TheHighPerformanceCompany

McCannalokHIGH PERFORMANCE BUTTERFLY VALVE

OPERATION AND MAINTENANCE MANUAL

Table of Contents

Safety Information - Definition of Terms ...................................................................................... 1

Introduction ........................................................................................................................................ 1

Installation ......................................................................................................................................... 1

Maintenance ................................................................................................................................. 2

Stem Seal Replacement ............................................................................................................... 4

Seat Replacement ......................................................................................................................... 4

Disc and Stem Replacement ........................................................................................................ 5

Parts Diagram ...................................................................................................................................... 7

Special Instructions - Fire Safe Bray/McCannalok Installation ............................................ 8

Seat Replacement ......................................................................................................................... 8

Stem Seal Replacement ............................................................................................................... 8

Stem and Disc Replacement ........................................................................................................ 9

Field Adjustments ............................................................................................................................... 9

1

Bray/McCannalok Operations and Maintenance Instructions

Features Include:

• Bubbletightshutoffprovidedthroughoutawiderangeofoperatingconditions.

• Suitableforbothmodulatingandon/offservices,theBray/McCannalokbutterflyvalveiseasilyautomatedwithyour choiceofmanualoperators, electric andpneumaticactuators,positioners,andcontrols.

• TheBray/McCannalokisavailableinaFireSafemodelqualifiedtoAPI6075thEditionandBS6755part2.

Additional information about Bray/McCannalok butterfly valves – including application data, engineering specifications, and actuator selection is available from your Bray distributor or sales representative.

InstallationSpecialinstructionsforFireSafevalvesappearonpage 8.1. TheBray/McCannalokvalveisdesignedtobemounted

betweenANSIflanges.Whenthevalveisopen,thediscwillextendintothepipeonbothsidesofthevalve–furtheronthebodysidethantheseatretainersideofthevalve.Pipingmustbelargeenoughtoallowthedisctoclearthepipe.Thechartsonpage 2showtheminimumpipeIDallowable,andstandardpipeIDs.Ingeneral,Class150valveswillclearSchedule40pipe,andClass300valveswillclearSchedule80pipeadequately.Class600willingeneralclearSchedule80sizes3,4,and6;andSchedule100insizes8,10,12,14,and16.

CAUTION

2. Ifhandleoractuatorhasbeenremoveddonotrotatediscbeyondfullopenorclosedposition–thiscouldcausedamagetosealingsurfaces.

NOTE:Bray/McCannalokvalvesareequippedwithtravellimiterstopreventoverclosure.Thevalveisopenedbyturningcounterclockwise,closedbyturningclockwise.Thedouble“D”flatsorkeywayatthetopofthestemisparalleltothediscedge.

NOTICE

3. Formaximumservicelife,installthevalvewiththeseatretainerupstream.

Positiveshutoffwillbeobtainedwiththevalveineitherposition;however,installationwiththeseatretainerupstreamwillgivelongerservicelife,especiallyinerosiveservices.

4. Withthediscinclosedposition,carefullycentervalvebetweenflanges.Guideholes(waferpatternvalve)ortappedholes(luggedvalves)tomatchANSIPipeflangesandassistinpositivealignment.

5. Use standard torques when bolting valve into theline.Theseatissufficientlycompressedbytheseatretainer,andadditionalforcefromflangeboltingisnotrequired.

Introduction

TheBray/McCannalokhigh-performancebutterflyvalvecombinestheadvantagesoftrunnion-typeballvalveswiththeeasyoperation,lightweight,andlowcostofbutterflyvalves.Onebasicdesignissuitableforawiderangeofservices,includingoxygen,chlorine,sourgas,vacuum,andsteamapplications.

Safety InformatIon - DefInItIon of termS

WARNING indicatesapotentiallyhazardoussituationwhich,ifnotavoided,couldresultindeathorseriousinjury.

CAUTION indicatesapotentiallyhazardoussituationwhich,ifnotavoided,mayresultinminorormoderateinjury.

NOTICE usedwithoutthesafetyalertsymbolindicatesapotentialsituationwhich,ifnotavoided,mayresultinanundesirableresultorstate,includingpropertydamage.

