Trueline Distribution Fig.652 Manuale di istruzioni

Fig.652 Installation & Maintenance Manual

Trueline Distribution

20201 Clark Graham, Baie D’Urfé,

H9X 3T5 CANADA

P. : (514) 457-5777 T.F. : (800) 667-4819

F. : (514) 457-1348

General Information:

•Toprovideanoptimumservicelife,thevalveshouldbeoperatedonlyinitsfully

openorfullycloseposition.Ifthevalveisusedinpartlyopen(throttled)

position,seatlifemaybereduced.

•Extendingthehandleleverisconsideredmisuseandcandamagethevalveor

causeinjuries.

•Thevalvebodyratingcanbehigherthantheseatrating.

•Highviscousorabrasivemedia,frequentoperationandtemperature

fluctuationscouldcauseanincreaseinvalvetorque.

•Valvepressurevariesunderdifferentmodels,sizes,workingtemperaturesand

materials.Pleaseverifytheapplicationwithinthelimitsspecifiedhereinandas

describedonmetalplatespotweldedonvalvebody.Referencescontainedin

thisdocumentstothe‘PED”areinregardstoEuropeanPressureEquipment

Directive97/23EC.

•AlwaysuseTruelinerecommendedsparepartsformaintenanceand

replacement.

Shipping and Storage:

Allvalvesarepackedinstrongcardboardsandplasticbagstoavoidanypossible

damageduringtransportation.Allthevalvesmustbeexaminedonreception,toensure

thattheyhavenotsufferedanydamagesduringtransport,andthesuppliermustbe

informedofanydamagesobserved.Iftheitemsarenotforimmediateuse,please

followthefollowinginstructions:

1. Leavethevalvesinfullyopenposition.Neverleavethevalveinapartiallyopen

position.

2. Alwayskeeptheprotectivecoversinplaceuntilthevalveisreadyfor

installation.

3. Thevalvesshouldnotbeunpackeduntiltheyaretobedefinitivelyinstalled,

exceptforpurposeofinspection.Afterinspectiontheywillbepackedagain.

4. Thevalvesshouldbestoredundercoverandprotectedfromsevereweather

conditionsandforeignbodies.

5. Stainlesssteelballvalvesdonotneedanyadditionalprotectioncoatingsonce

theyareinstalled.

6. ValvestobestoredforalongperiodoftimeshouldbeinspectedbyQC

personneleverysixmonthsandeverythreemonthsforautomatedvalves.

Fig.652 Installation & Maintenance Manual

Trueline Distribution

20201 Clark Graham, Baie D’Urfé,

H9X 3T5 CANADA

P. : (514) 457-5777 T.F. : (800) 667-4819

F. : (514) 457-1348

General Installation Step:

Thehandlingandtransportingofthevalvesmustbecarriedoutwithextreme

precautionandusingthenecessary&adequatemeansonthebasisoftheirsizeand

weight,avoidinganyriskstothepersonthathandlethem.

1. Valvepressurevariesunderdifferentvalveseries,sizes,applicationtemperature

andthematerialofthemainparts.Pleaseverifytheapplicationwithinthelimits

andasdescribedonthevalvebody.

2. Priortoinstallation,pleasemakesurethevalveisfreefromdirtandother

foreignmaterialsthatcoulddamagethevalveseats,asthesepartsare

fundamentaltothecorrectoperationofthevalve.

3. Itmightbenecessarytoflushtheballvalve,valvecavityandthepipestoremove

theaccumulateddirtandburrs.

4. Valvesshouldbeoperatedforatleasttwocompletecyclesbeforethe

installationtothepipe.Allthemultiportballvalveshaveavisualindicator

engravedonthevalvestem.Makesurethevalveportconfigurationcomplywith

theflowarrangementofthepipe.

5. Useanypipesealantsuitableforthematerialandtheprocessthatthevalveis

installedin.Don’tusethesealanttooexcessivelytoavoidtheobstructionin

valveoperation.

6. Alwaysleaktestthesystembeforeusing.

Installation Step for Screwed End:

1. Keepthevalveinopenposition.

2. Checkthevalvethreadsandthethreadsoftheconnectingpipeandmakesure

thesearefreefromdirt,gritorburrs.

3. Useananti‐seizethreadsealanttosealandpreventgalling.Taperthreaded

fittingsshouldnotbeovertightened.

