1、SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirelyvoluntary, and its applicability and suitability for any particular use, including any patent infringement arising therefro
2、m, is the sole responsibility of the user.”SAE reviews each technical report at least every five years at which time it may be reaffirmed, revised, or cancelled. SAE invites your written comments and suggestions.QUESTIONS REGARDING THIS DOCUMENT: (412) 772-8512 FAX: (412) 776-0243TO PLACE A DOCUMENT
3、 ORDER; (412) 776-4970 FAX: (412) 776-0790Copyright 1997 Society of Automotive Engineers, Inc.All rights reserved. Printed in U.S.A.SURFACEVEHICLE400 Commonwealth Drive, Warrendale, PA 15096-0001STANDARDSubmitted for recognition as an American National StandardJ1205REV.APR97Issued 1977-09Revised 199
4、7-04Superseding J1205 AUG78PERFORMANCE REQUIREMENTS FOR SNAP-IN TUBELESS TIRE VALVES1. ScopeThis SAE Standard for snap-in tubeless tire valves was developed by the qualified engineers in thetire, valve, and automotive industries. It is based upon sound engineering principles, supported by laboratory
5、testing and field experience, to establish acceptable levels of performance criteria for valves.1.1 PurposeThe purpose of this document is to define performance values for the test procedure of SAE J1206,Methods for Testing Snap-In Tubeless Tire Valves (April 1997).2. References2.1 Applicable Public
6、ationsThe following publications form a part of this specification to the extent specifiedherein. Unless otherwise indicated, the latest issue of SAE publications shall apply.2.1.1 SAE PUBLICATIONAvailable from SAE, 400 Commonwealth Drive, Warrendale, PA 15096-0001.SAE J1206Methods for Testing Snap-
7、In Tubeless Tire Valves2.1.2 ASTM PUBLICATIONAvailable from ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959.ASTM D 1171Test Method for Rubber DeteriorationSurface Ozone Cracking Outdoors or Chamber(Triangular Specimens)2.1.3 TIRE AND RIM ASSOCIATION PUBLICATIONAvailable from Tire and R
8、im Association, 175 Montrose WestAvenue, Suite 150, Copley, OH 44321.3. GeneralParagraph numbers of Section 4, Test Values, of this document correspond to Section 4, TestMethods, of SAE J1206.4. Test Values4.1 AdhesionAny interface separation between metal and rubber (or cement if used) less than 6.
9、4 x 6.4 mm(0.25 0.25 in) in total area shall be considered acceptable.4.2 Hardness4.2.1 UNUSED VALVESHardness values of 6070 Shore A durometer are acceptable.SAE J1205 Revised APR97-2-4.2.2 AGED VALVESAn increase of 10% maximum over the values obtained in 4.2.1 of this document, but limitedto a maxi
10、mum hardness values of 75 Shore A durometer is acceptable.4.3 Valve Core SealIn all of these tests (see 4.3.1, 4.3.2, and 4.3.3), leakage at a rate of 0.2 cc/min or less isconsidered acceptable. (This rate approximates 1 bubble/min in water with valve mouth down.)4.4 Valve to Rim Seal4.4.1 LOW TEMPE
11、RATURELeakage at a rate of 0.2 cc/min or less is considered acceptable at the rim seal before,during, or after revolving and flexing the valve.4.4.2 HIGH TEMPERATURELeakage at a rate of 0.2 cc/min or less is considered acceptable at the rim seal before,during, or after revolving and flexing the valv
12、e.4.5 Installation4.5.1 FORCE TO SEATForce to seat shall not exceed 40 kg (90 lb) for 11.3 mm (0.453 in) hole or 45 kg (100 lb)for 15.7 (0.625 in) hole.4.5.2 FORCE TO PULL OUTA minimum force of 55 kg (125 lb) for valves designed to fit a nominal 11.3 mm(0.453 in) hole and 55 kg (125 lb) for valves d
13、esigned to fit a nominal 15.7 mm (0.625 in) hole is acceptableto break the base or to pull the valve out of the hole.4.6 BurstA valve which withstands 3X the maximum rated pressure (as shown in the Tire and Rim Associationspublications) for 2 min is acceptable. 4.7 Ozone ResistanceThe valve rubber c
14、over shall exhibit resistance to ozone equivalent to a zero rating at 5Xmagnification per ASTM D 1171.4.8 Valve Core Opening or Unsealing PressureIn test procedure, see 4.8, opening (or unsealing) pressure ofless than 275 kPa (40 psig) is considered a failure.PREPARED BY THE SAE HIGHWAY TIRE FORUM C
15、OMMITTEESAE J1205 Revised APR97RationaleThe measurements in the revised sections were made to harmonize with ISO and to reflectcurrent technology in the valve industry.Relationship of SAE Standard to ISO StandardNot applicable.ApplicationThis SAE Standard for snap-in tubeless tire valves was develop
16、ed by qualified engineers in thetire, valve, and automotive industries. It is based upon sound engineering principles, supported bylaboratory testing and field experience, to establish acceptable levels of performance criteria for valves.Reference SectionSAE J1206Methods for Testing Snap-In Tubeless Tire ValvesASTM D 1171Test Method for Rubber DeteriorationSurface Ozone Cracking Outdoors or Chamber(Triangular Specimens)Tire and Rim Association Publications (various)Developed by the SAE Highway Tire Forum Committee
