Pneumatically Actuated Butterfly Valve Action Double Acting Body Material Ductile Iron Pipe Size 2 1/2 in Max Water Pressure 200 psi Seat Material EPDM Number of Bolt Holes 4 Lug Dia 5/8-11 in Standards API 609 Air Inlet Pressure 80 psi Bolt Circle Dia 5 1/2 in Product Type Pneumatically Actuated Butterfly Valve