlo 3 Control ValvesFlowserve Corporation, Valtek Control Products, Tel. USA 801 489 8611 Figure 1: MaxFlo 3 Control Valve with ValtekHigh-Performance Diaphragm Actuator andLogix 500 Digital Positioner(HART compatable)Figure 2: Safe, Reliable,Anti-Blowout Shaft DesignFigure 4: Robust, ReliableFlanged End Plug DesignFigure 3: MaxFlo 3 Control Valve with ValtekHigh-Performance Spring Cylinder RotaryActuator and XL90 Positioner3 Valtek MaxFlo 3 Control ValvesFlowserve Corporation, Valtek Control Products, Tel. USA 801 489 8611 IntroductionNon-crossover shaftallows greater CVFigure 5: MaxFlo 3 Rotary Eccentric Plug Control Valve, Body SubassemblyExtendedbonnetThrust runner Integral to the shaftoffers anti-blow out protection onshaft, increased safetyReliable, heavy-dutyflanged-end postconstructionHigh PerformanceThe Valtek MaxFlo 3 Control valve is a high-performance, eccentric rotary plug design, which isused in low-pressure, high CV applications.

2 TheMaxFlo 3 valve is capable of operating temperaturesbetween -150 to 752 F/ -100 to 400 MaxFlo 3 eccentric plug offers rangeability upto 160:1 compared to 50:1 for typical globe valvesand 20:1 for most butterfly heavy-duty, non-crossover shaft is out of thevalve s flow path. This superior design allows higherflow capacity for a given valve size. It also eliminatesshaft damage from erosive process fluids. Manyother manufactures designs allow the shaft tocrossover the flow path, resulting in lower flowcapacity and shaft MaxFlo 3 Control valve is available in 1- through12-inches in a flanged body style (ANSI Classes 150and 300 / PN 16 to 40). Multiple reduced trims foreach valve size are available. These trim reductionsallow a wide range of CV values in each valve size,providing accurate, precise Control across thecapacity of the valve with extremely fine positioners offered on the MaxFlo 3 allow the controlvalve to respond to small signal changes withoutovershoot.

3 The XL, XL90, Logix 500 and Logix 1000positioners can respond precisely to percent signalchanges. This accuracy allows the MaxFlo 3 Control valveto precisely Control the process the valve opens and the plug rotates smoothly out of theseat (Figure 6), the chances of water hammer aresignificantly reduced. And, since the plug and non-cross-over shaft do not obstruct the flow, the MaxFlo 3 valve ob-tains a higher flow coefficient (CV) rating than othertraditional rotary Valves . This is why MaxFlo 3 can obtain arangability of 160:1. In addition, the MaxFlo 3 design has azero breakout torque requirement, which allows smaller ac-tuators to be used reducing costs and maintenance these features make the MaxFlo 3 Control valve themost accurate, precise, eccentric rotary plug valve on themarket. High performance is the first key point in the coredesign principles behind the MaxFlo 3 Control 3 raises the bar to the highest standards of reliabilityThrustbearing4 Valtek MaxFlo 3 Control ValvesFlowserve Corporation, Valtek Control Products, Tel.

4 USA 801 489 8611 Increased SafetyAn additional point in the core design principles behindthe MaxFlo 3 Control valve was increased section states Valves should bedesigned to prevent the stem from being removed whilethe valve is under pressure. Flowserve has taken thissafety issue one step further. The unique MaxFlo 3stem, with the integral thrust runner on the shaft, can-not be removed unless the bonnet nuts are removed(See Figure 5). Many other rotary Control Valves do notinclude anti-blow out protection on shaft; designs of-fering anti-blow out protection lack the robust charac-ter MaxFlo 3 Control Valves provide (See Figure Nos. 2and 5). Accidents, safety incidents and failures havebeen attributed to other Valves lacking the unique fea-tures of the MaxFlo 3 Control MaxFlo 3 Control valve s durable flanged endpostdesign eliminates all possibility of any parts comingloose and traveling downstream. The flanged end postis held in place by four bolts.

