The butterfly valve has head loss characteristics of an entire bore valve. The design features a precisely crafted disc with a diameter equal to that of the pipe's bore set to Rotate it in a means of, When positioned over the bore, It seals the flow route when rotated Positioned at 90 degrees, The disc offers minimal resistance to the flow regulation It acts as a control mechanism in the form of a valve quarter turn valve. The main This valve features various methods for securing the perimeter of the disc its closed position. The simplest variation is to use an elastomeric lined bore functioning as an interference fit on the disc. The other variations are derived from offsetting the disc plane from the axis of rotation allow the disc to close against a circular face seal such that the fluid pressure increases the seal effect. The butterfly This valve has been refined to present top-tier options performance for leak-tight on, A reliable/off function across multiple tasks taking the place of the gate valve. The butterfly can function as a valve engineered as a small valve of 40mm bore and has the potential to be made for extremely large sizes upto 1600mm bore.