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