1 Scope
This standard specifies the type, basic dimension, technical requirements, test methods, inspection rules as well as marking and packaging, etc. of semi-spherical angle cock for locomotive.
It is applicable to the manufacture and inspection of DN32 semi-spherical angle cock (hereinafter referred to as angle cock) that belongs to air braking system and is used for the connection of locomotive and vehicle.
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 528 Rubber, Vulcanized or Thermoplastic - Determination of Tensile Stress-strain Properties (GB/T 528-2009, ISO 37:2005, IDT)
GB/T 531.1 Rubber - Determination of Indentation Hardness by Means of Pocket Hardness Meters (GB/T 531.1-2008, ISO 7619-1:2004, IDT)
GB/T 1176 Specification for Cast Copper Alloys (GB/T 1176-1987, neq ISO 1338:1977)
GB/T 1184-1996 Geometrical Tolerancing - Geometrical Tolerance for Features without Individual Tolerance Indications (eqv ISO 2768-2:1989)
GB/T 1682 Method of Test for Temperature Limit of Brittleness for Vulcanized Rubbers (GB/T 1682-1994, eqv ISO 812:1991)
GB/T 1690 Rubber, Vulcanized or Thermoplastic - Determination of the Effect of Liquids (GB/T 1690-2006, ISO 1817:2005, MOD)
GB/T 1804-2000 General Tolerances - Tolerances for Linear and Angular Dimensions without Individual Tolerance Indications (eqv ISO 2768-1:1989)
GB/T 3512 Rubber, Vulcanized or thermoplastic - Accelerated Ageing and Heat Resistance Tests - Air-oven Method (GB/T 3512-2001, eqv ISO 188:1998)
GB/T 3672.1-2002 Rubber - Tolerances of Products - Part 1: Dimensional Tolerances (ISO 3302-1:1996, IDT)
GB/T 6414-1999 Castings - System of Dimensional Tolerances and Machining Allowances (eqv ISO 8062:1994)
GB/T 7306.2-2000 Pipe Threads with 55 Degree Thread Angle Where Pressure-tight Joints are Made on the Threads - Part 2: Taper Internal and External Threads (eqv ISO 7-1:1994)
GB/T 7759 Rubber, Vulcanized or Thermoplastic - Determination of Compression Set at Ambient Elevated or Low Temperatures (GB/T 7759-1996, eqv ISO 815:1991)
GB/T 10125-1997 Corrosion Tests in Artificial Atmospheres - Salt Spray Tests (neq, ISO 9227:1990)
GB/T 11352 Carbon Steel Castings for General Engineering Purpose (GB/T 11352-2009, ISO 3755:1991, Cast Carbon Steels for General Engineering Purposes, ISO 4990:2003, Steel Castings - General Technical Delivery Requirements, MOD)
GB/T 12230 General Purpose Industrial Valves - Specification of Stainless Steel Castings
GB/T 21563-2008 Railway Applications - Rolling Stock Equipment - Shock and Vibration Tests (IEC 61373:1999, IDT)
HG/T 3866-2008 Vulcanized Rubber - Determination of Coefficient of Cold Resistance under Compression
3 Type and Basic Dimension
See Figure 1 for the type and basic dimension of angle cock.
Foreword i
1 Scope
2 Normative References
3 Type and Basic Dimension
4 Technical Requirements
5 Test Methods
6 Inspection Rules
7 Marking, Packaging, Transportation and Storage
Annex A (Normative) Exhaust Test Method of Angle Cock
Annex B (Normative) Type and Dimension of Dust-proof Blocking
