Crompton Greaves Drainage Submersible Pump STPM12 (1PH) (1HP) is one of the sought after drainage submersible pumps. The pump is known for efficient functioning and whole other modern features. The impellers of the pump are of vortex type. The motor housing is made of stainless steel. The pump is manufactured in a manner that it can handle solid up to 35mm. Various components of the pump are made of varied materials like � cable is made of PVC (Poly Vinyl Chloride), motor cover, oil chamber, impeller and pump casing are made of cast iron.