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2

Bray/McCannalok Operations and Maintenance Instructions

6. GasketsshouldconformtotherequirementsofAPIStandard601,Edition3forASME/ANSIB16.5classflanges.Spiralwoundgaskets,suchasFlexitallicCGor CGl series, conforming toASME/ANSIB16.20areacceptable.

Maintenance1. Reasonableprecautionsshouldbetakenbeforebegin-

ningworkonthevalve.Protectiveclothing,asrequiredbythespecificlinefluid,shouldbeworn.

WARNING

2. Beforeremovinghandleortheactuatorfromthevalve,orbeforeremovingseatretainerfromavalveindeadendservice,closethevalveanddepressurizetheline.

Theeccentricdesignof theBray/McCannalokmayallow linepressure toopen thevalve if thehandle/actuatorisnotinplacewhilethevalveisunderpressure.

WARNING

Do not pressurize the line without a handle oractuatoronthevalve.

3. The Bray/McCannalok valvemust be in the closedpositiontoberemovedfromtheline.

4. Beginallworkonavalvethathasbeenremovedfromthelinebycleaningthevalve,removinganygritorscale.

NOMINAL INSIDE DIAMETER OF PIPEValve Size Schedule

40 80 100Ins(mm)2.5 2.469 2.323(65) (62.713) (59.004)3 3.068 2.900

(80) (77.927) (73.660)4 4.026 3.826

(100) (102.260) (97.180)5 5.047 4.813

(125) (128.194) (122.250)6 6.065 5.761

(150) (154.051) (146.329)8 7.981 7.625 7.439

(200) (202.717) (193.675) (188.951)10 10.020 9.564 9.314

(250) (254.508) (242.926) (236.576)12 11.938 11.376 11.064

(300) (303.225) (288.950) (281.026)14 13.124 12.500 12.126

(350) (333.350) (317.500) (308.000)16 15.000 14.314 13.938

(400) (381.000) (363.576) (354.025)18 16.876 16.126

(450) (428.650) (409.600)20 18.814 17.938

(500) (477.876) (455.625)24 22.626 21.564

(600) (574.700) (547.726)

MINIMUM INSIDE DIAMETER OF PIPE WITH THE RECOMMENDED CLEARANCE

Valve Size Class

150 300 600Ins(mm)2.5 2.28 2.28(65) (57.91) (57.91)3 2.86 2.86 2.75

(80) (72.64) (72.64) (69.85)4 3.72 3.72 3.56

(100) (94.49) (94.49) (90.42)5 4.80 4.80

(125) (121.92) (121.92)6 5.88 5.75 5.38

(150) (149.35) (146.05) (136.65)8 7.80 7.56 6.88

(200) (198.12) (192.02) (174.75)10 9.78 9.44 8.50

(250) (248.41) (239.78) (215.90)12 11.74 11.31 10.12

(300) (298.20) (287.27) (257.05)14 12.90 11.38 10.88

(350) (327.66) (289.05) (276.35)16 14.68 14.31 12.62

(400) (372.87) (363.47) (320.55)18 14.40

(450) (365.76)20 15.86

(500) (402.84)24 22.50 20.68

(600) (571.50) (525.27)30 28.55 27.06

(750) (725.17) (687.32)32 30.69

(800) (779.53)36 34.50 33.63

(900) (876.30) (854.20)40 37.55 36.59

(1000) (953.77) (929.39)42 39.55 38.67

(1050) (1004.57) (982.22)44 38.67

(1100) (982.22)48 51.09 45.13

(1200) (1297.69) (1146.30)54 52.95

(1350) (1344.93)60 58.25

(1500) (1479.55)

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Bray/McCannalok Operations and Maintenance Instructions

CAUTION

Whenhandlingthevalve,careshouldbetakennottoscratchthediscedgeorseat.

6. Replacementseats,sealsandotherpartsareavailablefromauthorizeddistributors.Contactyourdistributororsalesrepresentativefordetailsofpriceanddelivery.

NOTES:1. MinimumI.D.ofpipewithrecommendedclearances(per

API609)havebeencalculatedbyaddingtheminimumI.D.withzeroclearancetoaminimumrecommendeddiametricclearanceforeachpipesize.

