Briggs 1.6 Gallon Vacu. Home › Forums › Archives › Old Bulletin Board Archives › Briggs 1.6 Gallon Vacu. This topic has 0 replies, 1 voice, and was last updated 21 years, 8 months ago by mark thoma. Viewing 0 reply threads Author Posts 28 May 1999 at 5:08 pm #282323 mark thoma I would like to locate the company that manufactures the Briggs 1.6 gallon Vacu Flush Toilet. Can you advise how I might contact this company.Thank you. Author Posts Viewing 0 reply threads The forum ‘Old Bulletin Board Archives’ is closed to new topics and replies.