It is to be note that these pipings are only included as an example and should be considered as optional features of the invention due to the variety of applications which may be given to the equipment, such as: vacuum pump, gas compressor, fluid pump, or internal combustion engines and, therefore, {HEAD ~ requirements} are different for {TAIL ~ each case} 
It is to be note that these pipings are only included as an example and should be considered as optional features of the invention due to the variety of applications which may be given to the equipment , such as : vacuum pump , gas compressor , fluid pump , or internal combustion engines and , therefore , { HEAD ~ requirements } are different for { TAIL ~ each case }
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