Wilo-Helix VE
Energy-saving vertical multistage centrifugal pump for large buildings.
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Description
Wilo-Helix VE (11-22 kW) is a variable speed vertical multistage pump for cold water application in large buildings. It combines an IE5 EC motor drive, an integrated, air-cooled frequency converter and various control modes. The result is high energy efficiency in both closed and open systems.
Proven pump hydraulics in stainless steel, a separate lantern roller bearing that ensures optimum admission of axial thrusts, integrated protection functions and low water detection allows high reliability.
An easy integration into building automation is possible thanks to analogue and digital interfaces and IF modules.
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Advantages
- Multistage, stainless steel, high-efficiency pump with adjustable speed, 2D/3D hydraulics and standard motor
- Optimised design for easy operation, transport and installation with handles, lantern adjustment and rotatable loose flanges
- User-friendly display with Green Button Technology and full-text menu
- IF plug-in module for quick communication with the BMS
- Innovative cartridge mechanical seal and spacers allow for quick maintenance
- The new Helix design reduces life cycle costs
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Technical Features
Design
Highly efficient, non-self-priming high-pressure multistage centrifugal pump in vertical design with in-line connections. Equipped with electronically controlled EC motor of energy efficiency class IE5 in accordance with IEC 60034-30-2
Application
- Water supply and pressure boosting
- Industrial circulation systems
- Process water
- Closed cooling circuits
- Fire extinguishing systems
- Washing systems
- Irrigation
Equipment/function
- Impellers, guide vanes and stage housings made of corrosion-resistant material
Typekey
Example: Helix VE 2202/2-1/16/E/KS Helix VE Vertical high-pressure multistage centrifugal pump in in-line design (electronically controlled) 22 Flow rate in m3/h 02 Number of impellers 2 Number of trimmed impellers (optionally) 1 Pump material 1 = Pump housing 1.4301 (AISI 304)Hydraulics 1.4307 (AISI 304L) 2 = Pump housing 1.4409 (AISI 316L)Hydraulics 1.4404 (AISI 316L) 3 = Pump housing EN-GJL-250 (cataphoretic-coated)Hydraulics 1.4307 (AISI 304L) 16 Maximum operating pressure in bar 16 = 16 bar, PN 16 flange (up to 16 m3/h oval flange) 25 = 25 bar, PN 25 flange 30 = 30 bar, PN 40 flange E Gasket type E = EPDMV = FKM K Cartridge mechanical seal S The coupling guard is on a line with suction and discharge ports of the pump Technical Data
- Electrical connection:
- 3~ 380 V … 480 V, +/-10 %, 50/60 Hz TN, TT, IT
- 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: IP55
- 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
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 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 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)
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