Flowserve Tandem Seal Manuale Utente Scaricare il pdf (Pagina 3)

1.7 Check gland pilot and bolt holestoensuretheyareadaptabletothe

equipmentandarethesameasshownontheassemblydrawing.

1.8 Handle all seal parts with care,theyaremanufacturedtoprecisetolerances.

Thesealfaces;PartNo.3,SealRing,andPartNo.2,Insert,areofspecial

importance.Thesetwosealingfacesarelappedattothreelightbands(34.8

millionthsofaninch).Keep the seal faces perfectly clean at all times.

2 Tandem Seal Installation

2.1 AllTandemSealtypesareacombinationoftwosingleseals.SeeFig.2.

VariouscombinationsofsealtypesmaybeusedtocompriseaFlowserve

Tandem.Othervariationsmayincludechangeinshaftpackingmaterials

andthetypeofmountingforthestationaryinserts.

2.2 ScribeamarkAonthe

 shaftorshaftsleeve

 exactlyushwiththe

 faceofthesealchamber.

 Thiswillbethe“reference

 mark”forsettingtheseal

 tothesealassembly

 drawing.SeeFig.1.

2.3 Refertotheassembly

 drawingprovidedwith

 thesealforcollar

 dimensionsettings

 showninabox.

 ScribemarksBandCto

 locatetheinneredgeofthe

 drivecollars5fortheouter

 andinnerseals.SeeFig.1.

2.4 Carefullyplacetheglandring1andtheouterstationaryinsert2Aover

theshaft.Donotbumpcarbonpartsagainsttheshaftastheymaychip,

crackorbreak.

Note: Iftherotaryunitsandshaftpackingsfortheinnerandoutersealsareto 

 beassembledonashaftsleeve,proceedasfollows:

2.5 PlacetheinsertholderIHovertheshaftandintoitsproperpositioninthe

glandringasshownonthesealassemblydrawing.

2.6. Lubricatethesleevelightlywithsiliconelubricantbeforeinstallinganyofthe

rotaryunitparts.

External Sealing Liquid Inlet

Typical Tandem Dura SealFigure2

External Sealing Liquid Outlet

Bypass Flush

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Flowserve Tandem Seal Manuale Utente Pagina 3