Patents Assigned to AFA-TEC S.r.l.
  • Condensate drainage for gaseous fuel fired condensation boilers
    Patent number: 5146947
    Abstract: A condensate drainage device employed as a safety device for preventing the discharge gases produced by combustion from flowing out through the condensate drainage conduit, in condensation boiler apparatuses.
    Type: Grant
    Filed: July 9, 1991
    Date of Patent: September 15, 1992
    Assignee: AFA-TEC S.r.l.
    Inventor: Gianni Vetrini