In one embodiment, an apparatus for delivering gases to a semiconductor processing system includes {TAIL ~ a plurality} of gas input lines each having an inlet port and a plurality of gas output lines {HEAD ~ each} having an outlet port 
In one embodiment , an apparatus for delivering gases to a semiconductor processing system includes { TAIL ~ a plurality } of gas input lines each having an inlet port and a plurality of gas output lines { HEAD ~ each } having an outlet port
OTH OTH OTH OTH OTH OTH OTH OTH OTH 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 OTH OTH OTH OTH