This pressure relief valve is made in Italy by AEB, one of the worlds largest producers or Cornelius style kegs used in homebrewing. These are slightly more than the plastic versions, which are made in China now, but well worth the small difference in price. They will give you years of service (probably a lifetime!). We highly recommend these valves. They will fit virtually any keg on the market including, AEB, Cornelius, Firestone, AMCYL and many others.