The second support apparatus rotatably supports the electrode of {HEAD ~ the welding device} in {TAIL ~ a relatively fixed relationship} to the valve body and has an elongated tubular member extending through the hole in the first support apparatus 
The second support apparatus rotatably supports the electrode of { HEAD ~ the welding device } in { TAIL ~ a relatively fixed relationship } to the valve body and has an elongated tubular member extending through the hole in the first support apparatus
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH