Edward Valves - Flowserve

Edward ValvesMaintenance Manual forEdward Pressure-Seal ValvesV-377 R4

Flow Control DivisionTable of ContentsKey to Illustrations .3Pressure-Seal Valve Figure Numbers .3Introduction .3Description of Pressure-SealValve Bonnet Types(Illustration, description and figure numbers)Type I .4Type II .5Type III.6Type IV .7Service ProblemsPacking Chamber Leak .8Packing Recommendations .8Pressure-Seal Gasket Leaks.10Pressure-Seal Leak .10Seat and Disk Joint Leaks .10Body Wall Leaks .12Objectionable Vibration, Noise orExcessive Pressure Drop.12Valve Lubrication.12Repair ProceduresValve Body Repairs .13Body Bore Gasket Seal Area Repair .13Body Bore Guide Rib Repair .13Seat and Disk Repair .14Body Wall Repair .15Valve Component Repair .15Disk-Piston Assembly Repair .15Bonnet or Cover Repair.16Welding Rod Recommendations.16Field Repair Equipment .17Disassembly Procedures forPressure-Seal ValvesIntroduction .18First Determine the Area of Failure .18Disassembly Procedures forImpactor Handles and HandwheelsNon-Ball Bearing ImpactorHandles and Handwheels.20Ball Bearing Impactor Handwheels .21Procedures for Removing LimitorqueOperators from Valve YokesRevolving Stem Valves or Non-RevolvingStem Valves with Torque-Only Units.22Non-Revolving Stem Valves withTorque and Thrust Units .23Procedures for Setting Actuator Torqueand Limit SwitchesLimitorque Limit Switch andTorque Switch Setting Procedures .24Geared Limit Switch .24Torque Switch .25Single Torque Switch .25Double Torque Switch .25Torque Switch Setting.26Disassembly Procedures for Yoke AssembliesRevolving Stem Valveswith Type I Bonnets .27Revolving Stem Valveswith Type II Bonnets .28Non-Revolving Stem Valveswith Type II or III Bonnets.28Valves with Type IV Bonnets .28Procedures for Removing Operatorand Yoke Assembly as a UnitRevolving Stem Valveswith Type I Bonnets .29Revolving Stem Valveswith Type II Bonnets .29Non-Revolving Stem Valveswith Type II, III or IV Bonnets.30Disassembly Procedures forBonnet TypesType I Pressure-Seal Bonnets– Stop and Stop-Check(Non-Return) Valves .31– Piston-Lift Check Valves .32Type II Pressure-Seal Bonnets– Stop and Stop-Check (Non-Return)Valves with Revolving Stems .33– Stop and Stop-Check (Non-Return)Valves with Non-Revolving Stems .34Edward ValvesType III Pressure-Seal Bonnets– Stop and Stop-Check(Non-Return) Valves .36– Piston- Lift Check Valves .37– Tilting Disk Check Valves .38Type IV Pressure-Seal Bonnets– Stop and Stop-Check(Non-Return) Valves .39– Piston-Lift Check Valves .41Assembly of Composite PressureSeal Gaskets .42Reassembly Proceduresfor Metal Pressure-Seal ValvesIntroduction.43Type I Pressure-Seal Bonnets– Stop and Stop-Check(Non-Return) Valves .44– Piston-Lift Check Valves .45Type II Pressure-Seal Bonnets– Stop and Stop-Check (Non-Return)Valves with Revolving Stems .45– Stop and Stop-Check (Non-Return)Valves with Non-Revolving Stems .45Type III Pressure-Seal Bonnets– Stop and Stop-Check(Non-Return) Valves .46– Piston-Lift Check Valves .46– Tilting Disk Check Valves .47Type IV Pressure-Seal Bonnets– Stop and Stop-Check(Non-Return) Valves .47– Piston-Lift Check Valves .47General Information.48Supplementary Repair Information.back coverOrdering Parts.back cover2