2. Thesechartsassumethatthepipeisonthebodysideofthevalveandthatthepipeisperfectlycentered.Theseatretainersideofthevalvewillalwayshavemoreclearancethanthebodyside.

3. Aminimumof1/16”thickgasketisusedbetweenthepipeflangeandvalvebodyface.

4. When using a pipe whose I.D. is smaller than therecommendedminimuminsidediameterofpipewithadequateclearance,achamferof45°shouldbepro-videdontheendofthepipesothatitclearsthedisc.

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Bray/McCannalok Operations and Maintenance Instructions

TABLE 1 TOTAL NUMBER OF STEM SEALS

Valve Size Class

150Material CF / TFE

Class 300

Material CF/TFE

Class 600

Material CF / TFE

Ins (mm)2.5 (65) 4 1/3 4 1/33 (80) 4 1/3 4 1/3 12 2/104 (100) 4 1/3 4 1/3 12 2/105 (125) 4 1/3 4 1/36 (150) 4 1/3 4 1/3 16 2/148 (200) 5 1/4 5 1/4 16 2/1410 (250) 5 1/4 5 1/4 18 0/1812 (300) 5 1/4 5 1/4 18 0/1814 (350) 6 0/6 6 0/6 18 0/1816 (400) 6 0/6 9 0/9 16 0/1618 (450) 16 0/1620 (500) 16 0/1624 (600) 10 0/10 8 0/830 (750) 8 0/8 9 0/932 (800) 8 0/836 (900) 8 0/8 9 0/940 (1000) 9 0/9 9 0/942 (1050) 9 0/9 9 0/944 (1100) 9 0/948 (1200) 9 0/9 9 0/954 (1350) 9 0/960 (1500) 9 0/9

CF=CarbonFiber

Stem Seal ReplacementRefertodrawingonpage 7forpartsidentification1. Ifrequired,removehandleassembly.Removesockethead

capscrews(21)andlockwashers(22).Removemountingbracket(20).Foractuatedvalves,unboltmountingbracketfrombodyandliftactuatorassemblyoffstem.

NOTICE

Noteassemblypositionsbeforeremoval.

2. Removeglandretainernuts(14)andlockwashers(13).Removeglandretainer(11)anti-blowoutretainingringorsplitring(10)(dependingonsize),andglandring(7).

3. Hookoutstemseals(8).

CAUTION

Whenhandlingstemseals,careshouldbetakennottoscratchstemorstuffingboxbore.Do not remove thrust washer (9), unless further valvedisassemblyisrequired.

4. Examinestuffingboxboreandstem,cleanasnecessarytoremoveanycorrosionorforeignmatterbeforeinstall-ingnewseals.

5. Installnewsealsinstuffingboxoneatatime,TFE(white)sealsfirst,withthecarbonfiberringatthetop.Staggerseal

ringjoints180°apartwheninstalling.Tampeachringtobottombeforeinstallingnextring.

NOTICE

Onthelargervalvesitwillbenecessarytocompresseachsealbeforeaddingthenext.

6. Slideglandring(7)overstemontopofseals(8).Installanti-blowoutretainingringorsplitring(10)(dependingonvalvesize).Slideglandretainer(11)overstemandontoglandstuds(12).Placelockwashers(13)andhexnuts(14)onstuds(12)andtightenfingertight.Tightenglandnuts(14)evenlyandalternatelytothepropertorquevaluegiveninTable 2 (pg. 5).

7. Remount actuator, ormounting bracket (20)with lockwashers(22)andcapscrews(21)andhandleassembly.

8. Operatevalveopenandclosedseveraltimestocheckforbindingandtosetthestemseals.Loosenglandnuts(14)andretightentotorquevaluegiveninTable 2 (pg. 5).

Seat ReplacementRefertodrawingonpage 7forpartsidentification.Withthediscintheclosedposition,removethevalvefromtheline.1. Laythevalvedownwiththediscintheclosedposition

andtheseatretainersidefacingup.2. Removethesocketheadcapscrews(17),theseatretainer

(16),andseat(15).3. Carefullycleantheseatareainthebodyandseat

retainer.Removeforeignmatter,dirt,etc.Checkdiscseatingareafornicksorscratches.

