DPNT Norm centrifugal pump

Summary

Product Identification

The Duijvelaar Pumps DPNT C series are Norm centrifugal pumps.

The model key provides the following designation structure:

• DPNT: Pump series norm
• C: Casing material (C = Cast iron GJL-250 (DP standard), D = Nodular Cast Iron GJS-400-15, 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: (Also 4P-50Hz, 2P-60 Hz, 4P-60 Hz, xx = bare shaft)
• 3.0 kW: Motor power P2 in kW
• D: Impeller material (- = GJL-250 - DP standard, D = Nodular Cast Iron GJS-400-15, 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 (Burgmann) (- = MG1 DP standard, K = M7N - M74N - M78N, L = M3N - M32N - M37N - M37GN, M = HJ92 - HJ977N - SHJ97G, N = BT-AR, X = special)

Operating Limits

The standard shaft seal (Burgmann MG1) has the following limits:

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

Feed Water

The pumps are designed 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:

• Sturdy maintenance-free anti-friction bearings, greased for life with high temperature grease.
• A deflector on the shaft prevents fluid leakage into 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
  • ¹Wearing rings and shaft sleeves are upon request. Other materials for casing, back cover, impeller on request.

General Data (2-pole and 4-pole): See the official PDF for exact tabulated values of Impeller diameter (mm), MEI, P2 (kW), IEC connection, and Part number for specific models.

Dimensions: See the official PDF for detailed bare shaft dimensions and dimensions with motor and base plate for all models.

Electrical

Motor Data:

• 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.
• 50Hz 2-pole motors: See the official PDF for exact tabulated values of Power (kW), Inom [A], Ia/In, Cos phi, Eff [%], Motor voltage [V], n [rpm], IEC connection, mass [kg], and Sound pressure level dB(A).
• 50Hz 4-pole motors: See the official PDF for exact tabulated values of Power (kW), Inom [A], Ia/In, Cos phi, Eff [%], Motor voltage [V], n [rpm], IEC connection, mass [kg], and Sound pressure level dB(A).

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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 official OEM PDF datasheet. Contractual data must always match the specific OEM PDF revision used on the project.

Official datasheet (PDF)

Lenntech datasheet mirror