Flow Control DivisionEdward ValvesTable of Contents (continued)IntroductionKey to IllustrationsIllusI234567891011121314No. TitlePagePressure-Seal Bonnet Type I.4Pressure-Seal Bonnet Type II .5Pressure-Seal Bonnet Type III .6Pressure-Seal Bonnet Type IV.7Typical Globe Valve Nomenclature.11Pressure-Seal Bonnet Seal Angle.16Portable Lapping Tool forLarge Valves .17Van Norman PortableGrinding Machine .17Van Norman PortableBoring Machine .17Impactor HandwheelNon-Ball Bearing Types .20Impactor HandwheelNon-Ball Bearing Types .20Impactor HandwheelNon-Ball Bearing Types .20Impactor HandwheelBall Bearing Type (with Impactogear).21Torque-only Limitorque Operator onRevolving Stem Valve (SMA or SMB) .22Illus No. TitlePage15 Torque-only Limitorque Operator onRevolving Stem Valve (SMB-4T or 5T).2216 Torque-only Limitorque Operator onNon-Revolving Stem Valve .2217 Torque and Thrust Limitorque Operatoron Non-Revolving Stem Valve .2318 Limitorque Geared Limit Switch Assy.2419 Single & Double TorqueSwitch Assemblies .2520 Type I Bonnet on Stop-Check Valve .2721 Type I Bonnet on Piston-Lift Check Valve .2922 Type II Bonnet on RevolvingStem Stop Valve .3023 Type II Bonnet on Non-RevolvingStem Stop Valve .3124 Type III Bonnet on Stop Valve.3425 Type III Bonnet on Piston-LiftCheck Valve .3526 Type III Bonnet on TiltingDisk Check Valve.3827 Type IV Bonnet on Stop-Check Valve .3928 Type IV Bonnet on Piston-LiftCheck Valve .41Pressure-seal Valve Figure 75957595YThis manual has been prepared toserve as a guide for the maintenanceof Edward valves of the pressure-sealbonnet joint construction. It isdesigned to help you obtain the mostsatisfactory service from these valves.Although rigid metallurgical, radiographic, physical, and visual inspection is the standard procedure for allEdward products, it is inevitable thatsome valves, after a period of time,may occasionally require repair.When this happens, this manual willassist you so that your valve may besatisfactorily restored to good working condition with a minimum of timeand expense.ScopeBefore starting, it will be helpful tohave some understanding of thevalve’s physical construction. Consequently, the four basic types ofpressure-seal constructions are discussed and illustrated first. All Edwardpressure-seal valves employ one ofthese four basic types, or a minormodification thereof. Non-pressureseal, or bolted bonnet type valves,are not included in this manual.The next major section of this manualdiscusses the more common serviceproblems and failures. It identifies theproblem and explains the reasons forcertain failures. The reason shouldbe understood before work isactually started.3

Flow Control DivisionEdward ValvesDescription of Pressure-Seal Bonnet Types – Type IThe procedure to be followed in makingthe repair is then explained. This includesnormal valve maintenance as well as majorvalve repair. Field repair equipment, available from Edward, is described andillustrated. Valve lubrication and weldingrod recommendations are also made.These procedures are adequate for almostany pressure-seal valve repair or maintenance problem that may arise in the field.Following is the section describing thedisassembly procedure for the variousvalve components; for example, manual ofLimitorque operators, valve yokes, and thefour basic bonnet types. It is very important that the Introduction and the paragraphs titled “First Determine the Area ofFailure” be read and understood beforeany disassembly work is begun. Severalprocedures are described, depending uponthe area of failure. Considerable time canoften be saved by first selecting the properdisassembly procedure.The last major section explains how thevarious valve constructions are to bereassembled. Information on how tocontact Edward for additional advice, ifrequired, and how to order parts isincluded.Description ofPressure-Seal Valve TypesEdward pressure-seal valves are built withfour basic bonnet arrangements to providethe most suitable designs for the widerange of sizes and pressure classesoffered.Type I is the studded bonnet design asshown. It uses the basic pull-up constructionwith studs in the bonnet projecting throughthe retainer for tightening by use of nuts. Itis a simplified design employed in moderate pressure applications and certain valvesizes, as shown in the following table.Illustration No. 1Pressure-Seal BonnetType IFig. No.Type IType of ValveSize602YPressure Rating600Flite-Flow Globe Stop-Check (Y-Type)6-20606 and 606Y600Globe Stop-Check8-14607 and 607Y600Angle Stop-Check8-14614Y600Flite-Flow Globe Stop (Y-Type)6-20616 and 616Y600Globe Stop8-14617 and 617Y600Angle Stop692Y600Flite-Flow Check (Y-Type)8-14694 and 694Y600Horizontal Check8-14695 and 695Y600Angle Check8-1416-20702Y600-SPLFlite-Flow Globe Stop-Check (Y-Type)714Y600-SPLFlite-Flow Globe Stop (Y-Type)16-20792Y600-SPLFlite-Flow Check (Y-Type)16-201602YSpecialFlite-Flow Globe Stop-Check (Y-Type)16-201614YSpecialFlite-Flow Check Stop (Y-Type)16-201692YSpecialFlite-Flow Check (Y-Type)16-201802YSpecialFlite-Flow Globe Stop-Check (Y-Type)16-201814YSpecialFlite-Flow Globe Stop (Y-Type)16-201892YSpecialFlite-Flow Check (Y-Type)16-206-204

