Speroni Stainless Steel Submersible Borehole Pumps In Diameters From 131mm To 149mm. Features: 304 Stainless Steel Impellers. The Sp 6 Stainless Steel Submersible Pumps Are Made Of High Quality 304 Or 316 Corrosion Resistant Stainless Steel. The Pumps Are Designed For Efficient And Dependable Performance. The Pumps Are Light Weight And Ruggedly Constructed For Heavy Duty Applications. Speroni Stainless Steel Submersible Borehole Pumps In Diameters From 131mm To 149mm. Max Ambient Temperature (Liquid: 30 Degrees C); Sand Content: Max. 50 G/M3. Capacities Range From 10 M3/H To A Maximum Of 75 M3/H. Motors For Driving The Pumps Range From 2.2 Kw To 30 Kw