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• The Wet Chemical Ftre Su� ession System c� �� `'�� <br />3-23 Desi�ning for Pipe Size and Type Within the Bounds af Piping <br />Limitations <br />Piping and Fittings <br />Rangc Guazd systema do not requlre halanced <br />plping to achfeve proper dlstrlbutlon of wet chemlcal <br />ta all nozzles. Halanced plping Is not necessery <br />because a llqutd kias no dlfPculty In turning cornera or <br />changing dlrectlons. Range Guard nozzles come <br />equfpped wlth permanent predetermined orltices. <br />Thls means that the ltqufd wlll be dellvered In the <br />exact quanUtles necessary to thc duct, plentun azid <br />appllance hazazds as requlred. <br />All plpe shall be schedule 40 (standard welght) <br />black steel. Plpe may be chrome plaled. Galvantzed <br />plpe shall not be used. Ail plpe a;id flttings must be <br />m¢de Ughl wllhoat plpe dope or thread sealant. <br />Plpe Ilttings shall be standard welght steel, <br />cas[ Iron, malleable tron or ductlle Iron. Galva,dzed <br />Otlings shal► not be used. Hranch llne connrcllon and <br />Indlvidual nozzle connectlons may he made by using <br />elther the outlei or lhe run of a tee. <br />Stain[ess Steel 7L6ing and PYttinga <br />Stalnless aleel tubing may be used on all Range <br />6uard syatema. FI[tings may be etalnleae eteel <br />compresslon or afalnless steel Anre types. aending of <br />tubing using mandrels Is permissl!�le. <br />Pipe Sizing <br />Ptpe sizes are determined by the total number of <br />flow numbera runntng throu� a particular plece of <br />plpe. Thls ls lhe llow demend for that porUon ot the <br />system. - <br />NOTE: It is not permissibie fo drop plpe dlemetera <br />belowtherequiredvalue. Forexemple,ueing <br />1/2" (1.3 cm) plpe to tiow 78 floe: numben Is <br />not permisaible. How•avc«r, i�cr�cstng pipe dl- <br />ameler la ecceptabie (I.e., uaing 1" (2.5 cm) <br />pipe to flow 18 tlow numbers) providing the <br />syatem c.�i�olles wllh Intemel pipe volume <br />Ilmltetion� <br />Table 3-5. Flow Number Range and Pipe7Vpe <br />GENERAL RULES <br />• A maxlmum oC 100 equlvalent Ceet (3Q.5 m) (but not more than 40 (12.2 m) llneaz feet) of 1/4" (.6 cm) <br />plpe may be used for each branch llne. <br />• The hlghest polnt oCthe system shall not exceed 12 feet (3.7 m) above the cyllnder outlet.. <br />• The vertical rlse of a branch llne above the supply line shall not exceed a maximum oC4 feet (1.2 m). <br />• Maxlmumdischazgeplpevolumeltmttaclonssliallnotbeexceeded. <br />• Maximumequlvalentlengthllmttatlonsshallnotbeeacceeded. <br />• Maxlmum ffow polnts for a glven plpe shall not Ue exceeded. <br />• i;:ere are to bc no low polnts or "traps" present ln dischazge ptping. � <br />�� <br />U.L.I. Ex 2458 3•23 Manuel Parl No. 9127100 (9/97) Badger Fire Prolecdon <br />