B5121E250L-C Dixon Valve 2-1/2" Industrial Butterfly Valve - Lug Type - Cast Iron Body - Nickel Plated Ductile Iron Disc - EPDM Seat - Multi-Position HandleWhat are the Features? Installs between standard ANSI Class 150# flanges. ISO 5211 drive shaft for easy automation. Seat backing ring ensures blowout proof service. No taper pins. Field repairable Seats are replaceable. What are the Specifications? Conforms to MSS SP 67, MSS SP 25, API 609 Valve Seating Torque (in. lbs.) Size Standard Disc at Pressure Differential (? P) Size 50 P 100 P 150 P 200 P 1" 1 1 2" 80 95 100 105 2" 99 105 110 116 2 1 2" 146