Document a1b1qmrnRn6gLwkKE3g9xd5V9

FILE NAME: Oil Industry and American Petroleum Institute (API) DATE: 1952 July DOC#: API085 DOCUMENT DESCRIPTION: Trade Journal Article - Application Methods for Mineral Wool Pipe Insulation Heating . Vol. 24, No. 7 PAiiprinCgon&ditioning (with which it mergatl th AftrologUt) D esign, Installation, Operation and M aintenance in Industrial, Commercial. Institutional and P ublic Buildincs ' Board of Consulting and Contributing Editors . . . . N. R. Bernz, Leo F. Collin, Sabin Crocker, R. C WDoarletemrut,L. PhFilleiipaheDr,rinFk.er,E. MG. leKse.ckFe,ahnWeailtloiacmk, Goodman, William A. Hanley, J. J. Hannan, G. W. Hauck, R. S. Hawley, E. P. Heckei, R. E. Hieronymus, J. C. Hornung, Lee P. Hynes, C. W. Kimball, Dwight D. Kimball, A. C Kirkwood, CMhuarrplehsy, SA.lfrLeedopJo.ldO, ffSnaemr, uFe.l BR..RLowewleiys,, RHo.beCrt P. Schoenijahn, Kalman Steiner, T. S. Tenney, Ruth D. Toulon, Eph. A. Tyler, W. H. Wilton E ditor . . . . C M . Burnam, Jr. A ssociate E ditob . . . . T homas V. Joh n so n A ssistant Editor . . . . A ileen H. B urns Advertising Staff . . . . Wallace J. Osbom and Robert J. Osborn, New York--Murray Hill 9-8293 . . . . Robert A. Jack, Cleveland--Evergreen 2-1840 . . . . James D. T2-h6o9m16as. .an. d. RG.ePo.rgWe eCttsteCinu,tleLro,s CAhnigcealgeos----SDtuatne kciisrcko--8-Y22u8k6o,nP6o-r2t5la2n2d--Atwater 4107, San Fran P ublisher . . . . Frank P. Keeney M anacer . . . . Charles E. P rice Circulation D irector . . . . F rank S . E aster P roduction M anacer . . Lawrence A. Doyle Published monthly by the Keeney Publishing Co., 6 N. Michigan Ave., Chicago 2, 111. Telephone: STatc 2-691. Subscriptions: U.S. and possessions, 43.00 per year; Canada, Cuba, Mexico, Central America, South America, $4.00 per year; other, $6.00, Current copies, U.S. and possessions, 33c each; back copies, 60c each. January 1932 issue unavailable. For change ooff baodtdhreossld, nanotdifynewpubaldisdhreersseasnbdy ytohuer 13lothcalof ptohsetofpfricee ceding month. Member Audit Bureau of Circulations and Associated Business Publications. Inc. Heating. Piping Be Air Conditioning is indexed regularly by En gineering Index, Inc. Copyright 1932 by the Keeney Publishing Co. Entered at Second Class 'Matter May tt, 1929 at the Post office at Chicago, III., U.S.A. under the Act of March 3, 1879. Additional entry at Mendota, 111, JULY 1952 Features Air Conditioning Aidi Choir* of Nett President . ______ ______ 73 Air Recovery Revamps Heating System_________________________ 77 Making Piping Flexibility Analyses ___________________ _______ _ 78 Old House to New Museum_______ __________________ _______ 82 Birth Rate Means Construction Boom_____________________ ____ 85 Why Manufacturing Plants Are Air Conditioned _____ _______ _. 86 Device Locates Piping Corrosion _________. __________________ 91 "Mothball Fleet" Pays Off _______ ____ _____________ ______ 92 Put Headers and Valves Handy ............................................................... 96 Building Managers Meet ......................................................:.................. 