ESHSeries Horizontal Centrifugal Pump

Horizontal Centrifugal Re-self-priming Pump ESH-series

Equipe Bombas has been designing equipment for the transportation of fluids since the 1970s. Many innovations developed during these years have become application standards in industries in general.

Our pieces of equipment operate in harsh industrial environments, in all types of industrial effluent control, sewage treatment pumping stations, suspended solids, corrosive and abrasive residues, etc.

They are manufactured in compliance with all requirements demanded by standards, following strict quality control in all stages of the process. The products are tested on a test bench, ensuring perfect operation and desired performance, according to the Hydraulic Institute or ISO 9906 gr. 2B.

Contact

[email protected]

55 (19) 3417-4848

Areas of usage:

  • Paper and Cellulose
  • Sugar and alcohol
  • Food, Automobile, and Chemical Plants
  • Steel plants
  • Agriculture
  • Livestock farming
  • Fish farming
  • Raw Water intake
  • Firefighting Systems
  • Canneries
  • Tanneries, etc.

Constructive Characteristics

Horizontal Re-self-priming pump with open impeller, suitable for pumping gridded raw sewage, liquids with suspended solids, industrial waste, and water.

Its advanced design allows the passage of solids up to Ø3″ (76.2mm). Axially positioned suction and radial discharge, with diameters from 2″ to 12″, for the Low-Pressure line (ESL) and diameters from 3″ to 6″ for High Pressure line (ESH). Execution according to ANSI.

The great advantage of this equipment is the automatic filling of liquid, for the start of the self-priming process.

The back part of the impeller is equipped with expulsion vanes, to reduce the pressure in the mechanical seal and the amount of material deposited in this region.

The mechanical design of the Back-Pull-Out system allows equipment maintenance without the need to remove the suction and discharge pipes. It provides easy access to the most important parts of the equipment, such as: drive shaft, mechanical seal, and impeller. Any intervention on the set is extremely simple and fast.

The pump has a large inspection cover, with simple and quick access to the impeller, volute, and flap-type check valve. It also makes it easier to inspect the parts that may wear out, as well as to carry out any maintenance, cleaning, and replacement of these parts very quickly. There is also a removable wear plate on the inspection cover.

The impeller on each pump model is unique, with no need to machine it to adapt the working point, because the flow and pressure are adjusted according to the rotation. This means fewer spare parts.

It can be driven by electric motor or internal combustion (diesel, gasoline, among others) engine.

The coupling, between the pump and the drive, can be made directly through flexible sleeves or pulleys and belts.

It stands out for its pumping efficiency and low operating and maintenance costs, compared to other pumping systems for the same purposes.

Body

Body made of FoNo and/or other alloys compatible with the pumped liquid. It has an internal finish with smooth walls, considerably reducing friction and drag losses. Provides greater efficiency and hydraulic performance.

Impeller

Open with double curvature multiple pallets being: 02 blades (ESL) or 05 blades (ESH).

It has a wide passage for solids with up to 3″. Static and dynamically balanced.

Available in various combinations of materials.

Shaft

SAE-4140 processed carbon steel construction, designed for heavy load regimes with high service factors, ensuring minimum deflections.

Automatic Valve

When the pump is started, the air contained in the suction piping is extracted by the air exhaust valve, which is normally open. As soon as liquid reaches the valve’s rear chamber, the valve closes automatically.

For the valve to open at standstill, a small leak was created to release the pressure at the back of the valve, allowing it to return to its initial position.

Because of this leakage, the valve discharge must have a return piping towards the suction well.

When the equipment is off, the solid particles that are in the rear part of the valve should accumulate in the lower rear part and, thus, be expelled at the next start-up, so observe the mounting position to avoid early clogging.

The air exhaust valve should be installed close to the check valve and at the highest point, ensuring that all air contained in the system is exhausted.

The valve will stay open if the design pressure is not reached or if the discharge pressure is too low (approximately 4 wcm). This valve’s operating pressure depends on the spring (the valve is manufactured with two spring models, being a weak spring for pressures up to 13 bar and a strong spring for pressures above 13 bar, according to the project data.

In the field, the spring pressure should be adjusted through the pin on the shaft, depending on the need.

The Auto-Release air valve is designed to release air for the self-priming at the pump start-up. After priming or full filling of the pump body, the valve closes to restrict the flow through the bypass.

