b'LINED BUTTERFLY VALVEMODEL 2014-HP - HU-1 / 2016-HPSEAL CONSTRUCTION & FEATURES - PINLESS DESIGNShaftweathersealISO 5211 Actuator flangeaccommodates Strong precision key all types of operators:gives positivehandle, gear, electricattachmentfor andpneumaticmanualleveror actuators. actuator (Square or Double D).Pressure surge seals* aremoulded integrally insideLuberizedbushingsgivethe seat shaft holestemsupportat area.These ringsactuatormountingandbelowdiscareimmediatelyoutwardmateriallycompatible of seat.withtheseatto provide failsafe sealing aroundstem, eliminating possible leakage.The phenolic backed* seat is non-collapsible, stretch resistant andValvesavailablewithblowoutproof.Easily bothwaferandlugfieldreplaceable. type bodies.Fully lined body in a broad range ofmaterials-includingPolisheddiscflats Teflon.matewithseatflatstogiveahighlyefficientseal: prevents leakage intothestemarea. Pinless design disc.Precisionprofiledisc Alignmentfeaturesallowprovides bubble-tighteasyinstallationbetweenshutoffwithminimal pipelineflanges;areal disc/seat interference,installation cost saver. assuringminimum (Body style 2014A, 2016)torque and longer seat lift.Supportedstemsealprotects against distortion,acommon O-Ring preventscauseofstemleakagefromstem.leakage.The disc is precisionPinless DiscSUPERSEALCONSTRUCTIONmanufacturedtoclose Themodernseatanddisc The superseal seat design* has a Precisionmachineddiscedgeandshaftflats.tolerances on the O.D.design insures positive sealingmuchsmallermassofelastomer Bonded distortion proof seat, close andtheflats.Seating whilemaintaininglowseating whichcanswell,inturntorque tolerances.edge is a polished halftorque. The superseal designis controlled to a reasonablePositive shaft seals.ball for torque control.extendsseatlifebyeliminating degree. The 21 bar rated valve any bunching or tearing. has a bonded hard lined backing.Lowpotentialofseatswell.The disc is pinless design.Controlled torque by design superiority.TRADITIONAL CONSTRUCTIONThe conventional discThe conventional design reliesElastomersaresubjecttoswellingNon-precisiondiscdimensions.has been sanded toon distortion and bunching offromfluidabsorptionwhichcan Seat distorts during installation and removerougharea,the seat to achieve a bubble tightincreasethemassoftheseat.operation.precisedimensionsare shutoff.Seat life is decreasedThis increase can and often doesShorter seat life.notmaintained. causinghighermaintenancecost causeexcessivelyhighseating Higher torque due to bunching and andincreaseddowntime. torque. Seat life is shortened. potentialswelling.*Design varies according to size, rating and material specifications.28 SUPERSEAL - Butterfly Valves'