SASO 118 Liquefied Petroleum Gas Cyclinders for Domestic Use

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1、SASO118METHODSOFTESTINGVALVESFORLIQUEFIEDPETROLEUMGASCYLINDERSFORDOMESTICUSE.METHODSOFTESTINGVALVESFORLIQUEFIEDPETROLEUMGASCYLINDERSFORDOMESTICUSE.ICS:DateofSASO-BoardofDirector’sApproval:DateofPublicationintheOfficialGazette:DateofEnforcementofthisStandard:SAUDIARABIANSTANDARDSASO118/1

2、998METHODSOFTESTINGVALVESFORLIQUEFIEDPETROLEUMGASCYLINDERSFORDOMESTICUSE.1.SCOPEANDFIELDOFAPPLICATIONThisstandardisconcernedwithmethodsoftestingvalvesforliquefiedpetroleumgascylindersfordomesticuse.2.COMPLEMENTARYREFERENCES2.1SSA121/1995"LowPressureRegulatorsforValvesofLiquefiedPetroleu

3、mGasCylinders".2.2SSA119/1998“ValvesforLPGCylindersforDomesticUse.2.3SSA......./..........”Non-metallicMaterialsUsedwithLPGandTheirMethodsofTest”.3.MEASURINGINSTRUMENTSThefollowingmeasuringinstrumentsshallbeused:3.1Dimensionmeasuringinstrumentstoanaccuracyof±0.01mm.3.2Pressuremeasuringi

4、nstruments:3.2.1Watermanometer,toanaccuracyof±0.5mmwater.3.2.2Dialpressuregauge,toanaccuracyof±25kPa(~±0.25kgf/cm²).3.3Torquedevices,toanaccuracyof±0.1N.m(±0.01kgf.m).3.4Temperaturemeasuringinstruments,toanaccuracyof±0.1oC.3.5Timemeasuringinstruments,toanaccuracyof±0.01minuteperhour.4.A

5、PPARATUSTheapparatusshowninFig.(1)shallbeused.Itconsistsofthefollowing:4.1Pressurevessel(r)Itshallbeconnectedtopressurizedairsupplyof0.5bar,3barand21bar,withenoughcapacitytofixtherequiredpressuretoaflowrateof5m³/min,andsurroundedwithatightcasingtokeepitstemperatureatroomtemperature,65oC

6、and–5oC.4.2Operatingshaft(e).4.3Cylindervalve(v).4.4Pressuresourceandcontrolapparatus(a).4.5Doubleactingvalve(d).1SAUDIARABIANSTANDARDSASO118/19984.6Bubblescompartment(b).4.7Heatcompartment(h),heatingandcoolingexhaust(x),movablelid(m).4.8Pressuregauge(P),flowmeter(f),connectionindicator

7、(i).5.VISUALINSPECTION5.1Eachvalveshallbevisuallyexaminedtocheckforanydamageorapparentdefectinmanufacture.5.2Themarkingonthevalveshallbechecked.6.DIMENSIONSMEASUREMENT6.1Thediameterofthecirclewhichtouchesthehandwheel'scontour(fortype"A")shallbemeasuredusingsuitablemeasuringinst