Design

Electronically controlled, non-self-priming high-pressure multistage centrifugal pump in vertical design, with in-line connections

Application

• Water supply and pressure boosting
• Industrial circulation systems
• Process water
• Closed cooling circuits
• Fire extinguishing systems
• Washing systems
• Irrigation

Type key

Special features/product advantages

• Multistage, speed-configurable stainless steel high-efficiency pump with 2D/3D hydraulics and standard motor
• Optimised design for easy operation, transportation and installation with handles, lantern-adjustment and controllable free flanges
• User-friendly display with Green Button Technology and full text menu
• IF plug-in module for quick communication with the BMS
• Quick maintenance due to innovative cartridge mechanical seal and spacers
• Lower life cycle costs due to new Helix design

Technical data

• Minimum Efficiency Index (MEI) ≥ 0.7

• Electrical connection:
  • 3~ 50 Hz : 400V +/-10%
  • 3~ 60 Hz : 380V +/-10%
  • 3~ 60 Hz : 480V +/-10%
• Fluid temperature range:
  • Helix VE 2 – 16 (EPDM): -30 to 120 °C (130 °C on request)
  • Helix VE 2 – 16 for aggressive media (FKM): -15 to 90 °C
  • Helix VE22 – 52 (EPDM): -20 to 120 °C (130 °C on request)
  • Helix VE22 – 52 for aggressive media (FKM): -15 to 90 °C (-30 to 120 °C with EPDM gasket on request)
• Max. operating pressure: 16/25 bar
• Protection class: IP 55
• Max. ambient temperature: +40°C (extended temperature ranges on request)
• Available versions:
  • Helix VE 2 – 16: PN 16 with oval flanges, PN 25 with round flanges according to ISO 2531 and ISO 7005 (Victaulic coupling on request)
  • Helix VE 22 – 52: PN 16 and PN 25 with round flanges according to ISO 2531 and ISO 7005

Equipment/function

• Impellers, guide vanes and stage housings made of corrosion-resistant material

Materials

Helix VE 2, 4, 6, 10, 16:

Standard version

• Impellers, stage housings and guide vanes made of stainless steel 1.4307 (AISI 304L)
• Pump housing made of stainless steel 1.4301 (AISI 304)
• Baseplate and lantern in EN-GJL-250 (cataphoretic coated)
• Shaft made of stainless steel 1.4301 (AISI 304) or 1.4462 (AISI 318LN) (depending on version)
• Sleeve under the mechanical seal 1.4404 (316L)
• O-ring of EPDM (FKM gasket on request)
• Jacket pipe made of stainless steel 1.4301 (AISI 304)

For aggressive media

• Impellers, stage housings and guide vane apparatuses made of stainless steel 1.4404 (316L)
• Pump housing made of stainless steel 1.4404 (316L)
• Shaft made of stainless steel 1.4404 (316L) or 1.4462 (AISI 318LN) (depending on version)
• Sleeve under the mechanical seal 1.4404 (316L)
• O-ring of FKM (EPDM gasket on request)
• Jacket pipe made of stainless steel 1.4404 (316L)

Helix VE 22, 36, 52:

Standard version

• Stage housings, impellers, guide vane apparatuses made of stainless steel 1.4307 (AISI 304L)
• Pump housing made of stainless steel 1.4301 (AISI 304) or cataphoretic-coated grey cast iron EN-GJL 250, loose flanges made of EN-GJS 400 for Helix VE 36-52.
• Shaft made of stainless steel 1.4057 (AISI 431)
• Sleeve under the mechanical seal 1.4404 (316L)
• O-ring of EPDM (FKM gasket on request)
• Jacket pipe made of stainless steel 1.4301 (AISI 304)

For aggressive media

• Stage housings, impellers, and guide vane apparatuses made of stainless steel 1.4404 (316L)
• Pump housing: all parts which come in contact with the media are made of cast stainless steel 1.4409 (316L); loose flanges of cataphoretic-coated grey cast iron EN-GJL 250 for Helix VE 22 / EN-GJS 400 for Helix VE 36-52.
• Baseplate made of stainless steel 1.4301 (AISI 304)
• Shaft made of stainless steel 1.4404 (316L) or 1.4462 (AISI 318LN) (depending on version)
• Sleeve under the mechanical seal 1.4404 (316L)
• O-ring of FKM (EPDM gasket on request)
• Pressure shroud made of stainless steel 1.4404 (316L)

Scope of delivery

• Helix VE high-pressure multistage centrifugal pump
• Installation and operating instructions
• Helix VE 2 – 16 (version PN16 with oval flanges): Counter flanges made of stainless steel with corresponding screws, nuts and gaskets

General notes - ErP (ecological design-) directive

The benchmark for most efficient water pumps is MEI ≥ 0.70The efficiency of a pump with a trimmed impeller is usually lower than that of a pump with the full impeller diameter. The trimming of the impeller will adapt the pump to a fixed duty point, leading to reduced energy consumption. The minimum efficiency index (MEI) is based on the full impeller diameter.The operation of this water pump with variable duty points may be more efficient and economic when controlled, for example, by the use of a variable speed drive that matches the pump duty to the system.Information on benchmark efficiency is available at www.europump.org/efficiencychartsPumps with power consumption > 150 kW or a volume flow QBEP < 6 m3/h are not subject to the Ecodesign Directive for water pumps. Therefore, no MEI value is shown.