High pressure centrifugal pump
Highly efficient high-pressure centrifugal pump in vertical design
with inline connections.
The normal-suction high-pressure centrifugal pump has an overall
compact design and is easy to maintain. The
pump shaft and the motor shaft of the IEC standard motor are
connected using a shell coupling and a separate
lantern ball bearing ensures optimal absorption of axial forces. Intermediate bearings in the hydraulics and
corrosion-resistant shaft with stainless steel sleeve ensure a
long service life. Special, permanently attached lifting eyes
enable the pump to be easily installed.
The pump is suitable for use in water supply
and pressure boosting, in industrial circulation systems as well as in
process water circuits and closed cooling circuits. It can also be used in fire extinguishing systems, washing systems and for
irrigation. Special features/product advantages
- Efficiency-optimized, laser-welded 2D/3D hydraulics with
flow and degassing optimization
- Corrosion-resistant impellers, guide vanes and stage housing
- Volume flow and NPSH-optimized pump housing
- Maintenance-friendly design with particularly robust
coupling protection
- Drinking water approval for pumps with medium-contacting
parts made of stainless steel (EPDM version)
Scope of delivery
- Wilo-Helix V high-pressure centrifugal pump
- Installation and operating instructions
Notes on the design
- The motor protection for the three-phase motor is available on request
or must be provided on site
- Single-phase AC motor with built-in thermal
motor protection and capacitor
- The standard position of the terminal box is aligned with the suction flange, but this can be changed if required
- The Wilo-Helix V is equipped with a user-friendly
mechanical seal in cartridge design and with a
standard Seal for easy maintenance
- The removal coupling (at ≥ 7.5 kW) enables the mechanical seal to be replaced without removing the motor
- The flexible lantern design, available in two orientations, enables direct access to the mechanical seal
- For the pump versions PN 16, PN 25 and Pmax = 30 bar, round counter flanges made of gray cast iron or stainless steel, screws, nuts and seals are available as accessories
- Bypass sets are available as accessories
- Wilo-Helix V(F) in VdS-certified version available on request.
Operating data
Flow medium: water 100%
Flow temperature: 20.00 °C
Concentration of the conveyed medium: 100.00%
Requested volume flow:
Requested delivery head:
Product data
Min. media temperature: -20 °C
Max. media temperature: 120 °C
Max. ambient temperature: 50 °C
Maximum operating pressure: 25 bar
Maximum inlet pressure: 10 bar
Minimum efficiency index (MEI): ≥ 0.7
Motor data
Mains connection: 3~400V/50 Hz
Voltage tolerance: +-10%
Rated motor power: 15 kW
Motor efficiency class: IE3
Rated current: 26.7 A
Rated speed: 2,900 rpm
Power factor: 0.88
Motor efficiency 50%: 90.2%
Motor efficiency 75%: 91.8%
Motor efficiency 100%: 91.9 %
Insulation class: F
Protection class: IP55
Materials
Pump housing: 1.4301
Impeller: 1.4307
Shaft: 1.4057
Shaft seal: BQ7EGG
Seal material: EPDM
Installation dimensions
Suction-side pipe connection: DN 50, PN 25
Pressure-side pipe connection: DN 50, PN 25
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