Thanks for your question.
Unfortunately, we do not sell any SFG products, and I could not confidently tell you whether or not this iSi 2204001 Metal Charger Holder would fit your SFG whipped cream dispenser. That said, I did give SFG a call to try and determine the part number of the charger holder you'd need. They recommended having you give them a call directly at 1-866-944-7427.
Answered on 3/4/2013 by Andrew Call from Boulder, CO