2", 3", 4", 6", 8", 10", 10X12"
The Hersey Model 1 is a double check assembly. It was produced from approximately 1950-1978. The 2" size is of a bronze body construction. The 3 - 10x12" bodies are made of galvanized cast iron. There was a modification in 1972 on the 3" and 4" size. To be sure which style you have, the serial number is needed to order some repair parts. If the serial number is after 5231063 you have the new style. This design utilizes a lead weight loaded swing check design. Seats are replaceable and a seat removal tool is needed to replace the seats. Internal hardware parts are mostly made 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.