Composition Casing: Aluminiym, cast iron Diaphragm: Santrophene, Hytrel, Teflon, Viton, EPDM, Buna-N Ball: Santoprene, Hytrel,Teflon, Viton, Stainless steel, Ceramic Ball seat; Santoprene, Hytrel,Teflon, Stainless steel Center Block: PP, Aluminium, Stainlees steel Weight PP/POMpump: 20kg PVDF pump: 20kg Technical Parameters Suction lift (mwc): Dry: 5/ Wet: 8 Max particle diameter (mm): 5 Suction and discharge size (in): 1 1/2 Air inlet (in): 1/2 Max flow (l/min): 358 Max head (m): 84 Max air inlet pressure (bar): 8.4