1970s space movie about a group of men freeing enslaved women

In a futuristic society where reaching the age of 30 is a death sentence, a rebellious law enforcement agent goes on the run in search of Sanctuary.

In the 23rd century, inhabitants of a domed city freely experience all of life's pleasures — but no one is allowed to live past 30. Citizens can try for a chance at being "renewed" in a civic ceremony on their 30th birthday. Escape is the only other option.