1335

Summary

Product identification

The 1335, 50Hz series is a non-clog submersible pump designed for efficient pumping of clean water, surface water, and wastewater containing solids. The pump is engineered for sustained efficiency over time.

Denomination: Non-clog

Type:

• Non-explosion proof version: 1335.181
• Explosion proof version: 1335.090

Model variants:

• H – High head
• L – Low head
• M – Medium head

Installation types:

• Free-standing: Portable semipermanent, wet well arrangement with hose coupling or flange for connection to the discharge pipeline.
• Wet-well: Semipermanent, wet well arrangement with the pump installed on two guide bars. The connection to the discharge is automatic.

Operating limits

• Liquid temperature: Maximum 40°C (104°F)
• Depth of immersion: Maximum 20 m (65 ft)
• pH of the pumped liquid: 5.5 – 14
• Liquid density: Maximum 1100 kg/m³
• Number of starts per hour: Maximum 15

Electrical

• Motor type: Squirrel-cage induction motor
• Frequency: 50 Hz
• Power supply: 3-phase
• Starting method:
  • Direct on-line
  • Star-delta
  • Variable Frequency Drive (VFD)
• Code compliance: IEC 60034-1
• Voltage variation without overheating: ±10%, if it does not run continuously at full load
• Voltage imbalance between phases: Maximum 2%
• Stator insulation class: F (155°C [311°F])
• Cables:
  • Direct-on-line start or Y/D start with two cables: Flygt SUBCAB® - a heavy duty 4 cores motor power cable with two twisted pair screened control cores. Conductor insulation rating of 90°C. Chemical resistant within pH 3-10 and ozone, oil, and flame resistant. Used up to 70°C water temperature. Cables < 10 mm² with unscreened control cores.
  • Y/D start: Flygt SUBCAB® - a heavy duty 7 cores motor power cable with two twisted pair screened control cores. Conductor insulation rating of 90°C. Chemical resistant within pH 3-10 and ozone, oil, and flame resistant. Used up to 70°C water temperature. Cables < 7G6 mm² with unscreened control cores.
• Monitoring equipment: Thermal contacts opening temperature 140°C (284°F)
• Motor rating (400 V, 50 Hz, 3-phase):
  • Star-delta starting current is 1/3 of Direct on-line starting current.
  • High Head (H) Models:
    • 50 kW (67 hp), Impeller No 442/443: 1470 rpm, 87 A Rated Current, 540 A Start Current, 0.9 Power Factor.
    • 45 kW (60 hp), Impeller No 444: 1475 rpm, 79 A Rated Current, 540 A Start Current, 0.9 Power Factor.
    • 37 kW (50 hp), Impeller No 445: 1480 rpm, 66 A Rated Current, 540 A Start Current, 0.88 Power Factor.
  • Low Head (L) Models:
    • 40 kW (54 hp), Impeller No 600: 970 rpm, 76 A Rated Current, 415 A Start Current, 0.85 Power Factor.
    • 37 kW (50 hp), Impeller No 601: 970 rpm, 71 A Rated Current, 415 A Start Current, 0.84 Power Factor.
    • 28 kW (38 hp), Impeller No 602: 980 rpm, 56 A Rated Current, 415 A Start Current, 0.79 Power Factor.
    • 18 kW (24 hp), Impeller No 603: 985 rpm, 43 A Rated Current, 415 A Start Current, 0.67 Power Factor.
  • Medium Head (M) Models:
    • 45 kW (60 hp), Impeller No 420: 1475 rpm, 79 A Rated Current, 540 A Start Current, 0.9 Power Factor.
    • 37 kW (50 hp), Impeller No 421: 1480 rpm, 66 A Rated Current, 540 A Start Current, 0.88 Power Factor.
    • 30 kW (40 hp), Impeller No 422: 1485 rpm, 55 A Rated Current, 540 A Start Current, 0.85 Power Factor.
    • 22 kW (30 hp), Impeller No 423: 1490 rpm, 44 A Rated Current, 540 A Start Current, 0.78 Power Factor.
  • Installation types for all listed models: Free-standing (FS), Wet-well (WW).
• Performance curves are available in the official PDF.

Mechanical / hydraulic

Major parts materials:

• Major castings: Cast iron, gray (ASTM 30B, EN GJL-200)
• Pump housing: Cast iron, gray (ASTM 30B, EN GJL-200)
• Impeller: Cast iron, gray (ASTM 30B, EN GJL-200)
• Lifting eye bolt: Steel electro zinc coated (EN 10084 - C15E)
• Lifting handle: Stainless steel (AISI 304, EN 1.4301)
• Shaft: Stainless steel (AISI 431, EN 1.4057+QT800)
• Screws and nuts: Stainless steel, A2 (AISI 304, EN 1.4301, 1.4306, 1.4307, 1.4311)
• O-rings: Nitrile rubber (NBR) 70° IRH
• Oil, part no 901752: Medical white oil of paraffin type. Fulfills FDA 172.878 (a)

Mechanical seals:

• Inner seal: Corrosion resistant cemented carbide (WCCR)/ Corrosion resistant cemented carbide (WCCR)
• Outer seal: Corrosion resistant cemented carbide (WCCR)/ Corrosion resistant cemented carbide (WCCR)

Surface treatment: Black or blue two-component high-solid top coating.

Options:

• Leakage sensor in the stator housing (FLS)

Accessories:

• Installation equipment (sold in kits)
• Mechanical accessories such as discharge connections, adapters, and hose connections
• Electrical accessories such as pump controller, control panels, starters, monitoring relays, and cables

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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