Pedrollo 4-BLOCK Series 4" Submersible Electric Pumps

Electrobombas sumergibles monobloque de 4"

General Description

The 4-BLOCK series by Pedrollo are 4-inch submersible monoblock electric pumps made of stainless steel. They are designed for installation with an integrated capacitor and thermal motor protector. These pumps feature a patented hydraulic system with independent floating impellers, making them highly resistant to sand (up to 200 g/m³). Their hydraulic systems exceed minimum efficiency index (MEI) requirements set by the ErP directive. They offer maximum performance for their type and come with a standard 20-meter power cable.

Applications: Recommended for supplying clean water, even with sand content, from wells. Their efficiency, reliability, and ease of installation make them suitable for domestic, civil, and agricultural sectors, including automatic water distribution with pressure tanks and irrigation.

Key Features:

Stainless steel construction
Sand resistance up to 200 g/m³
High efficiency hydraulic system
Integrated capacitor and thermal motor protection
Suitable for continuous duty (S1)
Available for vertical and horizontal operation
Standard 20m power cable (30m available on request)

Performance Range (Campo de Prestaciones) - 60 Hz

The following tables and curves illustrate the performance characteristics of the 4-BLOCK series pumps at 60 Hz.

4-BLOCK 2 Performance Curve

(Diagram showing Head (H) in meters vs. Flow Rate (Q) in l/min and m³/h for models 4BLOCKm 2/4, 2/6, 2/8, 2/11)

4-BLOCK 2 Specifications Table

Tipo	Potencia (P2)		m³/h	0	0.6	1.2	1.8	2.4	3	3.6	4.5
Monofásico	kW	HP	l/min	0	10	20	30	40	50	60	75
4-BLOCKm 2/4	0.37	0.50	45	43.5	41.5	38.5	35	31	25.5	15
4-BLOCKm 2/6	0.55	0.75	67.5	65.5	62	58	53	46	38	22.5
4-BLOCKm 2/8	0.75	1	90	87	83	77	70	61.5	50.5	30
4-BLOCKm 2/11	1.1	1.5	124	120	114	107	97	85	69.5	41

4-BLOCK 4 Performance Curve

(Diagram showing Head (H) in meters vs. Flow Rate (Q) in l/min and m³/h for models 4BLOCKm 4/3, 4/4, 4/5, 4/7)

4-BLOCK 4 Specifications Table

Tipo	Potencia (P2)		m³/h	0	1.2	1.8	2.4	3	3.6	4.2	4.8	5.4	6	7.2
Monofásico	kW	HP	l/min	0	20	30	40	50	60	70	80	90	100	120
4-BLOCKm 4/3	0.37	0.50	34.5	33	32	31	29.5	28	26.4	24.2	21.7	18.7	11
4-BLOCKm 4/4	0.55	0.75	45.5	43.5	42.5	41	39.5	37.5	35	32.5	29	24.9	15
4-BLOCKm 4/5	0.75	1	57	54.5	53	51.5	49.5	47	44	40.5	36	31	18.5
4-BLOCKm 4/7	1.1	1.5	80	77	75	72	69	65.5	61.5	56.5	50.5	43.5	26

4-BLOCK 6 Performance Curve

(Diagram showing Head (H) in meters vs. Flow Rate (Q) in l/min and m³/h for models 4BLOCKm 6/2, 6/3, 6/4, 6/6)

4-BLOCK 6 Specifications Table

Tipo	Potencia (P2)		m³/h	0	1.5	3	4.5	6	7.5	9	10.2
Monofásico	kW	HP	l/min	0	25	50	75	100	125	150	170
4-BLOCKm 6/2	0.37	0.50	19	18.5	17.8	16.8	15.2	13.2	10.4	7.5
4-BLOCKm 6/3	0.55	0.75	28.5	28	26.7	25.2	22.9	19.7	15.6	11.5
4-BLOCKm 6/4	0.75	1	38	37	35.5	33.5	30.5	26.3	20.8	15.5
4-BLOCKm 6/6	1.1	1.5	57	55.5	53.5	50.5	45.5	39.5	31.5	23

