Z10, Z12

Summary

Product Identification

• Series: 6Z10, 6Z12
• Type: 10” - 12” Submersible Electric Pumps
• Document Code: 191015691 Rev.C Ed.09/2012
• Frequency: 60 Hz

The identification code follows a structure, for example: 6ZR10 150 03/2B - L8W

• 6: Indicates 60 Hz operation.
• Z: Denotes the pump series.
• R: (Optional) Indicates a Duplex version.
• 10 or 12: Specifies the pump size in inches.
• 150 or 340: Represents the flow rate in m³/h.
• 03: Indicates the number of stages.
• /2B: Specifies the number of reduced stages and reduction type.
• L8W: Denotes the motor code (e.g., 8” L8W motor).

Applications

These pumps are designed for:

• Water supply from deep wells.
• Pressure boosting and water distribution in civil and industrial systems.
• Supply of surge tanks and reservoirs.
• Firefighting and washing systems.
• Water table level control.
• Irrigation.

Market Sectors: Agricultural, Industrial, Municipal.

Operating Limits

Pump

• Delivery:
  • 6Z10 Series: up to 400 m³/h
  • 6Z12 Series: up to 480 m³/h
• Head:
  • 6Z10 Series: up to 520 m
  • 6Z12 Series: up to 390 m
• Maximum Pump Overall Diameter (with 2 cable covers included):
  • 6Z10 Series: 271 mm
  • 6Z12 Series: 302 mm
• Maximum Electric Pump Immersion Depth: 350 m (with L6W, L8W, L10W, L12W motors for 6Z10; with L8W, L10W, L12W motors for 6Z12).
• Sand Content: Should not exceed 50 g/m³. Higher contents up to 100 g/m³ can be admitted if wear is tolerated.
• Horizontal Installation: Possible; it is recommended to have an incline of at least 3° with the motor on the lowest position.
• Liquid Performance Basis: Valid for liquids with density ρ = 1.0 Kg/dm³ and kinematic viscosity ν = 1 mm²/sec.

Motor

• Maximum Supply Voltage Variations: ±10% for L6W, L8W, L10W, L12W motors.
• Horizontal Operation:
  • L6W (6Z10 Series): All versions are designed for horizontal installation, provided that the direction of the axial thrust generated by the impellers is always from the pump to the motor.
  • L8W, L10W, L12W (6Z10 Series): Available on request for all versions.
  • L8W, L10W, L12W (6Z12 Series): All versions are designed for horizontal installation, provided that the direction of the axial thrust generated by the impellers is always from the pump to the motor.
• Maximum Number of Starts per Hour:
  • L6W: 15
  • L8W: 10
  • L10W: 8
  • L12W: 4
• Maximum Water Temperature in Contact with Motor: 30°C for L6W, L8W, L10W, L12W.
• Special Versions (HT): For applications in high temperature environments (up to 60°C) or under inverter.

Electrical

• Motor Power:
  • 6Z10 Series: from 18,5 to 350 kW
  • 6Z12 Series: from 45 to 350 kW
• Motor Types: L6W, L8W, L10W, and L12W rewindable water-filled three-phase motors.
• Three-phase Voltage Options (60 Hz):
  • L6W:
    • 4 to 18,5 kW, DOL 230 V
    • 4 to 30 kW, Y/D 230 V
    • 4 to 37 kW 380 V
    • 4 to 37 kW 460 V
  • L8W:
    • 30 to 93 kW 380 V
    • 30 to 93 kW 460 V
  • L10W:
    • 93 to 150 kW 380 V
    • 93 to 150 kW 460 V
  • L12W:
    • 185 to 300 kW 380 V
    • 185 to 300 kW 460 V

Mechanical / Hydraulic

Construction Features

• Robust but lightweight, easy to maintain, and with high corrosion resistance.
• Impeller and diffusers made of stainless steel castings.
• Delivery head and suction support of stainless steel castings.
• Stainless steel non-return valve integrated and spring-equipped.
• Stainless steel shaft.
• Guide bearings and wear rings ensure high reliability and long-lasting hydraulic performances.
• New design ensures high efficiency and low power consumption.

Materials

• Standard Versions (6Z10, 6Z12): Primarily stainless steel (e.g., EN 10213-4-GX5CrNi19-10 (1.4308) / A744-CF 8, EN 10088-1-X5CrNiMo17-12-2 (1.4401) / AISI 316, EN 10088-1-X17CrNi16-2 (1.4057) / AISI 431, EN 10088-1-X5CrNi18-10 (1.4301) / AISI 304, DIN 17440-X6CrNiMoTi17-12-2 (1.4571) / AISI 316Ti) and NBR for O-rings. POM is also used.
• Special Versions (6ZR10, 6ZR12): Made of Duplex stainless steel (e.g., EN 10088-1-X2CrNiMoN22-5-3 (1.4462) / A276/A790-S31803, EN 10213-4-GX2CrNiMoCuN25-6-3-3 (1.4517)) and Hastelloy C4 (DIN17744-NiMo16Cr16Ti (2.4610) / N06455) for valve spring in 6ZR12. AISI 904L (EN 10088-1X1NiCrMoCu25-20-5 (1.4539)) is also used.
• See the official PDF for exact tabulated values for all components.

Connections

• Standard Delivery Outlet:
  • 6Z10 Series: Rp 6” according to EN 10226.
  • 6Z12 Series: 8” NPT according to API.
• Motor Coupling:
  • 6Z10 Series: According to NEMA standard for 6” and 8” motors, with key connection for 10” and 12” motors.
  • 6Z12 Series: According to NEMA standard for 8” motors, with key connection for 10” and 12” motors.

Performance Data

Detailed hydraulic performance ranges, operating characteristics (Head vs. Flow), and dimensions and weights are provided in extensive tables within the official PDF for various pump types (e.g., 6Z10150, 6Z10220, 6Z10275, 6Z12340) and motor combinations. See the official PDF for exact tabulated values.

Accessories

• Coupling flange.
• Panels.
• Drop cables.
• Cooling shrouds.
• Temperature sensor PT 100 / PTC.

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Disclaimer: This summary is based solely on the 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