When the pump stops, the valve automatically opens and is ready for the next priming cycle.

Air from the pump body passes through the valve during the preparation cycle.

When the pump is fully primed, the resulting pressure of the flow against the diaphragm compresses the spring and closes the valve, and it remains closed, reducing the liquid flow from 1 to 5 GPM (0.227 to 1.14 cu m/h).

When the pump shuts off, the spring returns the diaphragm to its original position.

Any solids that may have accumulated in the diaphragm chamber decant and are released during the next pumping cycle.

Always provide a purge line of at least 1″ for each valve.

Do not connect the purge line for multiple pump installations.

ESH-3

Flows: up to 85 cu m/h
Head: up to 60 m
Rotation: Variable
Weight: 265 kg
GD2:0.8 (kg. sq m)
Ø max. solids: 1”
Ø suction flange: 3” BSP
Ø discharge flange: 3” BSP Ø of impeller: 11”
Ø of drain connection: ¾” BSP

ESH-4

Flows: up to 180 cu m/h
Head:up to 60 m
Rotation: Variable
Weight: 310 kg
GD2: 1 (kg. sq m)
Ø max. solids: 1”
Ø suction flange: 4” BSP
Ø discharge flange: 4” BSP Ø of impeller: 11”
Ø of drain connection:1” BSP

ESH-6

Flows: up to 230 cu m/h
Head:up to 58 m
Rotation: Variable
Weight: 486 kg
GD2: 2.2 (kg. sq m)
Ø max. solids: 1”
Ø suction flange: 6” BSP
Ø discharge flange: 6” BSP
Ø of impeller: 317”
Ø of drain connection: 1” BSP

ESL-2

Flows: up to 45 cu m/h
Head: up to 34 m
Rotation: Variable
Weight: 110 kg
GD2: 0,17 (Kg.m2)
Ø max. solids: 1.1/2”
Ø suction flange: 2” NPT
Ø discharge flange: 2” NPT
Ø of impeller: 6 1/4”
Ø of drain connection: 3/8” NPT

ESL-3

Flows: up to 100 cu m/h
Head: up to 31 m Rotation: Variable
Weight: 195 kg
GD2: 0,4 (Kg.m2)
Ø max. solids: 2 1/2”
Ø suction flange: 3” BSP
Ø discharge flange: 3” BSP
Ø of impeller: 8 3/4”
Ø of drain connection: 1” BSP

ESL-4

Flows: up to 160 cu m/h
Head: up to 32 m
Rotation: Variable
Weight: 277 kg
GD2: 0,55 (Kg.m2)
Ø max. solids: 3”
Ø suction flange: 4” BSP
Ø discharge flange: 4” BSP
Ø of impeller: 9 3/4”
Ø of drain connection: 1 1/4” BSP

ESL-6

Flows: up to 310 cu m/h
Head: up to 28 m
Rotation: Variable
Weight: 456 kg
GD2: 1,7 (Kg.m2)
Ø max. solids: 3”
Ø suction flange: 6” BSP
Ø discharge flange: 6” BSP
Ø of impeller: 12 3/8”
Ø of drain connection: 1 1/4” BSP

ESL-8

Flows: up to 300 cu m/h
Head: up to 32 m
Rotation: Variable
Weight: 662 kg
GD2: 2.8 (Kg.m2)
Ø max. solids: 3”
Ø suction flange: 8” BSP
Ø discharge flange: 8” BSP
Ø of impeller: 14 3/4”
Ø of drain connection: 2” BSP

ESL-10

Flows: up to 715 cu m/h
Head: up to 36 m
Rotation: Variable
Weight: 703 kg
GD2: 4 (Kg.m2)
Ø max. solids: 3”
Ø suction flange: 10” BSP
Ø discharge flange: 10” BSP
Ø of impeller: 14 3/4”
Ø of drain connection: 2” BSP

ESL-12

Flows: up to 1050 cu m/h
Head: up to 36 m
Rotation: Variable
Weight: 1144 kg
GD2: 6 (Kg.m2)
Ø max. solids: 3”
Ø suction flange: 12” BSP
Ø discharge flange: 12” BSP
Ø of impeller: 18”
Ø of drain connection: 2” BSP