98 Analyzing Pipe Line Networks ............................................................. 100 HPACCNA Annual Convention ....................-......................................... 104 Hot Radiography for Piping Installation ............................................. . 105 Applying Mineral Wool Pipe Insulation _____________ _______ 106 How Flow Obstruction Was Overcome .............................. ................... 108 Electromagnetic Pump .............................................................................. l i j Standards for Stainless 58 Pipe .............................................................. 114 Departments The Editor's Pages (news and n o tes)___________ __ _________ 65 "Open for Discussion" (comment and criticism)------------ ------------- 69 The Law and Your Profits (tanked check may mean loss) ............... 109 Question of the Month (doorway air curtain) ...__ ______ ............. no Data Sheet (dimensions, weights of pipe) ....................... ................ 115 Sam Lewis' Page (garage heating problem) ________ __ _________ 116 Equipment Developments (new products) ........................____ ____ 197 Who's What (names in the news) ------------------ ------ ----- .....................232 New Books and Reports (sources of information) ______ .................. 248 Meetings and Conventions (who, where and when) ___.................. 252 Recent Trade Literature (manufacturers offer data) -......-................ 254 Index to Advertisers (in this issue) ._------------------- ................... 272 ASHVE Journal Section Drying Atmospheric Air for a Supersonic Wind Tru.nne.l E_m_lr_y_,_J_r.__ 117 Smoke-Filaments for StudHy. Bof. NRoonoamge,AJi.r GD. iSsltarbibyuatniodnIT......P.....G...o..j.s.z..a.....123 Status of the Heat Pump in the SouthSe.aLs.t_P_a_p_p_a_s_a_n_d__F_._R_-__O_'_B_r_ie_n__ 126 Summary of Chapter M eetings-----------------------------------------------131 Candidates for Membership ________ _________________________ 144 Officers, Council and Committee--------------------------------------------147 5 Application Methods for Mineral Wool Pipe Insulation HARRY E. LEWIS, Executive Director, and Charles E. Young, Chairman, Specifications Com mittee, of the Industrial Mineral Wool Institute, explain the meth ods of applying the various types of mineral wool insulation to heated piping and illustrate the comments with sketches. Tables give the thicknesses of molded type insulation and recom mended minimum thicknesses The specification of insulating ma tgeorviaelrsnedandby atphpelicpahtyiosincalmaenthdodospeirs ahteiantgedcheaqruaciptemriesntitcsorof stuhrefapcaertitcoulbaer einqsuuilpamteedn.t Trheequmiroisntgcominmsuolnatitoypne oisf poiilp.incghe--miccaarlsryianngd woaitleier,r stmeaamte,rigaalss., Ppripoepoirntisounlattoionthecoenfftircibieuntceys oinf alasrygse tem and therefore is of direct concern tdoestihgen,eningsintaelel,rsopanerdatceonatnrdactmorasinwtahino pipTinhge sefrovuicres.particular conditions