A spring (66) is captured in compression between each cap and an associated blowhead chuck biasing the blowhead chuck in a direction out of the lateral passage and away from the cap.
弹簧（66）以压缩方式俘获于每个盖子和相关联的吹气头夹盘之间，沿着离开横向通路和远离盖子的方向偏置吹气头夹盘。
A blowhead chuck (44) is removably received in a first end of each lateral passage and a cap (60) is threaded into the second end of each lateral passage spaced from the associated blowhead chuck.
吹气头夹盘（44）可拆卸地容纳于每个横向通路的第一端，并且盖子（60）螺纹接入每个横向通路的第二端，与相关联的吹气头夹盘相隔开。
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