| 摘要 |
The contact zone 4 of the valve with the wheel rim has a ballooned profile 41 in its upper part, then a tangent plane profile 42 in its lower part. Its foot 7 has a swelling 70 forming a nose 90 under the lip 6. The valve is intended for tyres without air chambers; it can be fitted to wheel rim holes of different diameter. <IMAGE>
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