沧州盛世伟业汽车配件有限公司

关于气门嘴的介绍

美式嘴,英文叫做“Schrader valve”,主要应用在越野车,山地车用美嘴的多些(一般汽车上用的是美嘴)。优点:美嘴是靠气嘴芯内部的小弹簧拉动密封芯来密封的,密封的好坏与弹簧及密封垫的质量有很大关系, 且打气方便。 法式嘴,英文叫做“presta valve”,主要应用在高档自行车以及管带(tubulars)上因公路车内胎气压高于越野车内胎气压,公路车用法嘴的多些,(法嘴一般比较长,比美嘴细些)。优点:法嘴的气密性要好于美嘴,上边的小环拧的越紧,里边的密封圈就拉的越紧,自然气嘴的密封也就越好。耐高压,漏气线性较平滑,气嘴基础较细,重量轻,气嘴直径小,对圈的强度影响少,可以使用在19C尺寸的内胎或窄圈。缺点:手动锁死气门,价格高!打气麻烦,要先拧松小环打气,打完后拧紧。

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