2-1/2" Wafer Check Cast Steel /Stainless Steel 150/300# design Dual Disc with Viton Seat Titan CV44CSV2 1 2" Wafer Check Cast Steel Stainless Steel 150 300# design Dual Disc with Viton Seat Titan CV44CSV Resilient Soft Seats Minimal Head Loss Quick Closure to Reduce Water Hammer VITON PROPERTIES: Offers a broad range of chemical resistance and excellent heat resistance. Good mechanical properties and compression set resistance. Often used in applications where nothing else will work. Fair low temperature resistance and limited hot water resistance and