HERSEY 2 10" REPAIR KIT

Model Overview

The Hersey model 2 is a double check assembly. Production of this unit was begun approximately in 1975 and was discontinued in 2004. It has a cast iron body. From 1977-1993 the cast iron bodies were galvanized coated. From 1992-1993 the HP painted epoxy was available as an option to the galvanizing. In 1993 a fused epoxy coating became the standard. Check seats are replaceable. A seat removal tool is needed to replace the check seats. Check springs are contained when the cover is removed. In 1988 the end to end body dimension on sizes 3" and 4" were changed. The earlier model of the 3" was 5/8" shorter. The earlier model of the 4" was 1" shorter. The repair kits are the same. The checks are a similar design as used in the 6CM assembly. Most internal hardware parts are made of bronze. In 1993 the design of the check cover was changed. Before 1993 a gasket was used to seal the check covers to the body. After 1993 an O-ring seal was used on the check covers.