wspheiccihfyimngusitnsufilrasttionbeoncoansgiidveernedpipine lcionneteanrtes, ((12)) toemutpsiedreatudiraemoeftetrheofpitphee pdiopoer,s (o3r) oluotcdaotoiorsn) oafndthe(4p)ipdeeg(riene of exposure to external damage. Tamheosnegcootnhdeirtsioanrse aorrciemntoasttioncomofmpoinp; oinngal)(,heoxripzoosnutrael, tovemrtoiicsatlureo, rrnudliavgi bration. Two Common Types of Insulation miTnherearle waoroel ptwipoe icnosmulmatoinon,tybpleasnkoeft asunldatimonoldiesd.minBelraanlkewtootylpereipnifpoerciend ocnonfoinneingormaLtoetrhialsiadneds bboyunad stouiftaobrmle a nonrigid insulating section. De 106 sbiogtnhedmaaxnidmummanfulefxaicbtiulriteyd atnod hhaigvhe tshizeersmtaol fietffpicipieinngcyf,roitmis2 pinro. dduiacmedeteinr manadteuripa.lsThuesemd oasrtecoemithmeornmceotnaflinlianthg soercuwreirde bnyetwtiinrge, obr octohrdoftiewshtihcrhouagrhe the mineral wool itself. Blanket type pipe insulation is commercially man suefcatcitounrse,d 1inin2.4 iton. 4lonign.sinthgilcek,layfoerr skteatnsdaarred speilpeectesdizehs.aviSntganddiamrdensbiloanns wpihpiech awt ilslpeacsisfuiered ainssnuulagtiofnit tothitchke nesses. sulMatoioldnedctoynpseistms inoefral mwionoelrapl ipewoinol ctoomfobrimneda rwigiitdh inbsounldatiinogn. inTghreisditeynptes ohfuiIpipstereinngstuhlatwiointh cogmoobdinesinsruiglaidtiintyg TinAsuBlLatEion--1--thMickOnLesDs*ED foTrYPsEtandpairpdeweight steel pipe sizes Pipe size, in. Nominal Actual OD Sthtiacnkdnaersds sDtaonudbalred thickness >a % O.fUO 1.050 % % 1% i Vi 1 VA 11..361650 % % i% 1*4 V/2 1.900 % Hi 2 7.375 1n ; 2 23Vi 2.875 3.500 i 2 A 2A 3 Vi 4.000 1 2 wt A l.5U!l D* 2! -1 Vi " 5.000 5 5.563 1 l/k I Va 2 V 4 2 Vi 6 6.625 1 Vs 2 '/. 7 h H 78..662255 IV . \'A 2 Vi 2 Vi 9 b 9.625 10 10.750 i V. i Vi 2 Vi 2 Vi 11 b 11.750 12 12.750 I '/ . l '/2 2 Vi 3 14 and up -- 1 Vi 3 In addition to the thicknesses specified above, molded type pipe insulation may be manufac tured in thicknesses of 1, 1V2 2 2Vi, 3 and 4 in. for all nominal pipe sizes. These pipe sizes are not listed as standard for steel pipe in Simplified Practice Recommenda tion R.57-32, Wrought Iron and Wrought Steel Pipe, Valves and Fittings, cphaartriaccutelarrislyticesasayndto isinssthaallp.edMtooldehde psiinpgeleinasnudlatdioonublies lmayaenruftahcictukrneedsseisn. Earadchlesnegctthionfouisnd36geinn.erlaollnyg,maossttaunsde ifnugl., mTooldiendsutylaptee msminaelrlaldiwamooelteisr spuipp plied in sections (half cylinders), wpihpiec.h Faorer lfairttgeedr ptoipgeethseizres,ovmeroldtehde styepgemenintssul(autsiuoanllyisfomuar)n.ufaTchteurmedanuin facturer maintains a tolerance of finit. tifgohrtlayl.l dimensions so that it will staInndaorrddearntdo dfaocuiblilleatsetasnpdeacrifdicathtiiocnk, nfoerssesstaonfdamrdol-dweedigthytpestpeieple pinipseulahtiaovne bCeoemnmseetrcfioarlth bSytatnhdearidndusCtr.yS,117[-s4e0e, "Mineral Wool Insulation for Healed Ignivdeusstrthiaelse Ethqiucikpnmesesnets".]forTnaobmleinal1 pMipoeldesidzetsypferopmipel/>intsoula1t4ioinn.maanyd aulspo. banedm4aninu.fatchtiucrkendesisnes1,folrl/>a,ll2n, o2mVion.a3l pipe sizes given in the table. diaOmnetlearrgaendpiuppin, gi,t