4. Place the new seat (15) on disc (2), carefullycenteringitintherecessinthebody.

5. Align theholes in the seat retainer (16)withmatchingholesinbodyandcarefullyplaceinpositionontopofseat(15).

CAUTION

Donotshifttheretainerinordertoalignholes.Itmayshifttheseatfromitscorrectposition.

Lightlygreasecapscrew(17)threadsandtightendown evenly, alternating from top to bottomandsidetoside.TightentothetorquevaluesinTable 2 (pg. 5).

6. Operate valve several times and examine seatforanydamagebeforereinstallingthevalveintheline.

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5

Bray/McCannalok Operations and Maintenance Instructions

Disc and Stem ReplacementRefertodrawingonpage 7 forpartsidentification.

NOTICE

Stemanddiscaresuppliedasamatchedsetwithtaperpinsandaretobereplacedasaset.

1. Forhandle-operatedvalvesremovehandleassembly.Removesocketheadcapscrews(21)andlockwashers(22).Removemountingbracket(20).Foractuatedvalves,unboltmountingbracketfrombodyandliftactuatorassemblyoffstem.

NOTICE

Noteassemblypositionsbeforeremoval.

2. Removeglandretainernuts(14)andlockwashers(13).Removeglandretainer(11),anti-blowoutre-tainingringorsplitring(10)(dependingonvalvesize),andglandring(7).

3. Hookoutstemseals(8).

CAUTION

Takecarenottoscratchstemorstuffingboxbore.

4. Removelocatingplug(19)andgasket(18).5. Removecapscrews(17),seatretainer(16),and

seat(15).6. Turndisctothefullopenpositionanddrillouttack

weldsonlargeendoftaperpins(4).

CAUTION

Takecaretosupportvalvesothatdiscsurfacesarenotscratched.

DrillsizestoremovetackweldsasgiveninTable 3 on page 6.Usecenter-punchtodimplecenteroftackweldspriortodrilling.

7. Placevalveinflatposition,withflatfaceofdiscup.Supportdiscandbodyonwoodenblockstoprotectdisc and body surfaces.Discwill rest in partiallyopenposition.

8. Knockouttaperpins(4)usingarodorpunchonsmallendofpin(oppositetackweld).Itmaybenecessary

TABLE 2GLAND RETAINER NUT AND SEAT RETAINER SCREW TORQUES. - In-lbf (N•m)

Valve Size

Gland Nut Seat Retainer Screws

150 300 600 150 300 600Ins(mm)2.5 60 60 100 100(65) (7) (7) (11) (11)3 60 60 80 100 100 100

(80) (7) (7) (9) (11) (11) (11)4 60 60 100 175 175 175

(100) (7) (7) (11) (20) (20) (20)5 80 100 100 175

(125) (9) (11) (11) (20)6 80 120 140 100 175 300

(150) (9) (14) (16) (11) (20) (34)8 80 140 200 175 175 300

(200) (9) (16) (23) (20) (20) (34)10 110 190 200 175 300 300

(250) (12) (21) (23) (20) (34) (34)12 130 220 200 300 300 300

(300) (15) (25) (23) (34) (34) (34)14 130 200 240 300 300 500

(350) (15) (23) (27) (34) (34) (56)16 150 220 240 300 300 750

(400) (17) (25) (27) (34) (34) (85)18 400 1500

(450) (45) (169)20 480 1500

(500) (54) (169)24 190 240 500 500

(600) (21) (27) (56) (56)30 210 310 500 750

(750) (24) (35) (56) (85)32 210 750

(800) (24) (85)36 240 360 500 1500

(900) (27) (41) (56) (169)40 280 420 500 1500

(1000) (32) (47) (56) (169)42 280 420 500 1500

(1050) (32) (47) (56) (169)44 420 1500

(1100) (47) (169)48 300 600 750 1500

(1200) (34) (68) (85) (169)54 360 1500

(1350) (41) (169)60 500 1500

(1500) (56) (169)

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6

Bray/McCannalok Operations and Maintenance Instructions

toliftbodyandrotatediscslightlytodothis.Makesurediscisrestingonwoodblocksinceitwillswingfreelyonstemwithpinsremoved.Whenpins(4)areout,laybodydownsodiscandbodyareevenlysup-portedonflatsurface.

