SCM 4 Plus Multistage Submersible Pumps

Summary

Product Identification

The SCM 4 PLUS series consists of multi-stage submersible pumps directly coupled to a submersed motor, suitable for lifting water from deep wells with a diameter of ø 4” (100 mm).

Applications

• Lifting of water from boreholes
• Automatic systems for garden irrigation
• Irrigation for agricultural use
• Aqueducts for drinking water
• Lifting and supply of tanks and pressurization autoclaves, for civil and industrial systems

Operating Limits

• Type of liquid: Clean, non-aggressive, non-explosive, free of solid particles
• Maximum liquid temperature: 35°C
• Maximum start-ups per hour: 30

Mechanical / Hydraulic

• Pump Type: 4” multi-stage centrifugal submersed pump
• Motor: Submersed 4" motor
• Flange: NEMA 4”
• Speed of rotation: 2850 rpm
• Gasket: Special mechanical gasket with sand-proof protection
• Outlet: Stainless steel AISI 304 casting with a double inner conical profile, stainless steel non-return valve, and double slot for a safety cable. Designed for maximum rigidity and resistance to water hammer.
• Shaft Guide Bearing: Self-lubricating closed bushing in polyamide molybdenum disulfide, with a stainless steel shaft featuring a ceramic insert at the point of wear. Offers protection against dry running and resistance to sand.
• Impeller: Floating impeller with stainless steel inlet molded with a diffuser cover. Thrust bearing between impeller hub and diffuser, consisting of 1 ceramic ring molded with the diffuser and a free graphite ring. Provides high resistance to abrasive action of sand and dry running.
• Motor Support and Inlet: Stainless steel AISI 304 casting rigidly welded to an external stainless steel sleeve, with a stainless steel intake grille.

Materials

• Outlet: Stainless steel X5 CrNi1810 (AISI 304) casting
• Intake flange: Stainless steel X5 CrNi1810 (AISI 304) casting
• Pump body: Stainless steel X5 CrNi 1810 (AISI 304)
• Non-return valve: Stainless steel X5 CrNi 1810 (AISI 304)
• Cable protection conduit: Stainless steel X5 CrNi 1810 (Aisi 304)
• Filter: Stainless steel X5 CrNi 1810 (Aisi 304)
• Impellers: Acetal resin
• Diffuser: Polycarbonate with ceramic insert at point of wear
• Diffuser cap: Polycarbonate with ceramic insert at point of wear
• Motor shaft: Hexagonal in stainless steel X10 CrNiS1809 (AISI 303) with ceramic insert at point of wear
• Self-lubricating supply bearing: Polyamide molybdenum disulfide

Electrical

• Stator: Special resin impregnated sealed stator
• Cooling: Thrust bearings and bushings cooled with non-polluting water
• Power Cable: Extractable, approximately 1.75 m in length
• Degree of protection: IP 68
• Insulation class: B
• Motor protection: Thermal relay provided by the user

Motor Specifications

Detailed electrical specifications for single-phase (1230V 50Hz) and three-phase (3230V 50Hz, 3~400V 50Hz) motors, including axial thrust, power (kW/Hp), current (In, I start), RPM, CosØ, Ts/Tn, efficiency (EFF %), run capacitor (C run µF for single-phase), weight, and motor length, are available in the official PDF.

Performance

The hydraulic performance tables for SCM 4 PLUS models (40, 55, 75, 115, 150 series) provide detailed data on the number of stages, motor power, voltage, current, flow rates (l/min, m³/h, lmp gpm, US gpm), head (m.c.a. / m.c.w., ft), and hydraulic yield (η %).

• Minimum Efficiency Index (MEI): ≥ 0.4 (Reference MEI ≥ 0.70)
• The power curve refers to the shaft power per stage.
• % indicates the hydraulic yield of the pump.

See the official PDF for exact tabulated values.

Dimensions and Weights

A table detailing total length (A, B, C in mm), nominal diameter (DNM), package length (mm), and total weight (kg) for various SCM 4 PLUS models is available in the official PDF.

Cables and Fittings

The datasheet includes information on NEOPRENE CABLE H07 RNF with 4 wires in various cross-sections (1, 1.5, 2.5, 4, 6, 10 sq.mm). It also lists joint kits for heat shrink and casting resin joints for cables up to 4 x 10 sq.mm. A comprehensive table for choosing the electric cable based on motor HP/kW, voltage, and cable section is provided.

See the official PDF for exact tabulated values.

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Disclaimer: This summary is based on extracted text and may not include all figures, footnotes, or the latest revisions from the complete OEM PDF datasheet. Contractual data must always match the specific OEM PDF revision used on the project.

Official datasheet (PDF)

Lenntech datasheet mirror