A device used on some types of vacuum-style milking machines. The unit regulates the operation of a vaccum milking bucket. Pulsators can be prone to failure due to overfilling of a vacuum bucket, thus requiring periodic overhauls.
Pul*sa"tor (?), n. [L.]
1.
A beater; a striker.
2. Mech.
That which beats or throbs in working.
© Webster 1913.
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