4" borehole multistage pump entirely made of stainless steel AISI 304. The smooth surface of the impellers and diffusers offer an improved efficiency, and reliability factor. Applications include clean water extraction from boreholes, pressure boosting for domestic, farming and industrial applications. Installation can be horizontal as well as vertical. The 4BHS can be fitted to any NEMA standard motor. Comes in two versions: W4BHS with water-bath motor, O4BHS with oil-bath motor.
• Maximum immersion: 150 m • Maximum liquid temperature: 30°C • Maximum sand content: 50 ppm
• Casing and pump bracket in stainless steel • Radial bearing, axial thrust bearing and friction ring in tungsten carbide • Suction and discharge ports, coupling, impeller, diffuser, diffuser cover, valve, tie-rod and cable guard in AISI 304 • Liner ring in EPDM/AISI 304 • Shaft in AISI 316