This part of GB/T 1796 specifies the terms and definitions, model designation, structural types, types, structural dimensions and materials of components, appearance, maximum pressure of use, sealing performance, assembly torque of hex nut and valve stem, test methods, inspection rules, marking, packaging and storage of clamp-in valves (hereinafter referred to as "valves").
This part is applicable to valves for tubes of motorcycles and cycles.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies.
GB 1796.6 Tyre valves - Part 6: Cores
GB 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 9764 Tyre valve core chambers
GB 9765 Tyre valve threads
GB/T 9766.1 Test method for tyre valves - Part 1: Test method for tube clamp-in valves
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 specified in GB/T 12839 apply.
4 Model designation
The model designation of the product shall meet the requirements of GB/T 21285. See Annex A for the comparison of models between this part and foreign standard.
5 Structural type
The structural types of valves shall meet the requirements of Table 1 and Figures 1~4. All linear dimensions in this part are expressed in millimeters.
