Pneumatically Actuated Butterfly Valve Action Spring Return Body Material Cast Iron Pipe Size 2 in Max Water Pressure 150 psi Seat Material EPDM Number of Bolt Holes 4 Lug Dia 5/8-11 in Air Inlet Pressure 80 psi Bolt Circle Dia 4 3/4 in Product Type Pneumatically Actuated Butterfly Valve