nuflo Magic Butterfly valve features a new conceptive non-fixed seat that is in contact with disc more securely and is released from disc prior to its rotation by  pneumatic control.

The unique design feature provides a  superior sealing effect since the seat  is tightened to the disc by spring return forces at closed condition.
And it also provides a long lasting seat life and low operational torque by eliminating an undesirable friction forces occurred at disc rotation.