How to fix stripped threads on RV water heater anode RV Travel
2019 7 11 nbsp 0183 32 To use a standard tap may actually remove portions of the existing threads as well as cut new threads something to be avoided in a water heater tank fitting You ll need a 3 4 inch NPT thread chaser since the replacement anode will likely have a tapered pipe thread As a last resort using a 3 4 inch NPT standard tap will work if you re