The present invention provides {HEAD ~ a lubricating apparatus} for ball valves which ensures {TAIL ~ a constant supply} of lubricant to the valve and its working parts which, consequently, reduces chances of valve seizure and damage due to corrosion 
ensures
The present invention provides { HEAD ~ a lubricating apparatus } for ball valves which ensures { TAIL ~ a constant supply } of lubricant to the valve and its working parts which , consequently , reduces chances of valve seizure and damage due to corrosion
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