1) Sanitary stainless steel butterfly valve 2) Material: 304, 316L 3) Seal (gasket): EPDM, SILICON, VITON 4) Size: 1", 1.5", 2", 2.5", 3", 4" Butterfly valve body can choose clamp, welding and Male end. The different handle of 4 position, 12 position and other style that you inquired or actuator for your wide use. Butterfly valve body and disk were all out from full machined, high polished that demanded of the high quality in the developed country around the world.