Name: Pedrollo F4-50/125B Three Phase 2103330
Brand: Pedrollo
SKU: 2103330
Price: 1447.8 GBP
Availability: InStock

In stock

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Established 1975
Trusted by thousands of customers

The Pedrollo F4-50/125B is a 0.55 kW (0.75 HP) EN 733 standardised centrifugal pump with a 4-pole 1,450 rpm motor on a 400 V three-phase supply, delivering up to 600 l/min and 5 m head. Close-coupled monoblock with flanged connections.

Part of Pedrollo’s F4 range: the slow-speed version of the F, for quiet circulation and transfer duties. Counter flanges available on request.

600l/min

Max flow

Max head

0.55kW

0.75 HP

400V

Three Phase

EN 733 standardisedFlanged DN 32–1004-pole 1,450 rpmQuiet runningCast iron or AISI 316 (-I)Code 2103330

Full Description

More about this product

Full Description

Product overview

The Pedrollo F4-50/125B is a 0.55 kW (0.75 HP) single-impeller centrifugal pump on a 400 V three-phase supply, built to EN 733 dimensions with flanged suction and delivery and a 4-pole motor running at 1,450 rpm. It covers 150 to 600 l/min with a working head of 5 m down to 2 m.

Running at half the speed of the 2-pole F range makes the F4 noticeably quieter, gentler on seals and bearings, and better able to draw from a low suction head. It suits circulation in heating and cooling plant, water transfer and process duties where high flow at modest head is wanted without the noise of a 2-pole pump. Install indoors or under cover.

600l/min

Max flow

Max head

0.55kW

0.75 HP

400V

Three Phase

Key features

4-pole, 1,450 rpm

Quiet, low-wear running with low NPSH requirement.

EN 733 standard

Interchangeable with other standardised pumps of the same size.

Close-coupled

Impeller on the motor shaft. No coupling or alignment.

Flanged connections

Flanged suction and delivery; counter flanges available on request.

Cast iron body

Heavy-duty cast iron. -I versions in cast AISI 316 stainless steel.

Three-phase

400 V three-phase motors, IE3 on the larger sizes.

Typical applications

HVAC circulation

Heating, chilled water and cooling tower circulation.

Water transfer

Tanks, reservoirs and treatment plant.

Industrial process

Cooling and process water where quiet running matters.

Irrigation

Low-head irrigation and distribution.

Technical specifications

Brand / Series	Pedrollo — F4
Model	F4-50/125B
Pedrollo code	2103330
Supply	400 V three-phase
Motor power (P2)	0.55 kW / 0.75 HP
Motor	Three-phase motor (IE2 or IE3 class to IEC 60034-30-1, by size)
Flow range	150–600 l/min
Head range	5–2 m
Pump body	Cast iron
Impeller	Brass or cast iron, by size
Delivery flange	DN 50 (EN 733 dimensions)
Counter flanges	Not included — counter flanges available on request
Protection	IP X5
Liquid	Clean water, not chemically aggressive to the pump materials
Duty	Continuous S1

F4 DN 50 sizes

Model	Code	Supply	Power	Flow	Head
F4 50/160B-I	2111900	Three Phase	0.75 kW / 1 HP	150–650 l/min	8–3.8 m
F4 50/160A-I	2111910	Three Phase	1.1 kW / 1.5 HP	150–700 l/min	9.3–4.5 m
F4-50/125B	2103330	Three Phase	0.55 kW / 0.75 HP	150–600 l/min	5–2 m
F4-50/125A	2103340	Three Phase	0.55 kW / 0.75 HP	150–600 l/min	6–3 m
F4-50/160B	2103350	Three Phase	0.75 kW / 1 HP	150–650 l/min	8–3.8 m
F4-50/160A	2103360	Three Phase	1.1 kW / 1.5 HP	150–700 l/min	9.3–4.5 m
F4-50/200C	2103370	Three Phase	1.5 kW / 2 HP	200–850 l/min	11–7.5 m
F4-50/200B	2103380	Three Phase	2.2 kW / 3 HP	200–850 l/min	13–9.5 m
F4-50/200A	2103390	Three Phase	2.2 kW / 3 HP	200–900 l/min	15–11.2 m
F4-50/200AR	2103400	Three Phase	3 kW / 4 HP	200–900 l/min	17–13.2 m
F4-50/250D	2103410	Three Phase	1.1 kW / 1.5 HP	150–650 l/min	12.5–5 m
F4-50/250C	2103420	Three Phase	1.5 kW / 2 HP	150–700 l/min	14–5 m
F4-50/250B	2103430	Three Phase	2.2 kW / 3 HP	150–700 l/min	18–10.5 m
F4-50/250A	2103440	Three Phase	2.2 kW / 3 HP	150–700 l/min	20–13 m
F4-50/250AR	2103450	Three Phase	3 kW / 4 HP	150–700 l/min	23.5–17 m

Head shown as the working range from minimum to maximum flow. Performance to Pedrollo 50 Hz data.

Frequently asked questions

Why choose the F4 over the F?

Lower speed means less noise, longer seal and bearing life and a lower NPSH requirement, so it copes better with poor suction conditions. The trade-off is lower head for the same pump size.

What does EN 733 mean?

EN 733 (formerly DIN 24255) sets the dimensions and flange sizes of standardised centrifugal pumps, so the F4 fits the same pipework as any other EN 733 pump of that size.

Are the flanges included?

No. Counter flanges, nuts, bolts and gaskets are available separately — ask us when ordering.

What is the -I version?

The same pump with the body cast in AISI 316 stainless steel and a stainless impeller, for aggressive, treated or sea water.

Downloads

Data Sheet PDF
Download

Delivery Information

Standard delivery:
Standard delivery is free on most orders. Some items may incur a delivery charge depending on weight, size or value. Any applicable charge will be displayed at checkout.

Deliveries will typically be made between 7am and 6pm, Monday to Friday (excluding public holidays).

Next day delivery:
Next working day delivery is available for a £16.50 + VAT delivery charge.

Orders must be placed before 12 noon to qualify for next working day delivery. Orders placed after 12 noon on Thursday but before noon on Friday will be delivered the following Monday. Orders placed after 12 noon on Friday will be delivered on Tuesday.

Pallet/Large/Difficult items:
Some large, heavy or difficult to transport items may incur an additional delivery charge. Please contact us for a delivery quote before ordering.