5 It can t come loose likeother manufacturers designs; thus eliminating any leakpath. The MaxFlo 3 plug design will either fail-open(shaft downstream) or closed (shaft upstream) in theevent of air or instrument signal LifeLonger life is also a key principle behind the MaxFlo 3control valve. Its oversized shaft eliminates shaft failuresIntroductionand provides a large shaft bearing surface, reducingbearing wear, improving reliability and increasing thelife of the valve. The plug is produced from hardened17-7PH material to increase plug life, provide tightshutoff and increase reliability in a wide range of difficult-to-handle applications (including flashing, erosive, mildcavitation and steam services). The rugged plug designreduces valve failure caused by water non-crossover shaft allows for uninterrupted the valve is in the open position, the fluid flow isnot deflected into the seat or retainer, providing greaterreliability even after years of service.

6 The durableflanged endpost design provides a robust bearingsurface. Since the endpost is held in place by four bolts,it can t come loose in service like other manufacturers designs (see Figure 4).The typical maintenance cycle for the MaxFlo 3 valveexceeds five years and more than 20 years for totalvalve cycle expectancy. Most MaxFlo 3 actuators havea cycle life exceeding one million cycles, making theMaxFlo 3 design one of the most reliable Control valveson the certification is available with the MaxFlo 3 Valtek packing sets, such as SureGuard packing, are available to Control fugitive emissions andto meet Environmental Protection Agency (EPA) MaxFlo 3 double-offset eccentric plug rotates intothe seat at an angle that eliminates sliding over theseat surface (Figure 7). The design reduces seat wear,and thereby decreases maintenance requirements andcosts. At the same time, a tight ANSI Class VI shutoffis easily obtainable using the soft seat 6: MaxFlo 3 Plug OpenFigure 7: MaxFlo 3 Plug Closing5 Valtek MaxFlo 3 Control ValvesFlowserve Corporation, Valtek Control Products, Tel.

7 USA 801 489 8611 Features and AdvantagesHigh PerformanceFeaturesAdvantagesHigh flow coefficientsUp to 70 percent more flow than other manufacturers rotary eccentric plugdesigns (reduced trims also available).Non-crossover shaftShaft is out of flow path for higher flow capacities and less erosion may be used in paper pulp concentrations to 3 percentHigh rangeabillityFor high rangeabillity up to 160:1. Rangeabillity due to non-crossover shaftdesign. Allows accurate throttling ability over a very wide throttlingPlug throttles without contacting , XL90, Logix 500 and Logix 1000 positioners provide precise,positionersaccurate process Control by responding to signal changes of percentwithout controlRangeability up to 160 shutoffAllows valve to be mounted with shaft upstream or downstreamFlangedANSI Classes 150-300 (PN 16-40)Reduced trimsAvailable in 100, 75/70 and 40 percentOperating temperatures-150 F to 750 F (-100 C to 400 C)Sizes1, , 2, 3, 4, 6, 8, 10, 12 (inches)Shutoff rating (ANSI)Metal seat: Class IV / Soft seat: Class VIIncreased SafetySuperior qualityStandard shaft and trim materials allow higher pressure drops than othermanufacturers rotary eccentric plug designs, especially in NACE and lightweight for easy handling and , anti-blowout shaftWhile conventional rotary Control Valves do not offer anti-blow out shafts, theunique MaxFlo 3 shaft design alleviates this problem.

8 This feature also mini-mizes the risk of personal injury, fire and severe process leakage due to shaftblow out. During disassembly, removal of the valve shaft requires the removalof the bonnet , flanged heavy-The heavy-duty flanged end post construction ensures no parts of the valve canduty end post construction come loose and enter process line. Also, because ofthe robust flange, the gasket is uniformly compressed, thus eliminating leakagefrom the end post fail actionFluid assists the plug to fail-open or fail-closed upon air LifeRobust post designPost or other parts cannot come loose in service and travel rotary plugNo breakout lifts off seat immediately, reducing seat plug design17-7PH plug is standard plugEasier shaftReduced cost replace only the part needed, not entire certificationAllows valve s use in petrochemical packing optionsConfigurations/materials available for most applications. Fugitive emissionoptions meet EPA , Certified material test reportExternal BonnetThe external bonnet increases packing life and allows easier maintenance6 Valtek MaxFlo 3 Control ValvesFlowserve Corporation, Valtek Control Products, Tel.

