1、Designation:F 1546/F 1546M 96(Reapproved 2001)An American National StandardStandard Specification forFire Hose Nozzles1This standard is issued under the fixed designation F 1546/F 1546M;the number immediately following the designation indicates theyear of original adoption or,in the case of revision
2、,the year of last revision.A number in parentheses indicates the year of lastreapproval.A superscript epsilon(e)indicates an editorial change since the last revision or reapproval.1.Scope1.1 This specification covers the design,manufacture,andtesting of fire hose nozzles intended for use with sea wa
3、ter orfresh water either in straight stream or adjustable spraypatterns.1.2 The values stated in SI units are to be regarded as thestandard.2.Referenced Documents2.1 ASTM Standards:A 313/A 313M Specification for Stainless Steel SpringWire2A 580/A 580M Specification for Stainless Steel Wire2A 582/A 5
4、82MSpecification for Free-Machining StainlessSteel Bars2B 117 Practice for Operating a Salt Spray(Fog)Apparatus3D 395 Test Methods for Rubber PropertyCompressionSet4D 412 Test Methods for Vulcanized Rubber and Thermo-plastic Rubbers and Thermoplastic ElastomersTension4D 572 Test Method for Rubber De
5、terioration by Heat andOxygen4D 1193 Specification for Reagent Water52.2NFPA Standards:NFPA 1963 Standards for Screw Threads and Gaskets forFire Hose Connections63.Terminology3.1 Definitions:3.1.1 ball shut-offa spray nozzle configuration that stopsthe flow of water through the nozzle by rotating th
6、e ballthrough which the water flows so that the passage no longeraligns with the nozzle flow passage.3.1.2 break aparta feature that allows the nozzle tip to bedisconnected from the nozzle body by virtue of a couplingidentical to that on the hose end of the nozzle.3.1.3 constant flow rate spray nozz
7、lean adjustable patternnozzle in which the flow is delivered at a designed nozzlepressure.At the rated pressure,the nozzle will deliver aconstant flow rate from straight stream through a wide anglepattern.This is accomplished by maintaining a constant orificesize during flow pattern adjustment.3.1.4
8、 constant pressure(automatic)spray nozzlean ad-justable pattern nozzle in which the pressure remains constantthrough a range of flows rates.The constant pressure providesthe velocity for an effective stream reach at various flow rates.This is accomplished by means of a pressure-activated,self-adjust
9、ing orifice baffle.3.1.5 constant/select flow rate featurea nozzle feature thatallows on-site adjustment of the orifice to change the flow rateto a predetermined value.The flow rate remains constantthroughout the range of pattern selection from straight streamto wide angle spray.3.1.6 free swivel co
10、uplinga coupling between the nozzleand hose or between halves of a break-apart nozzle that iscapable of being turned readily by hand;that is,a spannerwrench is not required to tighten the coupling to preventleakage.3.1.7 flusha feature in a nozzle that allows the orifice to beopened so that small de
11、bris that might otherwise be trapped inthe nozzle,causing pattern disruptions and flow variation,canpass through.When the flush feature is engaged,the nozzlepressure will drop and the pattern will deteriorate.3.1.8 lever-type controla control in which the handleoperates along the axis of the nozzle.
12、3.1.9 pistol grip a feature usually available as an attach-ment that allows a nozzle to be held like a pistol.3.1.10 rated pressurethat pressure for which the nozzle isdesigned to operate at a specified flow rate(s).3.1.11 rotational-type controla control that rotates in aplane perpendicular to the
13、axis of the nozzle.4.Classification4.1 Marine fire hose nozzles may be classified into fourgeneral construction types,as follows:4.1.1 Type IPistol grip,lever-type control operated.1This specification is under the jurisdiction of ASTM Committee F25 on Shipsand Marine Technology and is the direct res
14、ponsibility of Subcommittee F25.07 onGeneral Requirements.Current edition approved Dec.10,1996.Published October 1997.Originallypublished as F 1546-94.Last previous edition F 1546-94.2Annual Book of ASTM Standards,Vol 01.03.3Annual Book of ASTM Standards,Vol 03.02.4Annual Book of ASTM Standards,Vol
15、09.01.5Annual Book of ASTM Standards,Vol 11.01.6NFPA 1963 may be ordered by contacting the National Fire ProtectionAssociation,Batterymarch Park,Quincy,MA 02269.1Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959,United States.4.1.2 Type IINonpistol grip,l
16、ever-type control operated.4.1.3 Type IIIBreak apart,pistol grip,lever-type controloperated.4.1.4 Type IVBreak apart,nonpistol grip,lever-type con-trol operated.4.2 Nozzle types may be subdivided into three generalclasses,as follows:4.2.1 Class IConstant flow rate.4.2.2 Class IIConstant/select flow rate.4.2.3 Class IIIConstant pressure.4.3 Classes may be subdivided into two general sizes,asfollows:4.3.1 Size 38 mm,with free swivel base.4.3.2 Size 64 mm,with free swivel base.5.Ordering Informatio
