The apparatus includes a member having {TAIL ~ a channel} through which fluid flows and at least one opening of a predetermined diameter in communication with {HEAD ~ the channel} 
The apparatus includes a member having { TAIL ~ a channel } through which fluid flows and at least one opening of a predetermined diameter in communication with { HEAD ~ the channel }
OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD