Regulator Barb

[jmhbutler]

While adding a manifold to my gas lines today I broke the barb on my regulator. Any idea if this is this the replacement I need?

http://www.lowes.ca/brass-fittings/...993&term=barb&linkloc=searchProductItemsImage

Also, is Starsan okay to use on brass for short periods?

Thanks guys!