uissuoafltleyn 1v4eryin.saitn sisuflaactitnogry cteomaepntp,lypamrtiinceurlaalrlywoowlheirne icrormegbuilnaartisounrfawcietsh atrheeenpcipoiunngte. redThine insulation thickness required by pipe sleempapreartuetulraeyeisrsb. uilItt uips ornecothmempeipnedeidn tihna. t eEaacchh llaayyeerrbsehonuoldthhicekaelrlotwhaend tfoi dorfyfuthrtohreoruginhsluylabteinfogrecetmheenatp.plication pipMeolrieneheifatthweiltlhibceknseasvsedof otnheaniny scuolsattioofninissuliantciorneaspeedr; fohootwoefvepr,ipitnhge aalnsoecionncroemasices.thicTkhneerses iosf, itnhseurelafotiroen, wsahviicnhgswpilelr rdeosulllatr ionf mcoasxti.muTmablheea2t gives recommended minimum insula- Heating, Piping & Air Conditioning, July 1952 FIG. 1--HOW BLANKET type mineral wool insulation is applied. A, bare pipe; B, blanket mineral wool wrapped circumferentially around bare pipe; C, joints secured with No. 16 ga galvanized wires; D, insulating cement; E, asphaltic or other specified finish HI. I--S1N<11.1-. LAYER METHOD of applying molded insulation. A, hare pipe; B, sectional mineral wool pipe iDn,sumlaettiaoln;banCd,s canvas jacket or other specified finish; FIG. 5--DOUBLE LAYER APPLICATION of molded pipe insulation. A, bare pipe; B, first layer secured with No. 16 ga galvanized wires; C, second layer applied with all joints staggered; D, canvas jacket or other specified finish; E, metal hands FIG. 4--SEGMENTAL MOLDED insulation is applied " similarly to sectional insulation. A, bare pipe; B, seg mental pipe insulation; C, No. 16 ga galvanized wires; D, insulating cement, when required; E, canvas jacket or other specified finish; F, metal hands lion thicknesses for blanket type pipe insulation, 150 F to 1200 F, and bmeololwded27t5ypeF ptoipe600insFu.latioFno,r feraocmh tmypeendeodf pmipieniminusmulatitohnic,kntheessersecoamre ertievre.n fNoortethrtheeat rathnegedsatoaf fpoirpemdoiladmed stytapnedaprdipeandinsduolautbiolen straenfedrardtointshue latTiohne ththicickknneesssesessgiivnenTainbleTab2lear1e. trieocnosm. m\e\nhdeend pfiopringinidsoolorcataepdploicuat dinosourlsa,tioitn itshicrkenceosmsmbeendinecdreathseadt nthoet lseosmsethiannsulatiinng. vBaelucea,usteheeatrhtihckinseossf misaiynshtealldeedcreuansdeedrglr/io;uinn.d.when piping Applying Blanket Type Pipe Insulation andUsluoanlglyraadpipulsiebdenodnssotrfa2ighint. psitpainndg apridpepipinesusliazteioonr la(Frgiger., b1l)ankiest tfyirpset wthreappbeadre cipricpuem. feTrehnetiallloyngitaurdoiunnadl eladcgiensg arweiththe1n6 segcauregdalvbayniztyeidngsoofrt isriodne owf itrhee, ppirpeifnegr.ablTyheonmitnheeraul nwdoeorl blanket sections are tightly hutted tuongbertohkeernoninstuhleatipoinpecotvoerpinrogv. ide an ishTinhge bmlaantekreitaltsypaendinsmuelathtioodn fdoerpefnind uoputodnoowrsh.ethGereniterisallloycaatcecdepinteddoomrsatoer rdioalosr fpoirpifnignishinincgludiensumlaitnioernalonwoionl ipnhsaulltaictinmgasctiecmeonrt,emrouolsfiionng afnedlt, caans ovavse.r thInesubllaatninkget cteympeenitnsiuslataipopnlieind ttwrooweUl4ledin.onlayaenrds. alTlohweedfirstot ldaryyerbeis fsoerceontdhe