Pedrollo 4SR2 submersible pumps are specifically designed for water supply from boreholes, though can alsobe used in other submersible applications in either vertical or horizontal configuration. They feature a hydraulic design that incorporates floating impellers which together with especially resistant component materials provide high resistance to sand content in the pumped water. The pump impellers and diffusers are made from technopolymer while the stage casings, top housing, suction connector, pump sleeve and shaft are made of AISI 304 stainless steel. The pump is supplied with a 1.5m tail cable.

Pumps are coupled to Pedrollo two pole sealed oil filled motor constructed principally from AISI 316 stainless steel. A QEM Control box is recommended for single phase pumps which incorporates a fused rotary switch, run indicator light, DOL starter and capacitor which can be connected directly to the mains power supply. Three phase motors require a remote starter and if irregular electrical supply is prevalent an additional quick tripping voltage sensing relay is recommended.

Enclosure Class : IP68
Insulation Class: F
Speed: 2900rpm

Pumped Liquid: Thin, clean, chemically non aggressive liquids with a maximum sand content of 150gm/m.

Max. Liquid Temperature: +35ºC.
Min. Borehole Diameter:
110 mm
Max. Immersion Depth: 


Model Motor Current (A) DN(") Dimensions (mm) Weight (kg)
kW HP 1x240V   3x415V H1 H2
4SR2/9 0.55 0.75 5     11/4 343 331 11
4SR2/12 0.75 1 6     402 356 13
4SR2/17 1.1 1.5 8   3 528 371 16
4SR2/23 1.5 2 11   5 647 396 18
4SR2/33 2.2 3 15   6 873 437 22