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-fighting systems, washing systems as well as for irrigation.
Special features/product advantages
– High efficiency thanks to IE3 fixed-speed motor
– Durable and robust due to the pump housing made of cast iron with cataphoretic coating and the laser-welded/casted stainless steel hydraulics (AISI 304)
– Space-saving thanks to compact design due to the integrated mechanical seal at an operating pressure of up to 16 bar (above with cartridge mechanical seal)
– Easy maintenance due to convenient access to pump components, such as the bearing integrated into the lantern, as well as the spacer coupling and cartridge mechanical seal (if used)
– Suitable for hot environments with a standard ambient temperature of up to 50 °C without power degradation
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 on-site.
– In its standard position, the terminal box is aligned with the suction flange, but this can be changed if necessary.
– For pump versions PN 16, PN 25 and Pmax = 30 bar, round counter flanges in cast iron or stainless steel, screws, nuts and seals are available as accessories.
– Bypass sets are available as accessories.
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
Min. ambient temperature: -15 °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: 22 kW
Motor efficiency class: IE3
Rated current: 39.1 A
Rated speed: 2,960 1/min
Power factor: 0.87
Motor efficiency 50%: 91.7 %
Motor efficiency 75%: 92.7 %
Motor efficiency 100%: 92.7 %
Insulation class:
Protection class:
Materials
Pump housing: 5.1301/EN-GJL-250
Impeller: 1.4408
Shaft: 1.4057
Shaft seal: Q7Q7
Gasket material: EPDM
Stage chamber material: 1.4301
Installation dimensions
Pipe connection on the suction side: DN 100, PN 16
Pipe connection on the discharge side: DN 100, PN 16
Ordering information
Brand: Wilo
Product description: Helix FIRST V 8004-5/16/E/KS/400-50-Q7
Net weight, approx.: 217 kg
Article number: 4267562
