Career
He was selected as part of the TsPK-12 Cosmonaut group in 1997. Early life and education
Valkov was born in Kamensk-Uralsky, Sverdlovsk Oblast, Russia on November 11, 1971. In 1994, he graduated from Barnaul Higher Military Air School of Pilots and subsequently became a Colonel in the Russian Air Force.
Cosmonaut career
Valkov was selected as part of the TsPK-12 group of cosmonauts to train at the Yuri Gagarin Cosmonaut Training Center in 1997.
He then completed basic training in 1999. He retired without flying in space in 2012.