DPH(S)I High efficiency horizontal pumps

Summary

Product identification

The DPH(S)I is a Multistage Horizontal High-pressure Centrifugal Pump manufactured by Duijvelaar Pompen.

Operating limits

• Flow rate (Q): ≤ 26.3 m³/h
• Head (H): ≤ 195 m
• Fluid temperature (T): ≥ -20 °C to ≤ +140 °C
• Operating pressure (p): ≤ 25 bar
• Maximum pressure class: PN 25

Fluids handled

The pump is designed to handle:

• Hot water
• Clear water
• Condensate
• Cooling water
• Fire-fighting water
• Oil
• Cleaning agents
• And others

General guidelines for fluids handled:

• Reference temperature for chemical resistance data: +20 °C.
• For temperatures <0 °C, contact the manufacturer.
• For temperatures > +50 °C, check and observe the vapor pressure of the fluid.
• Maximum fluid temperature is +120 °C, unless otherwise indicated.
• Maximum concentration is 100 %, unless otherwise indicated.
• Mechanical seals (silicon carbide / carbon, Q1B) are not suitable for fluids containing solid substances, including particles from salt crystallization at low fluid temperatures.
• Mechanical seals (tungsten carbide / tungsten carbide, U3U3) are limited to a solids content of max. 20 ppm (depending on particle size), with the exception of corrosive fluids.
• High temperatures increase corrosion (reference temperature = +20 °C).
• Chloride contents exceeding 300 mg/l may cause localized corrosion under unfavorable conditions (high temperatures, deposits, long idle periods).

Minimum and Maximum Flow Rates (Q) at fluid temperature ≤ +20 °C:

50 Hz

• 2900 rpm:
  • 2B: Min. 0.2 m³/h, Max. 3.3 m³/h
  • 4B: Min. 0.4 m³/h, Max. 6.5 m³/h
  • 6B: Min. 0.6 m³/h, Max. 9.0 m³/h
  • 10B: Min. 1.1 m³/h, Max. 13.2 m³/h
  • 15B: Min. 1.6 m³/h, Max. 22.5 m³/h
• 1450 rpm:
  • 10B: Min. 0.5 m³/h, Max. 6.6 m³/h
  • 15B: Min. 0.8 m³/h, Max. 11.3 m³/h

60 Hz

• 3500 rpm:
  • 2B: Min. 0.2 m³/h, Max. 4.0 m³/h
  • 4B: Min. 0.5 m³/h, Max. 7.8 m³/h
  • 6B: Min. 0.8 m³/h, Max. 8.6 m³/h
  • 10B: Min. 1.3 m³/h, Max. 15.8 m³/h
  • 15B: Min. 2.0 m³/h, Max. 27.0 m³/h
• 1750 rpm:
  • 10B: Min. 0.6 m³/h, Max. 7.9 m³/h
  • 15B: Min. 1.0 m³/h, Max. 13.5 m³/h

For a detailed overview of chemical resistance for various fluids, including maximum percentages, temperatures, and compatible seal codes, please refer to the official PDF.

Mechanical / hydraulic

• Design: High-pressure, centrifugal, single-stage or multistage pump for horizontal installation.
• Bearings: Tungsten carbide plain bearings at the hydraulic rotor.
• Shaft seal: Uncooled, maintenance-free mechanical seals are available in Fixed, Easy Access, and Cartridge designs.
  • For a detailed table of available mechanical seals, including temperature, pressure, and material codes (EN 12756), please refer to the official PDF.
• Materials:
  • Pump shroud: 1.4301 (H variant), 1.4404 (HS variant)
  • Pump casing: 1.4408 (both H and HS variants)
  • Shaft: 1.4057 (H variant), 1.4460 (HS variant)
  • Impeller: 1.4301 (H variant), 1.4404 (HS variant)
  • O-ring: EPDM-WRc / ACS (H variant), FPM / HNBR (HS variant)
  • Bearing sleeve: Tungsten carbide / aluminium oxide
  • For a complete list of materials for all components and their EN/ASTM comparisons, please refer to the official PDF.
• Coating:
  • Drive lantern: Cataphoretic coating
  • Pump foot: Powder coating
• Product benefits: Reliable (product-lubricated plain bearings of tungsten carbide, cast pump foot, torsion-resistant pump shroud, confined O-rings), long service life (corrosion-resistant stainless steel hydraulic components), easy to service (compatible with standardized mechanical seals to EN 12756), and easy to install horizontally.
• NPSH: An impeller for lower NPSH values is available for sizes 2, 4, 6, 10, and 15 to prevent cavitation in critical inlet conditions. A safety margin of at least 0.5 m must be added to NPSH values for pump selection.
• Acceptance tests:
  • Pressure test to EN 809.
  • Leak test with water.
  • Materials testing (Certificate of compliance with the order to EN 10204, Test report 2.2 on request, Inspection certificate 3.1 to EN 10204 on request).
  • Hydraulic test: Duty point guaranteed to ISO 9906:2012 Grade 3B, performed with the original motor. NPSH and suction lift are not measured (3.2 certificate available).

Electrical

• Drive: Surface-cooled DP squirrel-cage motor.
• Thermal class: F to IEC 34-1.
• Efficiency class: IE3 to IEC 60034-30 (for three-phase motors ≥ 0.75 kW).
• Enclosure: IP55.
• Frequency: 50 Hz/60 Hz.
• Optional: Harting connector, type HAN 10E.

For detailed technical motor data, including power (PN), voltage (UN), current (IA), power factor (cos φ), speed (n), efficiency (η), sound pressure level (Lp), cable gland type, and maximum frequency of starts for various 50 Hz and 60 Hz motor configurations, please refer to the official PDF.

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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 original OEM PDF. Contractual data must always match the specific OEM PDF revision used for the project.

Official datasheet (PDF)

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