Document RzV15gEk5XM43QmMJ0pRaLka

American Society of Heating and Ventilating Engineers Guide, 1929 D Isi Tl!^,'$15rf)!5Cl(:i'y)rirt^ooO'ti-iQo>oQOoooQfOTfgo NTj'O00^'ONrH'Oci0'ON00'000-<r'O00^oO*-'NOt^ *1 J 8S e- 3 g 0000-4-ifSCNfO`Or'OiONT}'0>fO'OoOTj'NiOvOiod Plain Ends 2M ao * cs^>coo*H'ONt,*'Oeo*Htxin\oo\*0'Om^NN^'iot-o *Z> 0000*-'*iNNrO'OrHO>ON^OOfn^OOt^H^d'rtW>Oi Internal Surface' bO. 0\^rH*HiflW|s,esNb*iovoooe'OOi<onoob^,'0*-ii>ioM Is T-<^tH^noior'foooocNOOseoN'OiOTrT}<^'fototOfO(oto Ah O Tf Ot''O^'t0tSN-4 *-!.*- ^-<000000 0 000000 0 a gstc S ^<t^OONtH^i^iOOOCO-H<tOOiO'0'OQMN,0`OiOiOiOO''0> Tj'0'Ou,)'OOltoO'fOO^OO^'0`0>0^'4tOfOrOfOtON(N J afHt. c>Nic^wNNNHrtHoddd66d6ddddd6d External Surface Table of Standard Dimensions 3p2 N(NNiO'ONlOOf(O*)^OO\''O00iO'N<OtC<ONOC<I0tohO.0OC'OH<oNv'oOaO^OONtNSNOOO-O4'N00N\ 0<HHHNco^t<'OeOts*M'0H\oroiOOitNmOi-<00\^lCO<0 OOOOOOOO'-'-'CSN(<>^inOtH000vOi6'-i^N^ a< s < tH^iH^to<}'io'0ocofO'OON\o<-'oO'-tH'OiniHo(<)ON a 1~- i0OOHO^r>oO>foOo'0o0r>}'f0O*O)bC*fOOOQiOOObt<O3^NQOOo>o(0e'"0^(NOCr>OiOOO'OOO>iOOOr<o)OoOOi s1 OOOOOOhcs(*)tJ*n^ c<nj-'*<o-o(NoNoofOoi<n-iOiO'0N0H0ONoOo'.0^^T'fHn 2 2 0N'N0'oOo<lO#''O0o0o'^0<<'noto<<)0N>'-Ni''oO^O*ifoOoOcNs'O^,r'40C'oSo'0f'o0'tOnvfoO^fO"0N'N0 ?-tMtoooOfoHoo^'t'0oo>'Oco^,'5'd'^,e'r>*t^r"4''0'0 !<* OOOOO<HNNTl<v0OvNU)O'^^O0000NOOONN --1 H u^^<g\ri<O'\otO00Tt<t--00'OoOlOOT4<rO'Of^ON&v'r)4>OOCNO\ g 1J " 00HioOiU)NW)O^t''O*HOH00OOf'5OOOW^"OCK'0 2 1 s O'HHrHMt^^<iO'OtHO\<HM^<lO0\N,O`O00CN^^^tNts. Sa MHtHiHPHNcsrsNfototofOfxn 00 < t- 5 tCH4O'O\N<^tO50\O't\or-H<HOoO'0'*^(nMo'O>''OONf^*O00Nt^HfO<Uio)o'O'O0'0^0tHCNr'CNS-HN'#iolOtnn CS'OH\OM^NO>T}<OOMOrHl^<4<50C'OONNNNOOO ^<HMNtn^*>0Ot'0OM^<iONOt^NNOfOfOfO'000 External Inches Nominal T hicknessI nches 0'OCo)0o0C^'^0f<O-r'f0oO^|^O*'<oJ,otO'tO<'OcNfHfroH^Cio0oOo-o<ft^>*'cCsS^P`4bO*'f0,*>'OO>fO'(nON`n OOOHiHH^rtHHNNrs|(N'(SNNfONtOfONfnf^fOf*)fO00000000)00000000000000 0 00 0, Approximate Internal Inches ' . ag a II O'il'OM'j'aOONpioOOO'O'ONVlf^'HHwN'OOOOO N^'4"000 0^'0 0^0`00'0 00 000'0'p-phOo50 OOOOOHp4iH(N(Slt^<t*r'O'ON00N00OOOHNpi 'v4'OO'lO/)OooOOirnOO'OQO1v/!^*|"/o)QoOiCOQOQOin'OOOf'00'fCl|'OONCi'O0Si'MoOiNr'CP,ir4'O)<OONiOOb.<OtCHOiONO`N0>ONn o o o-o <-*-H^rHe)CNtnTt<^'iniovObooooovOod'-MN CeNOa MnWS5 ^^ M-HiHfs|N(<)^Tl<<4`in'OboOaoaOOOHM(N 344 XXIChapter --Pipe and Fittings or uniform the pipe may be, its life, particularly under severe corrosion conditions; such as, hot-water supply lines, boiler feed and return lines, is limited, and some protective measures are necessary to secure a longer life. . . The electrolytic theory of corrosion,-as formulated in 1903 by Dr. Whitney, led to the development of certain protective methods for closed 4 4x4*2 TEE 4 4x3*2TEE 4 4*4*2 LATERAL 4 2--|--2 3 4. 4*3*2 LATERAL -4 4*4*2*2. CROSS ' 4 4*4*3*2 CROSS 4 4*3*2*lj CROSS Fig. 1. Usual Method of Designating Fittings water systems, which are based on- the removal of dissolved oxygen from the water. Careful experiments in various research laboratories have demonstrated that the amount of corrosion found in such systems is almost directly proportional to the amount of oxygen in solution, and varies with the temperature. All reliable data on this subject indicate that the composition of the iron--i.e., the varying amount of carbon, phosphorous, manganese, sul phur, silicon, oxides, slag and copper usually found in wrought.iron and soft steel---makes Very little difference in the amount or character of 345