Self priming pumps with self-adjustable vanes. Pump body made of cast-iron with rustproof treatment, rotor of sintered steel and vanes of acetyl resin. The pump includes a by-pass valve and a built in filter with easy access for cleaning. The pump can be mounted vertically or horizontally and has 1,8 m cable with plug. Inlet/outlet connection: 1" BSP (F) or flange coupling. Maximum suction lift: 2,5 m. Electric AC motor with IP-55 protection, allows continuous operation duty. On / off switch and fuse.