9 USA 801 489 8611 SpecificationsMaxFlo 3 Sizing Procedure and DataProcedures and data to size MaxFlo 3 Valves includingdetermining actuator size are contained in the ValtekPerformance! valve sizing I: Body SpecificationsSizes (inches)1, , 2, 3, 4, 6,8,10,12 End ConnectionFlanged, Flangless (1-8 inch)Body ratingANSI Class 150-300 / PN 16-40 Trim Area100% (full), 75/70% reduction,40% reduction 25/15 percentShutoff ratingANSI Class IV, ANSI Class VIwith soft seatOperating-150 to 752 F / -100 to 400 CtemperaturePneumaticDiaphragm: NR1, NR2, NR3 ActuatorCylinder: 25, 50, 100, 200 manualPositionerPneumatic: 3 - 15, 6 - 30 psi - , - bar;Electro-pneumatic:4-20, 10-50 mACharacteristicsLinear, equal percentFail ModeAir-to-close, air-to-open,lock-in-placeBodyCarbon steel (A216 WCC)Stainless Steel (A351 CF8M)PlugDIN , 316L w/Alloy 6 overlayShaft17-7PH, A453 Gr 660 End PostA564 Gr 631 (17-7PH),A453 Gr 660 Bearings440C, UNSS31803 (Duplex 2205)Sealed Bearings440C, UNSS31803 (Duplex 2205)Seat RetainerStainless steel (A351 CF8M), 8-inch and smaller (A182 G F6 400series SS for 10/12-inch Ring316L Stainless steel, 316Lw/Alloy 6 overlay, 416 HTSoft SeatPTFEP ackingPTFE V-ring, Graphite rib/braid,SureGuard, SafeGuard(XT and Firesafe)Table II: Materials of Construction* Actual data dependent on trim size and material, actuator size, and shaft orientation.)

10 Allowable drop should be determined afterdetailed sizing is complete in Performance valve sizing software.(inches)Table III: Maximum Allowable P*ValveMaximum AllowableSizeDifferential Pressurepsibar1 87255010450311232022 Table IV: Maximum Flow Capacity (CV)Trim SizeBody10075/7040 SizeShaft Direction(inches)UpDownUpDownUpDownMetal SoftMetalSoftMetalSoftMetalSoftMetal Soft Metal Soft1 2112181015 813 7 8 6 7 611/25042473935353333202019192 7869807143435252242432323214214241241167 1671821829595104104430230240540522022026 7267150150170170673073095595556756766966 9324324382 3828847113017001700847847127512751017851 7852505250513391339187918791225602560360 036001920192027002700 NotAvailable7 Valtek MaxFlo 3 Control ValvesFlowserve Corporation, Valtek Control Products, Tel. USA 801 489 8611 TypesDouble-acting cylinder with fail-safe spring actionSizesCylinder sizes: 25, 50, 100, 200 ActionAir-to-open, air-to-close;Fail-in-placeSupply Pressure150 psig* (maximum) barg* (maximum)AuxiliaryDeclutchable side-mounted;Handwheelsmanual gear-operated; handleverAnalogBeta pneumatic and I/PPositionersXL90 pneumatic and I/PXL pneumatic and I/PDigitalLogix 1000 SeriesPositionerSpring Cylinder Rotary ActuatorsActuator spring forfail-safe operationAdjustable strokestops preventexcessive rotationand reduceexcessive torqueon shaftRockingpistonprovidesdirectconnecti onto shaftFigure 8: Spring Cylinder Rotary ActuatorTable V: Spring CylinderRotary Actuator Specifications* Some restriction may apply to certain applicationsSpring Cylinder Rotary ActuatorThe Valtek spring cylinder rotary actuator combineshigh torque and pneumatic stiffness with excellent throt-tling capabilities.