Assuming it's new, and clean, you're fine.
I have yet to clean a dedicated gas line.
While sanitization is quite important, it's not the rocket science I was led to believe it was. I spent hours scrubbing equipment, washing my hands, protecting the wort - All the while trying not to look at the beer funny. It's all over-rated. Keep your stuff clean and sanitized, and you'll be fine.
The nasties aren't ninjas. They're predictable - And basic due-diligence will keep your beer in the clear.