9. Usingabrassbarordriftpunch,knockstem(3)looseandpullfrombody.Afterlongorsevereservicethismaytakeconsiderableforce.Becarefulnottodamagebearings,spacersorbody.

CAUTION

Becarefulnottodamagebearings,spacersorbody.

Discspacers(5)areusedattopandbottomofdisctoproperlypositiondiscinbody.Properspacerswereselectedatinitialassemblyandrarelyrequirereplace-ment.Thelocationofthesespacersshouldbenoted,andthespacersmarkedatdisassemblysothattheyarereinstalledinthesamepositions,topandbottom.

10. Separatebodyfromdisc,andremovethrustwasher(9)frompackingbore.

11. Examine stem bearings (6) for excessive wear. Ifremovedfrombody,

NOTICE

Notepositionandmarktoreinstallinsamelocation.

Replacement is rarelyneeded,however, ifbearinglineriswornthroughtotheshell,orseveredamageisevidenttheyshouldbereplaced.

12.Clean body thoroughly to remove all dirt, foreignmatter,rust,etc.

13. Placethebody(1)flat,seatretainersideup,andsup-portitonwoodenblockssufficientlyabovetheworksurfaceastofacilitateinsertionofthedisc(2)inopenposition.Lowerthediscintoposition,aligningtheboresinbodyanddisc.

14. Insertnewstem(3)inbody(1)withlargeendofthetaperpinholestowardthetop.Assemblediscspacers(5)asstem(3)isinserted,makingsurethatspacersarereturnedtooriginallocationsasmarked.

15.Aligntaperpinholesindiscandstem,andinstalltaperpins(4).Drivepinsintightlywithrodorpunch,andtackweldeachpin(4)todisc(2)atlargeendofpin.

16. Install new gasket (18) on locating plug (19) andinstallpluginbody.

17. Installnewstemseals,followinginstructionsin“StemSealReplacement”section.(see pg. 4)

18. Installnewseat,followinginstructionsin“SeatRe-placement”section. (see pg. 4)

19.Remounthandleassemblyoractuator,andoperatevalveseveraltimestoverifyproperoperation.Exam-inediscandseatforanydamagebeforereinstallinginline.

TABLE 3DRILL SIZE TO REMOVE TACK WELD - In. (mm)Valve Size

Class

150 300 600Ins(mm)2.5 .234 15/64 .234 15/64(65) (5.943) (5.943)3 .234 15/64 .234 15/64 .250 1/4

(80) (5.943) (5.943) (6.350)4 .234 15/64 .234 15/64 .289 9/32

(100) (5.943) (5.943) (7.340)6 .234 15/64 .234 15/64 .341 1-1/32

(150) (5.943) (5.943) (8.661)8 .234 15/64 .234 15/64 .591 19/32

(200) (5.943) (5.943) (15.011)10 .234 15/64 .234 15/64 .706 45/64

(250) (5.943) (5.943) (17.932)12 .234 15/64 .234 15/64 .706 45/64

(300) (5.943) (5.943) (17.932)14 .234 15/64 .234 15/64 .706 45/64

(350) (5.943) (5.943) (17.932)16 .591 19/32 .234 15/64 1.032 1-1/32

(400) (15.011) (5.943) (26.212)18 .706 45/64 .706 45/64 1.032 1-1/32

(450) (17.932) (17.932) (26.212)20 1.241 1-1/4

(500) (31.521)24 .706 45/64 1.032 1-1/32

(600) (17.932) (26.212)30 1.033 1-1/32 1.241 1-1/4

(750) (26.238) (31.521)32 1.033 1-1/32

(800) (26.238)36 1.033 1-1/32 1.241 1-1/4

(900) (26.238) (31.521)40 1.241 1-1/4 1.521 1-17/32

(1000) (31.521) (38.633)42 1.241 1-1/4 1.521 1-17/32

(1050) (31.521) (38.633)44 1.521 1-17/32

(1100) (38.633)48 1.241 1-1/4 1.521 1-17/32

(1200) (31.521) (38.633)54 1.521 1-17/32

(1350) (38.633)60 1.521 1-17/32

(1500) (38.633)

