Our hot water heater is broken. So I took the opportunity to fix our hit water valve in the shower. I went to wrench it out and it shredded beyond belief.
Any thought how I can get this out. I need to fix this before the havoc guys come to check hot water heater and I don't want to run to Home Depot yet as I'm not sure what size valve is needed

Any thought how I can get this out. I need to fix this before the havoc guys come to check hot water heater and I don't want to run to Home Depot yet as I'm not sure what size valve is needed