Customer called in about needing to replace PRV. Pipes making rattling noises when water is being used. Customer just had his meter changed couple of days ago due to this and city told him probably PRV that needs to be replaced as well. Quoted customer repairs and customer opted to go with PRV replacement. Went ahead and replaced main ball valve as a courtesy and installed new PRV. Also installed new boiler drain after PRV to check water pressure. Set water pressure to 75psi. Checked for leaks and no leaks detected. 1 year warranty on repairs.