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Bray/McCannalok Operations and Maintenance Instructions

No. DESCRIPTION1. BODY2. DISC3. STEM4. TAPERPIN5. DISCSPACER6. BEARINGASS’Y7. GLANDRING8. STEMSEAL9. THRUSTWASHER10. RETAININGRING11. GLANDRETAINER12. STUD13. LOCKWASHER14. HEXNUT15. SEATASSEMBLY16. SEATRETAINERPLATE17. CAPSCREW18. O-RINGGASKET19. LOCATINGPLUG20. MOUNTINGBRACKET21. CAPSCREW22. LOCKWASHER

14

13

12

3

4

11

7

8

9

6

6

18

19

2

5

5

15

16

17

1

10

20

21

22

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Bray/McCannalok Operations and Maintenance Instructions

Seat Replacement1. Withthediscintheclosedposition,removethevalvefromtheline.

WARNING

Verifylineisdepressurizedpriortoremoval.

2. Laythevalvedownwiththediscintheclosedpositionandtheseatretainersidefacingup.

3. Removesocketheadcapscrews,seatretainer,metalfireseat,gaskets,andsoftseat.

4. Carefullyremovegraphitegasketsfrommetalseat.Donotbendorcrimpmetalseat.Alltracesoftheoldgasketsmustberemoved.

5. Cleanseatretainerandbodysurfacestoremoveanyadheringgasketmaterial,corrosion,orotherforeignmaterial.Examinediscseatingsurfacesfordamage,andexamineseatingsurfaceofmetalseatforwearordamage.Replaceifdamaged.

6. Placenewseatondisc,carefullycenteringinbodyrecess.7. Placenewgraphitegasketonthebody.Positionmetalseatoverthe

disc,lipfacingout,ontopofthepolymerseat.Placeanothergraphitegasketontopofthemetalseat.Graphitegasketscanbefirstattachedto themetal seat to simplify theassembly.Spraya suitableadhesive,like3MSuper77generalpurposeadhesiveorsimi-lar,in3or4spotsonbothsidesofthemetalseattoholdthegasketsinposition.

CAUTION

Handlethegasketscarefullyastheyareverythinandareeasilytornorscratched.

8. Alignholes in seat retainerwithholes inbodyandseat, andcarefullyplace seatretainerinposition,ontopofseat.

CAUTION

Becarefulthatseatdoesnotshiftwhenretainerisinstalled.

Lightlygreasecapscrewthreadsandtightendownevenlyinacriss-crosspatterntoassurepropercenteringanduniformcompression.TorquecapscrewstothevaluesgiveninTable 2 (pg. 5).

9. Lubricate the disc edge with molybdenum disulfide spray or similar lubricant, ifavailable.Asaminimum,lubricatethediscedgewithlightmachineoilorlightgrease.Operatevalveseveraltimesandexamineseatfordamagebeforereinstallinginline.

1. TheFireSafeBray/McCannalokvalvewillprovidefiresafe shutoffwith flow in either direction,meetingAPI607andBritishStandard6755part2criteria,aswellasbubble-tightshutoffineitherdirectioninnormalservice.However, installation with the seat retainer upstreamprovidesmaximumprotection to the soft seat, andwillincreaseseatlife,especiallyinerosiveservices.

2. Installationboltinginformationanddimensionaldatagiv-enforthestandardMcCannalokvalvesisalsoapplicabletotheFireSafeversions.

Stem Seal ReplacementTheprocedure for replacementonpage 4 alsoapplies toFireSafevalves,withthefollowingexceptions:

1. GraphitestemsealsareusedintheFireSafevalves.Thearrangementofthetwotypesofstemsealswheninstalledis:bottomseal–carbonfiberbraidedring;centerseals–graphiterings;topseal–carbonfiberbraidedring.

