Energy-efficient and customizable, this high-pressure multistage centrifugal pump is suitable for large buildings and a wide range of other applications.
The Wilo-Helix VE is a variable-speed, vertical, high-pressure multistage centrifugal pump designed for cold water applications in large buildings and beyond. It features an IE5 EC motor, an integrated air-cooled frequency converter, and five different control modes, ensuring high energy efficiency in both open and closed systems. High operational reliability is guaranteed by proven stainless steel hydraulics and integrated protective functions, such as dry-running detection. Integration into building automation systems is easily achieved via analog and digital interfaces as well as IF modules.
Features/Product Advantages
High energy efficiency thanks to the IE5 EC motor and five integrated control modes (dp-v, dp-c, p-c, n-const, PID)
High operational reliability ensured by features such as dry-running detection
Suitable for ambient temperatures up to 50 °C
Easy operation with Green Button Technology
High robustness due to proven stainless steel hydraulics
Integration into building automation systems via analog and digital interfaces and IF modules
Design
High-efficiency, non-self-priming, vertical high-pressure multistage centrifugal pump with in-line connections. Equipped with an electronically controlled EC motor compliant with IEC 60034-30-2 standards and an IE5 energy efficiency rating
Applications
Water supply and pressure boosting
Industrial circulation systems
Process water
Closed cooling circuits
Fire-fighting systems
Washing systems
Irrigation
Equipment/Functions
Impellers, guide vane assemblies, and stage housings made of corrosion-resistant materials
Model code
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Example: |
Helix VE 2202/2-1/16/E/KS |
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Helix VE |
Vertical high-pressure multistage centrifugal pump with a tandem configuration (CNC-manufactured) |
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22 |
Volumetric flow rate, unit: m³/h |
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02 |
Number of impellers |
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2 |
Number of trimmed impellers (option) |
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1 |
Water pump material |
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1 = Pump housing 1.4301 (AISI 304), hydraulic components 1.4307 (AISI 304L) |
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2 = Pump housing 1.4409 (AISI 316L), hydraulic components 1.4404 (AISI 316L) |
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3 = Pump housing EN-GJL 250 (KTL-coated), hydraulics 1.4307 (AISI 304L) |
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16 |
Maximum working pressure, unit: bar |
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16 = 16 bar + PN 16 flange (≤ 16 m³/h: oval flange) |
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25 = 25 bar + PN 25 flange |
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30 = 30 bar + PN 40 flange |
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E |
Seal type E = EPDM V = FKM |
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K |
Cartridge-style mechanical seal |
Technical data
Electrical connection:
3~ 380 V ... 480 V, ±10%, 50/60 Hz TN, TT, IT
Fluid temperature range:
With EPDM: -30 … 120 °C (up to 130 °C for cartridge versions below 16 bar)
With FKM: -15 … 90 °C
Max. operating pressure: 16/25 bar
Protection class: IP55
Max. ambient temperature: +50 °C (extended temperature range available on request)
Available specifications:
Helix VE 2 – 16: PN 16 with oval flanges; PN 25 with compatible round flanges compliant with ISO 2531 and ISO 7005 standards (Victaulic couplings available on request)
Helix VE 22 – 105: PN 16 and PN 25 round flanges compliant with ISO 2531 and ISO 7005 standards
Materials
Helix VE 2, 4, 6, 10, 16:
Pump material combination
Impeller, diffuser, and guide vane assembly made of 1.4307 stainless steel (AISI 304L)
Pump housing made of 1.4301 stainless steel (AISI 304)
Base plate and lantern made of EN-GJL 250 (KTL-coated)
Shaft made of 1.4301 (AISI 304) or 1.4462 (AISI 318LN) stainless steel (depending on design)
Sleeve beneath the mechanical seal made of 1.4404 (AISI 316L) stainless steel
O-rings made of EPDM (FKM seals available on request)
Outer sleeve made of 1.4301 (AISI 304) stainless steel Construction
Pump variant 2 material combination
Impeller, pump housing (volute), and guide vanes made of stainless steel 1.4404 (AISI 316L)
Pump housing made of stainless steel 1.4404 (AISI 316)
Shaft made of stainless steel 1.4404 (AISI 316L) or 1.4462 (AISI 318LN) (depending on design)
Sleeve below the mechanical seal made of 1.4404 (AISI 316L)
O-rings made of FKM (EPDM seals available upon request)
Outer sleeve made of stainless steel 1.4404 (AISI 316L)
Helix VE 22, 36, 52, 80, 105:
Pump variant 1 material combination
Pump housing (volute), impeller, and guide vane assembly made of stainless steel 1.4307 (AISI 304L)
Pump housing made of stainless steel 1.4308 (AISI 304); loose flanges made of grey cast iron EN-GJL 250 or EN-GJS 400 with KTL coating
Shaft made of stainless steel 1.4057 (AISI 431)
Sleeve below the mechanical seal made of 1.4404 (AISI 316L)
O-rings made of EPDM (FKM seals available upon request)
Outer sleeve made of stainless steel 1.4301 (AISI 304)
Pump variant 2 material combination
Pump housing (volute), impeller, and guide vane assembly made of stainless steel 1.4404 (AISI 316L) Materials
Pump housing: All parts in contact with the fluid are made of 1.4409 (AISI 316L) stainless steel; loose flanges are made of KTL-coated EN-GJL 250 or EN-GJS 400 cast iron
Baseplate made of KTL-coated cast iron
Shaft made of stainless steel 1.4404 (AISI 316L) or 1.4462 (AISI 318LN) (depending on the design version)
Sleeve beneath the mechanical seal made of 1.4404 (AISI 316L)
O-rings made of FKM or EPDM
Pressure shroud made of stainless steel 1.4404 (AISI 316L)
As supplied
Helix VE high-pressure multistage centrifugal pump
Installation and operating instructions
Helix VE 2 – 16 (PN16 models equipped with oval flanges): Counter-flanges made of stainless steel, including corresponding screws, nuts, and gaskets