4. Whentighteningvalve,useawrenchontheendnearesttothepipe.

Installation Step for SW/BW End:

1. Tackweldthevalve(inopenposition)endcapstothepipesatthreepoints.

2. Loosen&separatetheendcapsfromthebody.Removetheseatandsealand

setasideinthecleanandsecuredareaforreassemblylater.

3. Weldcompletelytheendcapstothepipes.Allowenoughtimeforcoolingthe

weldedjoints.Removetheremnantfromtheendcapsandpipes.

4. Putbacktheseatsandreassembletheendcapstothebodyaccordingtothe

BoltTorqueSpecifications.

Fig.652 Installation & Maintenance Manual

Trueline Distribution

20201 Clark Graham, Baie D’Urfé,

H9X 3T5 CANADA

P. : (514) 457-5777 T.F. : (800) 667-4819

F. : (514) 457-1348

Preventive Maintenance:

Preventivemaintenanceoperationsessentiallyconsistofperiodicinspectionsto

ensurethatthevalveisworkingproperly.



1. Thevalvemustbeopenedandclosedatleastonceeverysixmonths.Theuser

willberesponsibleforestablishingopeningandclosingplansthatareadequate

fortheworkingconditionsandfluidsused.

2. Beforemakingthemaintenance,alwaysmakesurethepressureisreleasedand

thelinehasbeenclosed.

3. Wearprotectiveclothingadequateforthecirculatingfluid.(Complywiththe

safetyguidelineslaiddownbythecompany).

4. Ifleakagehappensatthestem,tightenthestemnutaquarterturnasaroutine

maintenanceprocedure.Thiswillcompensateforanywearingorsettlingofthe

glandpacking.

5. Don’tovertightenthestemnut.Itwillcauseinexcessiveoperatingtorqueand

shortenthelifeofthepackingservice.Ifleakagepersists,depressurizethevalve

andreplacethestempacking.

6. Ifleakageisdetectedinthebodyseal,tightenthebodyconnectorbolts.Ifthe

leakagestilloccurs,thiswillbeduetothedamagedseal.Thevalveneedstobe

dismantledforrepairs.

Disassembly:

1. Makesuretheinstallationisnotunderpressure.

2. Loosenallbodyboltsorscrewsandremovethebodyfromtheline.Ifthe

circulatingfluidisnoxiousorinflammableprecautionsmustbetakentoavoid

accidents.

3. Removeanddiscardtheseatsandbodyseals.Removetheballandcheckthe

exteriorsurfaceoftheball,particularlytheareaincontactwiththeseatandthe

radiusortransitionbetweentheexteriorsurfaceandthebore.Iftheball’s

surfaceisdamagedreplaceitwithanewone.

4. Removethehandlesubassembly(handlenut,handle,stemnut,tabwasher,and

glandbushing).Placeallcomponentsincleanandsecuredarea.

5. Pushdownthestemintostuffingboxanddiscardthestempacking,O‐Ring,

thrustwasher.Becarefulnottoscratchornickthestempackingareaofthe

stuffingboxarea.

Fig.652 Installation & Maintenance Manual

Trueline Distribution

20201 Clark Graham, Baie D’Urfé,

H9X 3T5 CANADA

P. : (514) 457-5777 T.F. : (800) 667-4819

F. : (514) 457-1348

Assembly:

1. Cleaneachcomponentwithacleancloth.

2. Lubricatethethrustwasherandstempacking.Insertthestemintothestemport

ofthevalvebody.Placethethreadedendperpendiculartocenterlineofthe

body.

3. Holdthestemupandinsertthethrustwasher,O‐Ring,Stempacking,gland

packing,tabwasherandgland(stem)nut.

4. Tightenthestemnutaccordingtothetorquespecificationstatedinthismanual.

5. Inserttabwasher,handleandhandlenut.Tightenthehandlenut.

6. Bringthehandletoclosepositionandinserttheballandmakesureitengages

withthestem.

7. Movethehandleinopenpositiontopreventballfromfallingout.

8. Placetheballseatandbodysealintothebodyandinstallthebodyboltsand

nuts.Tightenthebodyboltsaccordingtothetorquespecifications.

9. Cyclethevalveseveraltimestoverifythefreeoperationofthevalve.

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