... "-8",larger size can be customized SS304,SS304L,SS316,SS 1.Description of sanitary butterfly valve manufacturers Description:Sanitary Butterfly Valve ... and weld end Male end, female end are available from 1/2", 3/4" up to 4". . Disk: . Made by forged ... by CNC machine. . Material grade: . AISI304, AISI316L . Size range: . From 1/2", 3/4" up to 4". . Seal(Gasket): . EPDM, SILICON ...