Centrifugal pump Helix V series

waterelectricself-priming

Short description
The Wilo-Helix V is a highly efficient vertical multistage in-line pump with IE3/IE4 motor. All components that come in contact with the fluid are made of stainless steel (AISI 304 / AISI 316L) for high corrosion resistance. The configurable pump is suitable for applications ranging from water supply and pressure boosting to cooling technology and demanding industrial applications. Drinking water approval is available with EPDM gaskets. The design prioritises easy maintenance and a long service life.

Key features

• IE3/IE4 fixed-speed motor ensures high efficiency
• Fluid-contact components made of laser-welded or cast stainless steel (AISI 304 / AISI 316L)
• Versatile gasket types and pump connections (oval flanges, round flanges to ISO, Victaulic or Triclamp)
• Maintenance-friendly: bearing integrated in lantern, wide motor compatibility, spacer coupling and cartridge mechanical seal (if used)
• Suitable for ambient temperatures up to +50 °C without power dissipation
• Drinking water approval when EPDM rubber is selected for the gasket

Applications

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

Design / Construction
Non-self-priming, high-efficiency multistage high-pressure centrifugal pump in vertical in-line design.

Equipment / Function

• Corrosion-resistant impellers, guide vanes and stage housings

Type key (examples)
Example: Helix V 2202/2-1/16/E/KS/400-50
Helix V = Vertical high-pressure multistage centrifugal pump in in-line design
22 = Flow rate in m3/h
02 = Number of impellers
2 = Number of trimmed impellers (optional)
1 = Pump material combination (1 = Pump housing 1.4301, Hydraulics 1.4307 / AISI 304/304L)
2 = Pump material combination (2 = Pump housing 1.4409, Hydraulics 1.4404 / AISI 316L)
16 / 25 / 30 = Maximum operating pressure in bar (various flange/PN options)
E = Gasket type (E = EPDM; V = FKM)
K = Cartridge type mechanical seal
S = Coupling guard aligned with suction and discharge ports
400 = Connection voltage in V

Materials (overview)
Available pump material combinations use stainless steels (1.4301 / 1.4307 / 1.4404 / 1.4409) for housings, impellers, guide vanes and shafts; baseplate and lantern are cataphoretic-coated cast iron; sleeves under seals are 1.4404; O-rings EPDM or FKM.

Technical data

• Electrical connection: 3~400 V ±10 %, 50 Hz
• Fluid temperature range: With EPDM: -30 … 120 °C (130 °C possible with cartridge and below 16 bar); With FKM: -15 … 90 °C
• Max. operating pressure: 16 / 25 / 30 bar (various flange/PN configurations)
• IP rating: IP55
• Max. ambient temperature: +50 °C (extended ranges on request)
• Available connections: PN16 (oval flanges for ≤16 m³/h), PN25 / PN40 with round flanges to ISO (Victaulic or Tri-clamp on request)

Caractéristiques / spécifications techniques

• Series name: Helix V
• Motor efficiency classes available: IE3, IE4 (option)
• Materials (fluid-contact): AISI 304 / AISI 316L (various combinations)
• Mechanical seal options: cartridge mechanical seal or standard mechanical seal; special seals available for glycol mixtures, pure water or aggressive media
• Rated power range examples shown on product site: from 0.37 kW up to larger motors (configurable up to approx. 45 kW depending on version)
• Flow rate examples: multiple configurations (e.g. 2 m³/h shown in typical product entries); many variants available across series
• Maximum operating pressures: 16 bar / 25 bar / 30 bar depending on model and flange type
• Protection class: IP55