Ball Ceramic ball suitable for strong acid and alkali, chemical liquids and slurry of higher viscosity and strength . Teflon ball suitable for strong acid and alkali and other chemical liquids of high flow ability Rubber ball suitable for waste water, waste oil Stainless steel ball suitable for slurry of higher viscosity and strength ceramic slurry ,paint and ect . Ball Seat PTFE seat suitable for strong acid and alkali chemical materials. Viton seat suitable for acid and alkali liquids ,with good sealing performance ,including oil resistant fluorine rubber and  temperature resistant fluorine rubber. Neoprene rubber seat suitable for slight acid and alkali liquids . Buna-N seat suitable for transporting oily materials. Diaphragm Buna-N Diaphragm suitable for transporting oily materials ,with good fatigue strength Neoprene Rubber Diaphragm suitable for slight acid and alkali liquids ,conveying slurry ,waste water and ect. Viton Diaphragm suitable for acid and alkali chemical materials and liquids of higher temperature. EPDM Diaphragm suitable for slight and alkali liquids with aging resistance Teflon Diaphragm suitable for strong acid and alkali chemical materials, to be used together with rubber diaphragm Hytrel diaphragm good anti –abrasion ,can replace Buna-N, Apply to the majority of the neutral O-ring Viton O-Ring suitable for acid and alkali PTFE O-Ring suitable for strong acid and alkali chemical materials Teflon capsuled O-ring suitable for corrosive and abrasive Fluids All Material Ball All Material Ball Seat All Material Diapgragm All Material O-Ring