ASTM_F_1139_-_88_2015.pdf

Designation:F113988(Reapproved 2015)An American National StandardStandard Specification forSteam Traps and Drains1This standard is issued under the fixed designation F1139;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This specification2provides the minimum requirementsfor the design,fabrication,pressure rating,marking,and testingof steam traps and drains.1.2 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.3 The following safety hazards caveat pertains only to thetest method portion of this specification.This standard does notpurport to address all of the safety concerns,if any,associatedwith its use.It is the responsibility of the user of this standardto establish appropriate safety and health practices anddetermine the applicability of regulatory limitations prior touse.2.Referenced Documents2.1 ANSI Standards:3B16.1 Cast Iron Pipe Flanges and Flanged FittingsB16.3 Malleable-Iron Screwed FittingsB16.4 Cast-Iron Screwed FittingsB16.5 Steel Pipe Flanges and Flanged FittingsB16.11 Forged Steel Fittings Socket-Welding and ThreadedB16.15 Cast Bronze Screwed FittingsB16.18 Cast Bronze Solder-Joint Pressure FittingsB16.22 Wrought Copper and Bronze Solder-Joint PressureFittingsB16.24 Bronze Flanges and Flanged FittingsB16.34 Steel Valves,Flanged and Buttweld EndsB31.1 Power Piping2.2 MSS Standards:4SP-25 Standard Marking System for Valves,Fittings,Flanges,and UnionsSP-51 150 lb Corrosion Resisting Cast Flanges and FlangedFittings2.3 ASME Standards:5ANSI/ASME PTC 39.1 Condensate Removal Devices forSteam SystemsASME Boiler and Pressure Vessel Code,Section VIII Divi-sion I,Pressure VesselsASME Boiler and Pressure Vessel Code,Section IX,W el-ding and Brazing Qualifications3.Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 cold condensate capacity(QC)maximum mass ofcondensate that the steam trap/drain can discharge in 1 h at agiven pressure and temperature,the trap/drain being fully open(lb/h(kg/h).3.1.2 draindevice having no moving parts permitting thedischarge of fluids at a fixed or adjustable rate.3.1.3 hot condensate capacity(QH)maximum mass ofcondensate that a steam trap/drain can discharge in 1 h at agiven pressure and temperature(lb/h(kg/h).3.1.4 hydrostatic proof test(PTHP)test used in determin-ing maximum allowable pressure(PMA)and maximum allow-able temperature(TMA)(lb/in.2(kg mm2).3.1.5 maximum allowable pressure(PMA)maximum pres-sure that the shell of the steam trap/drain can withstandpermanently at a given temperature(lb/in.2(kg mm2).3.1.6 maximum allowable temperature(TMA)maximumtemperature to which the shell of the steam trap/drain can beraised permanently(F(C).3.1.7 maximum differential pressure(PMX)maximumdifference between operating pressure and operating backpressure(lb/in.2(kg mm2).1This specification is under the jurisdiction of ASTM Committee F25 on Shipsand Marine Technology and is the direct responsibility of Subcommittee F25.11 onMachinery and Piping Systems.Current edition approved May 1,2015.Published June 2015.Originallyapproved in 1988.Last previous edition approved in 2010 as F1139 88(2010).DOI:10.1520/F1139-88R15.2This specification was developed from Fluid Controls Institute Standards,69-1Pressure Rating Standards for Steam Traps and 85-1 Standard Production Test forSteam Traps.3Available from American National Standards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036,http:/www.ansi.org.4Available from Manufacturers Standardization Society of the Valve and FittingsIndustry(MSS),127 Park St.,NE,Vienna,VA 22180-4602,http:/www.mss-.5Available from American Society of Mechanical Engineers(ASME),ASMEInternational Headquarters,Two Park Ave.,New York,NY 10016-5990,http:/www.asme.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 3.1.8 maximumoperatingbackpressure(PMOB)maximum permissible pressure measured at the outlet of thesteam trap/drain allowing correct functioning(lb/in.2(kg mm2).3.1.9 maximum operating pressure(PMO)pressure forwhich a steam trap/drain is rated by the manufacturer.3.1.9.1 DiscussionThis pressure is normally a function ofthe limitations related to the internal mechanism of the steamtrap/drain(lb/in.2(kg mm2).3.1.10 maximum test pressure(PTMX)maximum pressureapplied to the steam trap/drain under test including its internalmechanism(lb/in.2(kg mm2).3.1.11 minimum differential pressure(PMN)minimumdifference between operating pressure and operating backpressure(lb/in.2(kgmm2).3.1.12 operating back pressure(POB)pressure measuredat the outlet of the steam trap/drain under