4-BLOCK 8 Performance Curve

(Diagram showing Head (H) in meters vs. Flow Rate (Q) in l/min and m³/h for models 4BLOCKm 8/2, 8/3, 8/4)

4-BLOCK 8 Specifications Table

Tipo	Potencia (P2)		m³/h	0	2.4	3.6	4.5	6	7.5	9	10.5	12	13.5
Monofásico	kW	HP	l/min	0	40	60	75	100	125	150	175	200	225
4-BLOCKm 8/2	0.55	0.75	20.5	19.5	19.2	18.7	17.6	16.2	14.5	12.3	9.6	6.5
4-BLOCKm 8/3	0.75	1	30.5	29.5	29	28	26.4	24.3	21.7	18.4	14.4	9.5
4-BLOCKm 8/4	1.1	1.5	40.5	39.5	38.5	37.5	35	32.5	29	24.6	19.2	13

Note: Performance tolerance according to EN ISO 9906 Grade 3B.

Construction Characteristics (Características Constructivas)

The pumps are constructed with high-quality materials for durability and performance.

1 Impeller body and pump casing: AISI 304 stainless steel with thread according to ISO 228/1.
2 Pump bearing: EPDM.
3 Impellers: Delrin®.
4 Diffusers: Noryl™.
5 Stage housing: AISI 304 stainless steel.
6 Pump shaft: AISI 304 stainless steel.
7 Cable protector: AISI 304 stainless steel.
8 Filter: AISI 304 stainless steel.
9 Coupling support: Technopolymer and brass.
10 Motor shaft: AISI 431 stainless steel.
11 Motor casing: AISI 304 stainless steel.
12 Mechanical seal: Seal: ST4-16, Shaft: Ø 16 mm. Materials: Ceramic / Graphite / NBR.
13 Capacitor: Built-in motor capacitor.
14 Electric motor: Specially dimensioned submersible motor, suitable for continuous service, in a rewound oil bath (non-toxic oil). Monophasic 220 V - 60 Hz. Integrated thermal motor protection in the winding. Continuous service S1. Insulation class F. Protection IP X8.
15 Compensation diaphragm.
16 Power cable: DRINCABLE® HRC type, approved for use in drinking water by the "ACS" body according to XP P 41-250, approval no. 18 MAT NY 156. Standard length 20 meters.

Dimensions and Weights (Dimensiones y Pesos)

Tipo	Boca DN	DIMENSIONES mm			kg
		Ø	h		1~
4-BLOCKm 2/4	4	560	10.4
4-BLOCKm 2/6	6	596	11.2
4-BLOCKm 2/8	8	656	12.7
4-BLOCKm 2/11	11	766	15.7
4-BLOCKm 4/3	3	551	10.3
4-BLOCKm 4/4	4	576	10.8
4-BLOCKm 4/5	5	621	12
4-BLOCKm 4/7	1 1/4"	7	100	721	14.8
4-BLOCKm 6/2	2	539	10.0
4-BLOCKm 6/3	3	571	10.6
4-BLOCKm 6/4	4	622	11.9
4-BLOCKm 6/6	6	735	14.3
4-BLOCKm 8/2	2	539	10.0
4-BLOCKm 8/3	3	591	11.3
4-BLOCKm 8/4	4	672	13.1

Power Consumption (Consumos)

Tipo		TENSIÓN
Monofásico		220 V
4-BLOCKm – 0.37 kW		4.0 A
4-BLOCKm – 0.55 kW		4.7 A
4-BLOCKm – 0.75 kW		6.6 A
4-BLOCKm – 1.1 kW		8.3 A

Palletization (Paletización)

TIPO	GROUPAGE	CONTAINER
	n° bombas	n° bombas
Monofásico
4-BLOCKm 2	55	80
4-BLOCKm 4	55	80
4-BLOCKm 6	55	80
4-BLOCKm 8	55	80

Typical Installation

(Diagram showing a typical installation setup for the submersible pump in a well, including static and dynamic water levels, and a schematic of the pump assembly.)

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