asletceornnadtivise apfpinliieshd,. aAssphtahlet saarotuurnadtedtheropoipfiinngg, flealptpeids awt rleaapspted2 cino.mapnodunodftenorselaalpedcwemithenat.n asRpohoaflitnigc fpeiplteswhoituhldcobpepseercuwreirley ohreldgaolvvaenriztehde 6iroinn. hcaenndtsersspaalcoendgotnheapppiproe.ximately indTooorapppiplyingancovaseprehdaltwicithfinbilsahnkteot type pipe insulation, a % in. layer of mfirisnteraalppwlioedol ainnsdu,latwinhgencemdreyn,t iiss cnoevtteinregdstwreittchhe1d oinv.ergtahlevasnuirzfeadcewainrde mtigahsttliyc owr ieremdulsiinonpilsacteh.en Atrospwhealllteidc iinn.todtrhye wthiirceknneeststing(otro apbroouvtide%a i%n. wpihpeen jwacekte).t, Aas laaybearseofforflaamceapnrvoaosf poarpaerI,/41i/n1.6laiyne.r tohficiknsauslbateisntgoscepmapeenrt is first applied. The canvas jacket TwAooBlLEpip2e--inRsEulCaOtioMnMENDED MfNIMUM insulation thicknesses for mineral Blanket Ttyhpieckness, in. Temperature, F 2Piinp.esin 4Piinp.esto P6ipilel.s 4 in. 6 in. nd up 150 to 250 ......... .. 1 I I 250 to 350 .......... . 1 1 1 350 to 450 ___ . 1 450 to 550 ........... 1 iVi 1^2 iy2 550 to 650 ........... 650 10 750 .......... . m i2y 2 2 2 750 to 900 ......... . 2 900 to 1,050 ......... . 2 2 2 4 23Vi 1,050 to 1,200 . . . . 2>/j 3Vi 4 Molded tyi* Temperature, F Pipes Thickness, in. Pipes Pipes b2elionw. 24ini.n.in 4 inu.pand Up to 275. ___Std......... . Stsl irr! 275 350 to to 350. 425. ... ... S td ........ S t d ........ .........Std ... . 11/T .........W .i................2 425 to 500. ___i y2 ___ ........ 2 . . Dhl M 500 to 600. .. Db!. std imsattheernials.ewTnooirnspuarsetead toigvhetr ethoveebraosne a sewn canvas jacket, the stitches s1h/o3ulidn. binetesrpvaaclsedaloant gntohempoipree. than covWerhsenpipbilnangkleotctaytepde epiitpheerinosuutldaotioorns doarmeaxgpeo,sedit tois muosiusatullrye ofirniaschceiddenatnadl ewtse,atrhoeorfpirnogoffeedlt boyr sahneetasmpheatallt jcaocmk pound. A sheet metal jacket should be at least 2b ga, single or double dgoalwvannwizaerdd. agTahinestsethame swaeraethelrappanedd si/e>cuirne.d wwiidthe goarlvagnriezaetder,mewtahlichhanadrse, mis acnhoitner-esctoremtcmheenddeadndthactrimthpeedb.andIst bceensteprasceadlonagt tmheucphipem.ore than 6 in. The roofing felt finish is applied isncritbheedsaamboevme afnonrerinoduotodroolroscaatsiodnes. To avoid the possibility of welling the insulation, it is very important to lap the roofing felt downward. An amsapnhnaeltricofuitndioshoriss aasppinlieidndinootrhse, smamake sinugfficceierntatilny ththaitcktheanadspheavlteinc caotat ailsl points. Application of Molded Type Pipe Insulation odsTheofsinagplpelyainndg dsoeucbtlieonlaalyermmoledtehd tFyipges. pi2peainndsul3a.tionInareFigil,lus2t,ratseindgline olavyeerr tsheectipoinpailngi,nsuwliatthionallissepcltaicoends wtigithhtlya hcuatntevdastojgaectkheetr,aanndd bisancdoevdereidn spelacctieo.nalDopuipbele inlasyuelartioapnpliincatiFoing. o3f irnequpilarecse thwaitththeloofiprsst olafyewrirbeessepclaucreedd soencoanpdprloaxyiemraitselytig8htilny. fciettnetdersd.ireTcthlye ostvaegrgetrheed ftiorst avlaoyider awliigthninagll