DPNM Mono-block centrifugal pump

Summary

Product identification

The DPNM C series are mono-block centrifugal pumps.

Model Key Breakdown:

• DPNM: Pump series Mono-block
• C: Cast iron version
• 32: Size
• 160: Nominal diameter impeller
• 174: Impeller diameter
• DN50-PN16: Suction connection - PN16
• DN32-PN16: Discharge connection - PN16
• 2P: 2 pole version
• 5,5kW: P2 Power

Fields of Application

• Water supply and booster stations
• Irrigation, overhead irrigation and draining
• 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

Operating limits

Pumped Liquids: Thin, clean, non-aggressive and non-explosive liquids free from large solid particles or fibres.

Shaft Seal Operating Pressure: Up to 10 bar for BURGMANN MG1 type mechanical seals used in series production with clean, non-aggressive liquids. Different types are available for harder operation conditions.

Electrical

Motors are B5 flanged, IP 55, and comply with IEC electric motor standards. They are suitable for inverter usage according to IEC 60034.

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

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

Mechanical / hydraulic

Design:

• Single-stage, end suction, centrifugal volute pump, closed-coupled centrifugal pumps with mechanical seal.
• Main dimensions according to EN 733 (DIN 24255).
• Pump flanges sizes according to ISO 7005-2, DIN 2533 and PN16.
• Single entry, closed impeller is hydraulically thrust compensated and dynamically balanced.
• A drain plug fitted in the bottom of pump housing.
• Pump and motor are separate components. Motor shaft is passed into the pump shaft for coupling. After a certain motor power, a coupling system is used between the motor shaft and pump shaft.
• The impeller shaft and other rotating parts are removable without disconnecting 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.
• Single-stage centrifugal pump coupled by means of a support, to a standard asynchronous motor, closed type, with external ventilation.

Shaft Seal: Single mechanical seal, flushed by pumped liquid, uncooled, unbalanced, heavy duty and rubber bellows mechanical seals are used for sealing. BURGMANN MG1 type mechanical seals are used for series production.

Materials:

• Casing: 0.6025 / GJL-250
• Impeller: 0.6025 / GJL-250
• Shaft: 1.4021 / X20 Cr 13
• Wear ring: 0.7040 / GJS-400-15
• Motor adapter: 0.6025 / GJL-250
• Adapter (motor): 0.6025 / GJL-250

General Data DPNM 2 pole: See the official PDF for exact tabulated values for Impeller diameter [mm], Suction DNs, Discharge DNd, MEI, P2 [kW], and mass [kg] for specific models.

General Data DPNM 4 pole: See the official PDF for exact tabulated values for Impeller diameter [mm], Suction DNs, Discharge DNd, MEI, P2 [kW], and mass [kg] for specific models.

Dimensions: General dimensions for DPNM 2 pole and DPNM 4 pole models are provided in tables in the official PDF, including values for Impeller, a, f, Lm, h1, h2, m1, m2, n1, n2, s, L, and H in [mm]. See the official PDF for exact tabulated values and corresponding dimension figures.

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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