Can I use an electric guitar head on a cabinet I use for my bass guitar?

I currently just have a pretty average Peavey practice amp and would like to branch out and use a stack. I already have a cabinet and a head for my bass guitar and I would like to know whether I can use my bass cabinet with an electric guitar head. Also I wouldn't mind some recommendations for a head. My budget is �200 and i am looking for a valve head. Cheers ><