I think those are just for the bladder...I'm not sure they'd work on the hose. I've never used them though so I'm not 100% sure.

For just a dollar more you could get another hose complete with a new bite valve:
http://www.mec.ca/Products/product_detail.jsp?PRODUCT%3C%3Eprd_id=845524442592483&FOLDER%3C%3Efolder_id=2534374302699815&bmUID=1210858197563