ejdoginetss. Aa scawnvitahs tjhaeckseitng(loer loatyheerr afpinpilsihc)atiaonnd, metal bands follow. typAepppliicpaetioinnsuolfatisoengmienntaFligm. o4ldeids wsiimthilasrecttioonatlheinspurloucteiodnu.re Afolllhloowugehd Fig. 4 shows a single layer method, dtioounblceanlaaylesro sbeegmobetnatianledp.ipeOninssuuclah large diameter piping, mineral wool ionvseurlattihneg icnesmtaellnetd isseogfmteennttsrowheefloleide afipnpislhy.ing the canvas jacket or other A canvas jacket is a most satis finacsutolarytionfinilsohcaftoedr minodldoeodrs tyapned pnipoet ceaxnpvoasesdjatockmetoiisstudreraowrnabtirgahsitolyn. oTvheer ltahpepipnipge eadngdess.mooTthhely mpaesttaeld baat nudlsl sbhoothuldthbee cseecnuterredaonvderetnhdes caonfvaesacaht lweneiggthht ocfanivnassuliastiospne.cifWiedh,eninsfualcatotiroyn- and canvas are supplied as a unit. staMlleodldeodn otyuptedooprippeipiinnsgulaotrionin ilno cwaetilotinnsg wmhiegrhet aocccciduerntiasl fdianmishaegde oinr obnlaenkoeft tthyepewapyi|>se reincosumlamtieonndedundfoerr sinimg ilmarethcoodnsditairoense.xceAlllelntf,otuhre finish finish mdiotisotnsapbperionpgrisaetleecfteodr. particular. con HOW WE OVERCAME FLOW OBSTRUCTION By Carl A. Ramslml, Scott Paper Co. PITOT-VENTURI Till; USE ok an orifice for the meas rod wns connect FLOW ELEMENT luirqeumoerntproefstehnetefdlowthoef spuolspshibitielitwyasotef etednetod atolethveermfaasst oribesdtraulcotniognthdeubeotttoomsoloifd thmeapttiepre.caArt and long enough to p r o v i d e an tohfefisllaemr eintitmhee,liqthueorsmwaolulldpeprrcoebnatabglye aonfgalbeouoft 1r2o0tatdieogn. build up around the edge and cause a false differential. Waphpelineda irto wtahse floTwhmereeafosurere,mteonto, batapinitota-nvenatcucruirdatee bpaisctkons,idteheofhetahde vdiecceidceodnnuepcotend. toAawfaltoewr pmuertgeer wwaass ewnaosughturntoed flufsahr PISTON ROD connected to each line. It was soon learned that the purges tfhibuesr giovfef, ananadc AIR CYLINDER cwleearen ainnsduftfhicaitenitnctoorrekcetepvaltuhees hweearde curTaote rmeaadkieng.the device automatic, THIS SCHEME is used to flush fiber off the flow element in a sulphite waste liquor line. A time switch energizing being given. An experiment, which turned out austeidmetosewnietcrhgizweasa a solenoid operated air valve makes the device automatic to be satisfactory, was decided on. The plant salvage department pro svoidleendoiadn oouptepruattetdo avaslmvea.ll dTiahpihsrapgrmo cmyaltiincdaellry.and turned the head auto vaidsleiddiangsmstaelml afiorucry-wlianydearirwvitahlvwehhiacdh wmhoitcohr,minoutnutrend, odnetethrme finoeudr-wwahyicvhaldvie theThheeadreaisditnugrneisd,inbuetrrthoer paesrcloenntgagaes bpeeenndedusferdo.m aTbhreacckyeltinsodetrhawt athse spuiss rtiemcteior nwtahse speitsttooncslhosoeultdhetracvireclu. itTfhoer osmf aellr.ror[Rineprpoodinutcedof ftriomme "isTaqyulioter tmonasttroafvethl ewpaistoat-tvreingthutri,angTlhees ptoisttohne aTbhoiust r4e0verosred50thesecpreevsesruyre 15tomtihne. TTeacyhlonroloIgnyst"rutmhreonutghCtohse.] courtesy of 108 Heating, Piping & Air Conditioning, July 1952