Highly efficient high-pressure multistage centrifugal pump in vertical design with in-line connections.
The non self-priming high-pressure multistage centrifugal pump has a particularly compact overall design. The pump shaft and the motor shaft of the IEC standard motor are connected by means of a clamp coupling. A separate lantern roller bearing ensures optimum admission of axial thrusts.
Intermediate bearings in the hydraulics and corrosion-resistant shaft due to stainless steel sleeve ensure a long service life.
The pump housing and lantern are cataphoretic-coated.
Special, permanently attached lifting eyes enable easy pump installation.
The pump is suitable for water distribution and pressure boosting, industrial recirculation systems, process water and closed cooling circuits. It can also be used in fire extinguishing systems, washing systems as well as for irrigation.
Special features/product advantages
– Efficiency-optimised, laser-welded 2D/3D hydraulics
– Corrosion-resistant impellers, guide vanes and stage housings
– Flow and degassing-optimised hydraulic parts
– Reinforced pump housing, flow and NPSH optimised
– Space-saving and easy maintenance due to the compact design
– Particularly sturdy coupling guard
Scope of delivery
– Wilo-Helix FIRST V high-pressure multistage centrifugal pump
– Installation and operating instructions
– PN16 version with oval flanges: Cast iron counter flanges with the corresponding screws, nuts and gaskets
Design notes
– Motor protection is to be provided on request or onsite.
– In its standard position, the terminal box is aligned with the suction flange, but this can be changed if necessary.
– The Wilo-Helix FIRST V is equipped with a standard mechanical seal
– For pump versions PN16, PN25 and Pmax = 30 bar, round counter flanges in cast iron or stainless steel, screws, nuts and gaskets are available as accessories.
– Bypass sets are available as accessories.
– The Wilo-Helix V in ATEX version upon request
Operating Data
Fluid media: Water 100 %
Fluid temperature: 20.00 °C
Fluid concentration: 100.00 %
Requested flow:
Requested head:
Product data
Min. fluid temperature: -20 °C
Max. fluid temperature: 120 °C
Max. ambient temperature: 50 °C
Maximum operating pressure: 16 bar
Maximum inlet pressure: 1,000 kPa
Minimum efficiency index (MEI): ≥ 0.7
Motor data
Mains connection: 3~400V/50 Hz
Voltage tolerance: +-10 %
Rated power: 0.55 kW
Motor efficiency class: IE2
Rated current: 1.32 A
Rated speed: 2,900 1/min
Power factor: 0.85
Motor efficiency 50%: 72.8 %
Motor efficiency 75%: 76.7 %
Motor efficiency 100%: 77.2 %
Insulation class: F
Protection class: IP55
Materials
Pump housing: 5.1301/EN-GJL-250
Impeller: 1.4307
Shaft: 1.4301
Shaft seal: BQ7EGG
Gasket material: EPDM
Stage chamber material: 1.4301
Installation dimensions
Pipe connection on the suction side: DN 32, PN 25
Pipe connection on the discharge side: DN 32, PN 25
Ordering information
Brand: Wilo
Product description: Helix FIRST V 602-5/25/E/S/400-50
Net weight, approx.: 27.3 kg
Article number: 4201127
