Wilo-Helix V

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

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

• Corrosion-resistant impellers, guide vanes and stage housings

• Electrical connection: 3~400 V (±10 %), 50 Hz
  • ≤ 4 kW 230 V/ 400 V; Δ/Y
  • > 4 kW 400 V/ 690 V; Δ/Y
• 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): -30 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
• Protection class: IP 55
• Max. ambient temperature: +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 or Triclamp connection on request)
  • Helix V 22 – 52: PN 16/PN 25/PN 40 with round flanges according to ISO 2531 and ISO 7005

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

Pump material combination 1

• 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)

Pump material combination 2

• 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:

Pump material combination 1

• 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)

Pump material combination 2

• 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)

• The pumps can be adapted to different applications with special mechanical seals (for mixed water & glycol, pure water, aggressive liquids, ...).
• The Helix series is also available in silicone-free or ATEX versions.
• The motors can also be customised, e.g. with an overpowered motor, IE4 efficiency, PTC, reinforced external corrosion protection, canopy, anti-condensation heating, specific RAL colour, ...

• Helix V high-pressure multistage centrifugal pump
• Installation and operating instructions
• Helix V 2 – 16 (version PN16 with oval flanges): Stainless steel counter flanges with the corresponding screws, nuts and gaskets

Helix V pumps are available on request with various types of mechanical seals such as porous silicon carbide (Q7Q7) for cooling applications with water-glycol mixture or tungsten carbide/silicon carbide (UQ) for water treatment applications with pure water (conductivity below 3 µS/cm).

Helix V 2 ... 52 are available with Victaulic connections, Helix V 2 ... 16 are also available with Tri clamp connections (DIN 32676).

Both stainless steel variants (304 and 316L) can be offered with EPDM or FKM seals.

New IE4 motors in 50 Hz are available on request to save even more energy.

• Electrical connection: 3~400 V (±10 %), 50 Hz
  • ≤ 4 kW 230 V/ 400 V; Δ/Y
  • > 4 kW 400 V/ 690 V; Δ/Y
• 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): -30 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
• Protection class: IP 55
• Max. ambient temperature: +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 or Triclamp connection on request)
  • Helix V 22 – 52: PN 16/PN 25/PN 40 with round flanges according to ISO 2531 and ISO 7005

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

Pump material combination 1

• 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)

Pump material combination 2

• 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:

Pump material combination 1

• 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)

Pump material combination 2

• 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)

• The pumps can be adapted to different applications with special mechanical seals (for mixed water & glycol, pure water, aggressive liquids, ...).
• The Helix series is also available in silicone-free or ATEX versions.
• The motors can also be customised, e.g. with an overpowered motor, IE4 efficiency, PTC, reinforced external corrosion protection, canopy, anti-condensation heating, specific RAL colour, ...

• Helix V high-pressure multistage centrifugal pump
• Installation and operating instructions
• Helix V 2 – 16 (version PN16 with oval flanges): Stainless steel counter flanges with the corresponding screws, nuts and gaskets

Helix V pumps are available on request with various types of mechanical seals such as porous silicon carbide (Q7Q7) for cooling applications with water-glycol mixture or tungsten carbide/silicon carbide (UQ) for water treatment applications with pure water (conductivity below 3 µS/cm).

Helix V 2 ... 52 are available with Victaulic connections, Helix V 2 ... 16 are also available with Tri clamp connections (DIN 32676).

Both stainless steel variants (304 and 316L) can be offered with EPDM or FKM seals.

New IE4 motors in 50 Hz are available on request to save even more energy.