GB/T 12839-2020 in English
VALIDTerms and definitions of tyre valves
- Issued on:2020-03-06
- Implemented on:2021-02-01
- File Format:PDF
- Delivery:Via email within 5 business days
$476.00
| Standard No: | GB/T 12839-2020 |
| Document status: | VALID |
| Title in English: | Terms and definitions of tyre valves |
| Title in Chinese: | 轮胎气门嘴术语及其定义 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 5 business days |
| Issued on: | 2020-03-06 |
| Implemented on: | 2021-02-01 |
| Superseding: |
GB/T 12839-2012 Terms and definitions of tyre valves
|
| Professional Classification: | GB-National Standard |
| Related Keywords: | terms tpms
new terms key technical terms tpms machinery core cavity specifications ordinary core cavity gb/t12839-2012 new content modified content deleted content • definition |
| Related Topics: | other tires.int
Mouth language tire valve GBT12839 GB/T 12839-1997 GB/T 12839-2005 GB/T 12839-2012 GB/T 12839-2020 tire American valve Valve |
《GB/T 12839-2020轮胎气门嘴术语及其定义》由TC19（全国轮胎轮辋标准化技术委员会）归口，TC19SC4（全国轮胎轮辋标准化技术委员会气门嘴分会）执行，主管部门为中国石油和化学工业联合会。
Introduction
Interpretation of the core content of the standard
Main technical changes compared with GB/T12839-2012
| New content | Modified content | Deleted content |
|---|---|---|
| • Definition of TPMS snap-on/press-on valve nozzle • Terminology of 3 types of new protective caps • 15 new terms such as ejector pin | • Refinement of tube body definition • Correction of bending angle definition • Update of 8 graphic descriptions | • Inner/outer spring valve core • Definition of 2 obsolete parts |
Analysis of key technical terms
TPMS related terms
TPMS snap-on valve: a tubeless valve that is self-sealed with the rim through an elastomer and has an integrated tire pressure monitoring interface (see Figure 13). The installation torque requirement is ≤5.8N·m.
TPMS extension tube: an extension component with signal transmission function, the tolerance of its connection thread should be controlled within the M8×0.75-6H level.
Valve classification system
| Classification dimensions | Main types | Typical applications |
|---|---|---|
| Installation method | Snap-on type/Compression type/Swing arm type | Passenger car/Engineering machinery |
| Core cavity specifications | Ordinary core cavity (Φ<4.6mm)/Large core cavity | Motorcycle/Truck |
| Structural form | Straight type/Single bend type/Multi-bend type | Special vehicles |
Implementation Suggestions
- Special attention should be paid to the machining accuracy of the TPMS valve identification ring during the production process (tolerance ±0.1mm)
- The installation torque of the protective cap should be controlled in stages: ordinary core cavity ≤3N·m, large core cavity ≤5N·m
- The new version adds the core rod head position parameter (Article 5.9) and recommends that it be included in the factory inspection items
Background of Standard Evolution
This standard adopts ISO38772:1997 in a non-equivalent manner. The main differences are:
1) Adding a valve system for electric vehicles with Chinese characteristics
2) Strengthening TPMS compatibility requirements
3) Refining the air tightness test indicators
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