Sounds like advertising hype to me. "Our stove uses a pump to pressurize the fuel." (The pressure moves the fuel down the line from the remote bottle to fill the priming cup; you still have to prime the vaporizing tube, though.) "Our stove is self-pressurizing." (You fill the priming cup manually, and the heat from priming the vaporizing tube also pressurizes the attached tank below the priming cup.)

If you don't want to change the product, change the claim. <img src="/forums/images/graemlins/tongue.gif" alt="" />

(By the way, if I ever need another white gas stove, it will be a Svea. They're like Oreos: once you get it right, there's no reason to mess with it. Ever. But they will anyhow.)