2. Table 4 showsstemsealquantitiesforclass150and300valves.

TABLE 4TOTAL NUMBER OF STEM SEALS

Valve Size Class150

MaterialCF / G

Class300

MaterialCF / G

Class 600Ins (mm)

2.5 (65) 4 2/2 4 2/2

NO

FIRE

SAFE

VERSION

3 (80) 4 2/2 4 2/24 (100) 4 2/2 4 2/25 (125) 4 2/2 4 2/26 (150) 4 2/2 4 2/28 (200) 5 2/3 5 2/310 (250) 5 2/3 5 2/312 (300) 5 2/3 5 2/314 (350) 6 2/4 8 2/616 (400) 6 2/4 9 2/718 (450) 9 2/7 9 2/720 (500) 9 2/7 9 2/724 (600) 10 2/8 8 2/6

CF=CarbonFiberG=FormedGraphite

GLAND NUT TORQUE - In-lbf (N•m)

Valve Size Class150

Class300Ins (mm)

2.5 (65) 35 (4) 45 (5)3 (80) 35 (4) 45 (5)4 (100) 35 (4) 45 (5)5 (125) 45 (5) 65 (7)6 (150) 45 (5) 65 (7)8 (200) 45 (5) 80 (9)10 (250) 65 (7) 100 (11)12 (300) 65 (7) 100 (11)14 (350) 80 (9) 125 (14)16 (400) 100 (11) 150 (17)18 (450) 100 (11) 150 (17)20 (500) 100 (11) 150 (17)24 (600) 150 (17) 200 (23)

Special Instructions Fire Safe Bray/McCannalok Installation

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9

Bray/McCannalok Operations and Maintenance Instructions

Stem and Disc ReplacementThesameproceduresapplytoFireSafevalvesastothestandardvalves,withtheadditionofthespecialrequirementsforstemsealandseatreplacement.

Field Adjustments – All ValvesStemSeal Leakage – Should leakage occur at thestem seals, it may be stopped by retightening theglandretainernutstothevaluesspecifiedinTables 2 (pg. 5) or 4 (pg. 8).

NOTICE

Donotovertightenglandnuts,as thismaycauseincreased operating torque and improper valveoperationorclosure.

Iftheleakagecannotbestoppedbythisaction,thestemsealsrequirereplacement.AdjustingValveClosure–Valveswithgearactuatorsor electric/pneumatic actuatorsmay require adjust-mentof the travelstops in theactuator toproperlyclosevalvefortightshut-off.Thefollowingproce-dureshouldbefollowedtosettravelorlimitstops.(Itisrecommendedthatthevalvemustberemovedfromlineforthisprocedureandactuatormounting.)

1. Usingastraight-edgeandvernierordepthcali-per,measurethedistancesfromthefaceoftheseat retainer to the disc (valve closed) face atthe3o’clockand9o’clockpositions (stem isat12o’clockposition).Themeasurementsmustagreewithin1/16”(0.062”).

2. If they do not agree, disc must be rotated inthe direction of the larger dimension. If the 3o’clockdimensionislarger,thediscisnotfullyclosed,andmustberotatedinthe“close”direc-tionmore.If9o’clockdimensionislarger,discisover-closed,andmustbeopenedslightly.

3. Thevalvediscisatthefullopenpositionwhenthe disc is perpendicular to the body. Set the“open”actuatorstopforthisposition.

CAUTION

Do not allow the valve to over-open as thismaydamagethediscseatingsurfacesbyhit-tingbodyorattachedpiping.

4. Ongearoperators, loosenandadjust theclos-ing stop screw topermitproperdiscposition-ing.Adjustandlockdownwhendiscclosureiswithinmeasuredtoleranceinstep1.Openandclosevalve;recheckmeasurementsbeforerein-stallinginline.

NOTICE

The setting of the actuation device’s closetravelstopisimportant.The valve has an internal travel limiter toensurevalvedisccannotbeoverclosed.Toensure that thevalve travel limiter isnotdamaged, the actuator close travel stop boltmust be at a position just before valve disccontactsit’stravellimiter.

5. Forotherpoweractuators,consultthemanufac-turer’s instructions for setting travel stops, asthesevarywithactuatormodelandtype.

6. Ifremovingthevalvefromthelineisnotpracti-cal,asacruderemedythedisccanbeplacedintoapositionintheseatatwhichtheleakagestopsandtravelstopsareadjustedtothisposition.

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Bray® is a registered trademark of BRAY INTERNATIONAL, Inc. © 2012 Bray International. All rights reserved. OM-40-001 07-2012

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CONTROLS