This is a NEW Butterfly Valve. It measures 10 inches across the opening.
Keystone Series 221 Butterfly Valves feature rugged quality
construction. Used for a wide range of materials. Maximum flow area for
use in on/off as well as throttling control applications. Standard seat
is EPDM with Buna available (both FDA rated). The bonded seat
is designed to completely isolate the valve body parts from the liquid.
Rounded, hand polished disc and hub edge give full concentric seating
without seat obstruction, providing maximum seat life.