Flow Control DivisionEdward ValvesDescription of Pressure-Seal Bonnet Types – Type IIType IIFig. No.2002Y2006Y2007Y2014Y2016Y2017Y3902Y3906 and3907 and3914Y3916 and3917 and3948Y4002Y4006 and4007 and4014Y4016 and4017 14Y4416Y4417Y4448Y4502Y4514Y4592Y7502Y7506 and7507 and7514Y7516 and7517 andPressure 2500-SPL450045004500150015001500150015001500Type of ValveFlite-Flow Globe Stop-Check (Y-Type)Globe Stop-CheckAngle Stop-CheckFlite-Flow Globe Stop (Y-Type)Globe StopAngle StopFlite-Flow Globe Stop-Check (Y-Type)Globe Stop-CheckAngle Stop-CheckFlite-Flow Globe Stop (Y-Type)Globe Stop-CheckAngle Stop-CheckElbow Down Stop-CheckFlite-Flow Globe Stop (Y-Type)Globe Stop-CheckAngle Stop-CheckFlite-Flow Globe Stop (Y-Type)Globe StopAngle StopFlite-Flow Globe Stop-Check (Y-Type)Globe Stop-CheckAngle Stop-CheckFlite-Flow Globe Stop (Y-Type)Globe StopAngle StopFlite-Flow Globe Stop-Check (Y-Type)Globe Stop-CheckAngle Stop-CheckFlite-Flow Globe Stop (Y-Type)Globe StopAngle StopElbow Down Stop-CheckFlite-Flow Globe Stop-Check (Y-Type)Flite-Flow Stop (Y-Type)Flite-Flow Check (Y-Type)Flite-Flow Globe Stop-Check (Y-Type)Globe Stop-CheckAngle Stop-CheckFlite-Flow Globe Stop (Y-Type)Globe StopAngle StopSize3–42-1/2 – 42-1/2 – 43–42-1/2 – 42-1/2 – 43-242-1/2 – 122-1/2 – 223-242-1/2 – 122-1/2 – 2210-163–42-1/2 – 42-1/2 – 43–42-1/2 – 42-1/2 – 43–42-1/2 – 42-1/2 – 43–42-1/2 – 42-1/2 – 43-242-1/2 – 122-1/2 – 223-242-1/2 – 122-1/2 – 2210-168-108-108-103–42-1/2 – 42-1/2 – 43–42-1/2 – 42-1/2 – 4Type II is the push-up design in which thebonnet retainer ring is screwed onto thebonnet, and cap screws develop theupward force. This design is employed onboth intermediate and high-pressure applications. A three-piece construction is usedfor the pressure-seal parts.Type IIIllustration No. 2Pressure-Seal Bonnet5

Flow Control DivisionDescription of Pressure-Seal Bonnet Types – Type IIIType III also uses the three-piece pressureseal construction but combines it with thebasic pull-up bonnet. This design is utilizedextensively in the larger valves.Type IIIIllustration No. 3Pressure-Seal BonnetEdward ValvesType IIIFig. 16Y2017Y2070Y2092Y2094Y2095Y2570Y3992Y3994 and3995 and4006 and4007 and4014Y4016 andPressure 500250025002500900900900900Type of ValveFlite-Flow Stop-Check (Y-Type)Angle Stop-CheckFlite-Flow Globe Stop (Y-Type)Angle StopFlite-Flow Check (Y-Type)Angle CheckFlite-Flow Globe Stop-Check (Y-Type)Flite-Flow Globe Stop (Y-Type)Flite-Flow Check (Y-Type)Tilting Disk CheckTilting Disk CheckFlite-Flow Globe Stop-Check (Y-Type)Flite-Flow Globe Stop (Y-Type)Flite-Flow Check (Y-Type)Flite-Flow Globe Stop-Check (Y-Type)Flite-Flow Globe Stop (Y-Type)Flite-Flow Check (Y-Type)Flite-Flow Globe Stop-Check (Y-Type)Globe Stop-CheckAngle Stop-CheckFlite-Flow GlobeGlobe StopAngle StopTilting Disk CheckFlite-Flow Check (Y-Type)Horizontal CheckAngle CheckTilting Disk CheckFlite-Flow Check (Y-Type)Horizontal CheckAngle CheckGlobe Stop-CheckAngle Stop-CheckFlite-Flow Stop (Y-Type)Globe -322-1/2 – 185-145-243-243-182-1/2 – 142-1/2 – 243-243-242-1/2 – 122-1/2 – 245-145-246-165-146