Horizontal, multi-level, highly-efficient and non self-priming high-pressure multistage centrifugal pump with offline connections.
This non self-priming high-pressure multistage centrifugal pump has a compact design and is particularly efficient and user friendly. The standard-mounted IEC standard motor equipped with a PTC sensor, and our proprietary hydraulics ensure extremely high efficiency. It can be equipped with a stuffing box packing upon request, which can be swapped out without dismantling the pump thanks to its exclusive Twinner System packing construction.
Applications
The pump is suitable for use in professional irrigation/agriculture, water supply, pressure boosting, fire fighting and in the area of heating, air conditioning, cooling.
Special features / product benefits
– Extremely efficient hydraulics and highly-efficient motor (≤ 55 kW: IE3, ≥ 75 kW: IE4) with standard-mounted PTC sensor
– Pump set standard mounted with rigid coupling between motor and hydraulics and with mechanical seal
– Standard-mounted bypass flushing device guarantees a long service life for the mechanical seal
– Clever flange positioning and stuffing box gland upon request
– Bronze impellers upon request for high reliability
Scope of delivery
– Pump set for horizontal installation including motor, coupling, baseplate and pump
– Installation and operating instructions
Materials
Pump housing: EN-GJL-250/EN-GJS-400-15
Shaft: 1.4028
Shaft seal: U2BPFG
Impeller: EN-GJL-200
Stage chamber material: EN-GJS-500-7
Operating Data
Fluid media: Water 100 %
Fluid temperature: 20.00 °C
Fluid concentration: 100.00 %
Requested flow:
Requested head:
Min. fluid temperature: -5 °C
Max. fluid temperature: 90 °C
Maximum operating pressure: 50 bar
Max. ambient temperature: 40 °C
Motor data
Mains connection: 3~400V/50 Hz
Shaft power P2(Q=max.) of selected impeller * number of pumps: 62.91 kW
Activation type: Direct On Line (DOL)
Rated speed: 2,900 1/min
Rated current: 67.8 A
Protection class motor: IP55
Motor efficiency 50%: 92.6 %
Motor efficiency 75%: 93.8 %
Motor efficiency 100%: 93.8 %
Power factor: 0.84
Motor protection: PTC
Installation dimensions
Pipe connection on the suction side: DN 65, PN 25
Pipe connection on the discharge side: DN 50, PN 63
Ordering information
Net weight, approx.: 542 kg
Brand: Wilo
Product description: Zeox-FIRST H 4211-37-2
Article number: 4191825
