GB/T 1796.2-2024 Tyre valves — Part 2: Rubber base valves
1 Scope
This document specifies the model designation, structural types, types, structural dimensions and materials of components, appearance, rubber base edge thickness, maximum pressure of use, sealing performance, adhesion strength and adhesion rate between rubber and metal stem, test methods, inspection rules, marking, packaging and storage of rubber base valves (hereinafter referred to as "valves").
This document is applicable to the manufacture of valves for tubes of trucks, industrial vehicles, agricultural vehicles, engineering machinery, motorcycles, electric vehicles and cycles.
This document is not applicable to the valves for aircraft tyres.
2 Normative references
The following documents contain requirements which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 1796.6 Tyre valves - Part 6: Cores
GB/T 1796.7 Tyre valves - Part 7: Components
GB/T 2828.1-2012 Sampling procedures for inspection by attributes - Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection
GB/T 9764 Tyre valve core chambers
GB/T 9765 Tyre valve threads
GB/T 9766.2 Test method for tyre valves - Part 2: Rubber base valves test methods
GB/T 12839 Terms and definitions of tyre valves
GB/T 21285 Tubes valves - Identification system for valves and their components
3 Terms and definitions
For the purpose of this document, the terms and definitions given in GB/T 12839 apply.
4 Model designation
The model designations of products shall meet the requirements of GB/T 21285, and see Annex A for the comparison of model designations in this document and foreign standards.
Contents
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Model designation
5 Structural types
6 Types, structural dimensions and materials of components
7 Appearance
8 Rubber base edge thickness
9 Maximum pressure of use
10 Sealing property
11 Adhesion strength and adhesion rate between rubber and metal stem
12 Test methods
13 Inspection rules
14 Marking, packaging and storage
Annex A (Informative) Comparison between model designations in this document and foreign standards
