Standard No.:	TB/T 2951-2009
English Name:	Air Controlling Valve of Railway Wagon
Chinese Name:	铁道货车空气控制阀
Professional Classification:	TB    Professional Standard - Railway Transport
Issued by:	Ministry of Railways
Issued on:	2009-11-11
Implemented on:	2010-5-1
Status:	superseded
Superseded by:	TB/T 2951.2-2018
Superseded on:	2019-2-1
Superseding:	TB/T 2951-1999
Language:	English
File Format:	PDF
Word Count:	9000 words
Price(USD):	180.0
Delivery:	via email in 1 business day

1 Scope of Application This standard specifies technical requirements, test, inspection rules, marking and packaging, storage and transportation of air controlling valve of railway wagon (hereinafter referred to as "controlling valve"). This standard is applicable to two-pressure direct-action 120 series air controlling valve of newly-made railway wagon. 2 Normative References The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments (excluding corrections), or revisions, of any of these publications do not apply to this standard. However parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. GB/T 1173-1995 Casting Aluminum Alloys GB/T 1176-1987 Specification for Cast Copper Alloys (neq ISO 1338:1997) GB/T 1184-1996 Geometrical Tolerancing -Geometrical Tolerance for Features without Individual Tolerance Indications (eqv ISO 2768-2:1989) GB/T 1348-1988 Spheroidal Graphite Iron Castings GB/T 1804-2000 General Tolerances - Tolerances for Linear and Angular Dimensions without Individual Tolerance Indications"(eqv ISO 2768-1:1989) GB/T 4237-2007 Hot Rolled Stainless Steel Plate Sheet and Strip GB/T 6414-1999 Castings - System of Dimensional Tolerances and Machining Allowances (eqv ISO 8062:1994) GB/T 10125-1997 Corrosion Tests in Artificial Atmospheres - Salt Spray Test (eqv ISO 9227:1990) GB/T 15114-1994 Aluminum Alloy Die Castings GB/T 15115-1994 Die Casting Aluminum Alloys GB/T 16947-1997 Helical Springs Fatigue Testing STANDARD GB/T 18684-2002 Specifications of Zinc/Chromate Coatings TB/T 66-1995 Technical Specification for Brake Spring of Rolling Stock TB/T 1492-2002 Test Method of Single Car for Railway Vehicle Brake TB/T 2206-1991 103/104 Type Air Distributor Rubber Piece for Vehicles 3 Composition of Controlling Valve Controlling valve is composed of main valve (including semiautomatic release valve), emergency valve and mid-body.

Foreword i 1 Scope of Application 2 Normative References 3 Composition of Controlling Valve 4 Performance Requirements 5 Technical Requirements 6 Test 7 Inspection Rules 8 Marking, Packaging, Storage and Transportation Annex A (Normative) Bench Test Method of Controlling Valve Annex B (Normative) Method to Test Performance of Special Test Bench