b'GLOBE VALVES - BONNETLESS Y-STYLEBONNETLESS Y-PATTERN GLOBE VALVESSW, NPT, BW 800 TO 2690 CLASSBONNETLESS GLOBE VALVESOne-piece,forged,bonnetlessglobevalveshavebeenprovenincriticalserviceapplicationsaroundtheworld.Thisincludeshighpressuredrop,steamblowdown,steaminjectionetc. Thesefastactingisolationvalvesareratedupto2690Class andcanbeutilisedingasandsuperheatedsteamat upto1100F(593C)DESIGN FEATURESOne piece forged bodyEliminatespressureretainingthreadsorboltsNoweldstocutforservicingEliminatesdepositsY Pattern forged bodyExcellentflowcharacteristicsAllowsstreamlinedflowEliminatescorrosionanddeposits60inclinepressuredropHeavy integral seating IntegralStellite#6seat&discforlonglife TightshutoffLongvalvelifeGoodflowcharacteristics.Easeofre-facingPositiveseatingfunctionasstandardSeatisguidedatbottomandtopNon-rotating splined stem Double packing and leak-offNon-rotatingsolidconeeliminatesgallingandAlanternringandleak-offpipeoptioneliminatesscoringorbendingofthestem allowsdetectionordrainingofleakage,ifany,Notorsionappliedtoglandpacking fromthelowerpackingset.EasyonsitemaintenanceandlowmaintenancecostLowoperationaltorque Short and narrow packing chamberCannotbedetachedfromthestem SealingeffectivenessimprovesasCloseroundnessandstraightnesstolerances overallpackinglengthshortens.ChamberwallBurnishedforsuperiorfinish isburnishedtoasuperiorfinishCombination gland ring packing Handle wheelGraphoilasstandardmaximumtemperatureImpactHand-wheelisnotnecessarythanks650degreeC. tothetworollerbearings.LongoperatinglifeUnique, fully-enclosed stem nutdriveHeavy two-piece gland bushings Welllubricatedstemnutrotatesontwo Willwithstandhighstressescausedbyliveloading thrustbearingsBolttorquescontroltotalspringload 10,000testcyclesshownovisibledamage TwosetsofGLANDBUSHINGSmaintainaminimumto partspermanentstressof4000psionthegraphitepackingDustcoverandsleeveprotectstemthreadskeepingittightforlongperiodsoftimewithoutfromdirt,dustandsand.maintenance.26 AUSTRALIAN PIPELINE VALVE'