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WILO – Centrifugal Pump – HELIX Series

Centrifugal Pump

Non-self-priming, high-efficiency multistage high-pressure centrifugal pump in vertical design with in-line connections.

The pumps can be adapted to certain specific data (e.g. motor protection, motor efficiency class IE4, Wilo-Helix pumps with VdS, ATEX approval, extended ambient temperature range). These pumps are available with an integrated vertical frequency converter with inline connections.

APPLICATIONS

  • Water distribution and collective overpressure
  • Industrial circulation systems
  • Process water
  • Closed cooling circuits
  • Fire protection installations
  • Washing stations
  • Irrigation

EQUIPMENT / FUNCTION

  • Corrosion resistant impellers, diffusers and stepped bodies
Spécifications / Specifications

Technical data

  • Electrical connection:
  • 3~400 V (±10 %), 50 Hz
    • ≤ 4 kW 230 V/ 400 V; Δ/Y
    • > 4 kW 400 V/ 690 V; Δ/Y
    • 1~ 230 V (±10 %), 50 Hz, only Wilo-Helix V 2, 4, 6, 10
  • Fluid temperature range:
    • Helix V 2 – 16 (EPDM): -30 to 120 °C (130 °C on request)
    • Helix V 2 – 16 for aggressive media (FKM): -15 to 90 °C
    • Helix V22 – 52 (EPDM): -20 to 120 °C (130 °C on request)
    • Helix V22 – 52 for aggressive media (FKM): -15 to 90 °C
  • Max. operating pressure: 16/25/30 bar
  • Max. inlet pressure of 10 bar
  • Protection class: IP 55
  • Max. ambient temperature: -15 °C – +50 °C (extended temperature ranges on request)
  • Available versions:
    • Helix V 2 – 16: PN 16 with oval flanges, PN 25/PN 40 with round flanges according to ISO 2531 and ISO 7005 (Victaulic coupling on request)
    • Helix V 22 – 52: PN 16/PN 25/PN 40 with round flanges according to ISO 2531 and ISO 7005

Materials

Helix V 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 (AISI 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 of stainless steel 1.4404 (AISI 316L)
    • Pump housing made of stainless steel 1.4404 (AISI 316L)
    • Shaft made of stainless steel 1.4404 (AISI 316L) or 1.4462 (AISI 318LN) (depending on version)
    • Sleeve under the mechanical seal 1.4404 (AISI 316L)
    • O-ring of FKM (EPDM gasket on request)
    • Jacket pipe made of stainless steel 1.4404 (AISI 316L)

Helix V 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 1.4308 (AISI 304) or cataphoretic-coated grey cast iron EN-GJL 250, loose flanges made of cataphoretic-coated grey cast iron EN-GJL 250 for Helix V 22 / EN-GJS 400 for Helix V 36-52.
    • Shaft made of stainless steel 1.4057 (AISI 431)
    • Sleeve under the mechanical seal 1.4404 (AISI 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 (AISI 316L)
    • Pump housing: all parts which come in contact with the media are made of cast stainless steel 1.4409 (AISI 316L); loose flanges of cataphoretic-coated grey cast iron EN-GJL 250 for Helix V 22 / EN-GJS 400 for Helix V 36-52.
    • Baseplate made of stainless steel 1.4301 (AISI 304)
    • Shaft made of stainless steel 1.4404 (AISI 316L) or 1.4462 (AISI 318LN) (depending on version)
    • Sleeve under the mechanical seal 1.4404 (AISI 316L)
    • O-ring of FKM (EPDM gasket on request)
    • Pressure shroud made of stainless steel 1.4404 (AISI 316L)

 

Type key

Example: Helix V(F) 2202/2-1/16/E/X/KS/../1-400-50/-38FF265
Helix V(F) Vertical high-pressure multistage centrifugal pump in in-line design(F) = VdS certified pump version
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)
4 = Monobloc pump housing EN-GJL-250 (cataphoretic-coated) Hydraulics 1.4307 (AISI 304L) [Only Helix VE 22.. and larger]
16 Maximum operating pressure in bar
16 = 16 bar (PN 16 flange)
25 = 25 bar (PN 25 flange)
30 = 30 bar (PN 40 flange)
E Gasket type E = EPDM V = FKM
X “X-Care” special version
K Cartridge type mechanical seal
S The coupling guard is on a line with suction and discharge ports of the pump
1 1 = 1~ (alternating current)None = 3~ (three-phase current)
400 Connection voltage in V
50 Frequency in Hz
-38FF265 Diameter motor shaft – lantern size (pump version without motor)
.. Optional
Courbes / Performance Curve

Schémas / Drawing