Butterfly Valve- Wafer, Body Material Ductile Iron ASTM A 536, Body Style Inline, Pipe Size 8 In., Max. Pressure 200 psi CWP, Temp. Range -30 Degrees to 275 Degrees F, Disc Material 316 Stainless Steel ASTM A351 CF8M, Seat Material EPDM, Number of Bolt Holes 4, API 609. Spring Return Rack and Pinion Actuator Sized for 80 PSI Air Supply