Designation:F1546−96(Reapproved2012)´1AnAmericanNationalStandardStandardSpecificationforFireHoseNozzles1ThisstandardisissuedunderthefixeddesignationF1546;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ε1NOTE—DesignationwaseditoriallychangedtoconformwithunitsofmeasurementstatementinNovember2013.1.Scope1.1Thisspecificationcoversthedesign,manufacture,andtestingoffirehosenozzlesintendedforusewithseawaterorfreshwatereitherinstraightstreamoradjustablespraypatterns.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.2.ReferencedDocuments2.1ASTMStandards:2A313/A313MSpecificationforStainlessSteelSpringWireA580/A580MSpecificationforStainlessSteelWireA582/A582MSpecificationforFree-MachiningStainlessSteelBarsB117PracticeforOperatingSaltSpray(Fog)ApparatusD395TestMethodsforRubberProperty—CompressionSetD412TestMethodsforVulcanizedRubberandThermoplas-ticElastomers—TensionD572TestMethodforRubber—DeteriorationbyHeatandOxygenD1193SpecificationforReagentWater2.2NFPAStandards:3NFPA1963StandardsforScrewThreadsandGasketsforFireHoseConnections3.Terminology3.1Definitions:3.1.1ballshut-off—aspraynozzleconfigurationthatstopstheflowofwaterthroughthenozzlebyrotatingtheballthroughwhichthewaterflowssothatthepassagenolongeralignswiththenozzleflowpassage.3.1.2breakapart—afeaturethatallowsthenozzletiptobedisconnectedfromthenozzlebodybyvirtueofacouplingidenticaltothatonthehoseendofthenozzle.3.1.3constantflowratespraynozzle—anadjustablepatternnozzleinwhichtheflowisdeliveredatadesignednozzlepressure.Attheratedpressure,thenozzlewilldeliveraconstantflowratefromstraightstreamthroughawideanglepattern.Thisisaccomplishedbymaintainingaconstantorificesizeduringflowpatternadjustment.3.1.4constantpressure(automatic)spraynozzle—anad-justablepatternnozzleinwhichthepressureremainsconstantth...
