[John Doe1000]

I am doing a job for a friend on her water heater; the fitting for the emergency relief valve is busted (theives) off 'flush' with the threads. The ID opening is " 5/8 inch" & the extractor set I bought only has 1/8, 1/4, 3/8, 1/2, & 3/4... there is NO 5/8 extractor. How do I get the broken off fitting out... it is cast iron (or cast something). Thank you for your prompt answer.

[speedball1]

I am doing a job for a friend on her water heater; the fitting for the emergency relief valve is busted (theives) off 'flush' with the threads. The ID opening is " 5/8 inch" & the extractor set I bought only has 1/8, 1/4, 3/8, 1/2, & 3/4...there is NO 5/8 extractor. How do I get the broken off fitting out...it is cast iron (or cast something). Thank you for your prompt answer.

Your T&P Valve's is made from cast brass.As a rule it has 3/4"threads. However, if your extractor won't fit then take a small sharp chisel and work it under the threads . Pry up and from there simply peel the threads out. Don't forget to Teflon Tape the new threads before tightening. Good luck and thank you for rating my answer. Tom

[Milo Dolezal]

Of course there is no 5/8" extractor: One of those extractors you purchsed should fit. If 1/2" is too skinny, than take hack saw and cut of first 1" from the tip. Insert it in, tap it with hammer and remove the broken threads.