These air operated, diaphragm pumps are self priming and safe dry running. Made of high quality materials, and superbly engineered, has a range of features, including: suction/discharge side BSP 3/8 " female, and an air inlet/outlet BSP 1/8 " female, and can handle solids up to 4mm. The pump is housed in a durable PP, PTFE frame, and the diaphragm consists of EPDM, FKM, NBR and PTFE., and as such can withstand significant temperatures ranging from 60 -100 degree Celsius due to the materials used in construction. A hard working machine that you can depend on for the duration of its working life.