它由分配器本体、旋转阀心、定位轮、定位爪、油缸等组成。

The utility model is formed by a distributor body, a rotary valve core, a locating wheel, a locating detent, an oil cylinder and so on.

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一般优质龙头采用的是进口陶瓷阀心，以意大利和德国的为佳。

General and high grade bibcock USES is the import ceramic valve heart, with Italy and Germany for beautiful.

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油温升高使阀心受热膨胀，阀套与阀心间的配合间隙减小， 阀心有可能被卡死在阀套里。

The fit clearance between spool and sleeve decreases because of the thermal expansion of the spool caused by temperature increment, so it is possible that spool is deadlocked in sleeve.

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