DPNT Norm centrifugal pump

Summary

Product identification

The DPNT C series are Norm centrifugal pumps.

The model key designates pumps as follows:

• DPNT: Pump series norm
• C: Casing material
  • C = Cast iron GG25 (DP standard)
  • D = Nodulair Cast Iron GGG40
  • E = Cast Bronze G-CuSn 10
  • F = Chrome Nickel Steel X5 Cr Ni 18.9
  • G = Chrome Nickel Molybdeen Steel X5 Cr Ni Mo 18.10
• 32: Pump type = size discharge connection PN16
• 160: Nominal diameter impeller
• 146: Reduced diameter impeller in mm
• 2P-50 Hz: 2P-50 Hz, 4P-50Hz, 2P-60 Hz, 4P-60 Hz (xx = bare shaft)
• 3.0 kW: Motor power P2 in kW
• D: Impeller material
  • - = GG25 - DP standard
  • D = Nodulair Cast Iron GGG40
  • E = Cast Bronze G-CuSn 10
  • F = Chrome Nickel Steel X5 Cr Ni 18.9
  • G = Chrome Nickel Molybdeen Steel X5 Cr Ni Mo 18.10
• K: Mechanical seal (Burgman)
  • - = MG1 DP standard
  • K = M7N - M74N - M78N
  • L = M3N - M32N - M37N - M37GN
  • M = HJ92 - HJ977N - SHJ97G
  • N = BT-AR
  • X = special

Operating limits

Shaft Seal (Burgmann MG1):

• Pressure: p = 12 bar
• Temperature: t = -20 ...120 °C

Feed water

The pumps are suitable for thin, clean, non-aggressive and non-explosive liquids free from large solid particles or fibres.

Mechanical / hydraulic

Fields of Application:

• Water supply and booster stations
• Irrigation, overhead irrigation and draining
• Drainage stations
• Filling and emptying of tanks and containers
• Circulating of hot and cold water in central heating and air-conditioning installations
• Pumping of condensate
• Water circulating for swimming pools
• Sanitary and cleaning installations
• For industrial applications and public services
• Fresh water supply on ships

Design:

• Single-stage, end suction, centrifugal volute pump
• Main dimensions according to EN 733 (DIN 24255)
• Single entry, closed impeller is hydraulically thrust compensated and dynamically balanced
• Pump and motor are separate components, connected to each other via a flexible coupling and mounted on a common base plate
• The impeller shaft and other rotating parts are removable with no need to disconnect the suction and delivery pipes
• Maximum interchangeability of components, identical parts can be used with various sizes of a pump, which greatly simplifies and reduces stock of spare parts

Bearings: The pump has sturdy maintenance-free anti friction bearings, which are greased for life with high temperature grease. A deflector on the shaft prevents fluid leakage in to the bracket.

Shaft Seal:

• Burgmann MG1
• Single Seal
• Unbalanced
• Elastomer Bellows
• Independent on direction of rotation

Materials:

• Casing: 0.6025 / GJL-250
• Back cover: 0.6025 / GJL-250
• Impeller: 0.6025 / GJL-250
• Shaft: 1.4021 / X20 Cr 13
• Shaft sleeve: 1.4021 / X20 Cr 13
• Wear ring¹: 2.1050.01 / G-Cu Sn 10
• Gland: 0.7040 / GJS-400-15
• Bearing housing and cover: 0.6025 / GJL-250

¹ Wearing rings and shaft sleeves are upon request. Other materials for casing, back cover, impeller on request, see model key.

Performance Curves: Performance curves for various DPNT models (e.g., DPNT 32-160 2P, DPNT 32-160 4P, up to DPNT 250-500 4P) are available in the official PDF, showing characteristics for 50 Hz operation. See the official PDF for exact tabulated values.

General Data (50 Hz): General data tables for DPNT 2 pole and 4 pole models list Impeller (mm), MEI, P2 (kW), IEC connection, and Part number. See the official PDF for exact tabulated values.

Dimensions: General dimensions for DPNT bare shaft, and DPNT 2 pole and 4 pole versions with motor and base plate are provided in the official PDF, including detailed measurements in mm. See the official PDF for exact tabulated values.

Electrical

B5 flanged, IP 55 and according to IEC electric motors are used for DPNT series pumps. The motors are suitable for inverter usage according IEC 60034.

Motor Data 50Hz 2 pole: Motor data for 2 pole motors includes Power (kW), Inom (A), Ia/In, Cos phi, Eff (%), Motor voltage (V), n (rpm), IEC connection, mass (kg), and Sound pressure level dB(A). See the official PDF for exact tabulated values.

Motor Data 50Hz 4 pole: Motor data for 4 pole motors includes Power (kW), Inom (A), Ia/In, Cos phi, Eff (%), Motor voltage (V), n (rpm), IEC connection, mass (kg), and Sound pressure level dB(A). See the official PDF for exact tabulated values.

---

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

Official datasheet (PDF)

Lenntech datasheet mirror