This model is a double check assembly. This model was produced from 1978-1997. The assembly is similar in design to the 805Y. The only difference was the body material. The 865 used a glass fiber reinforced nylon instead of bronze.
Common repair parts are a very small subset of the 10,000 plus items BAVCO stocks.
Please feel free to contact us direct at 800-458-3492 for pricing on items not listed
or backflow prevention devices.