Buy the 2015 Old Farmer's Almanac!
Yes, you can use the pressureYes, you can use the pressure canner vessel, but remove all the removable plugs and stoppers in the top of it, and use it as a boiling water bath canner--in other words do not build up pressure in it. Processing time would be the same as a BWB canner. You do not need to go out and buy a separate pot just to do the occasional boiling water canning. The other answer is correct, you cannot process under pressure, but you can use the pot to boil the water in and the lid to cover it, just don't seal it up.

2015 Garden Calendar2015 Weather Watcher's Calendar2015 Recipes Calendar2015 Engagement Calendar 2015 Everyday Calendar2015 Country CalendarNew Year Cross StitchLobster Rope Doormats