About Pump 4BHS
4″ submerged well pump completely made of AISI 304 (hydraulic only), reliable, efficient and corrosion resistant. It is suitable for coupling with 4″ motors in compliance with the NEMA standard. Suitable for domestic, agricultural and industrial water supply systems
Features
- Silent
- Practical and easy to use
- Sturdy design, corrosion resistant
description Pump 4BHS
4″ submerged well pump made entirely of AISI 304 (hydraulic only), reliable, efficient and corrosion-resistant with exceptional efficiency due to the smooth surfaces of the impellers and diffusers.
The 4BHS is suitable for coupling with 4″ motors always in compliance with the NEMA standard.
For further technical information see the Databook
- Domestic, agricultural and industrial water supply systems
- Firefighting, irrigation and pressurisation systems
- Washing
- Handling of clear water in general
Overview of technical data 4BHS
| Flow rate | Up to 18 m³/h |
| Total head | Up to 260 m |
| Max. temperature of the liquid | +30°C |
| Poles | 2 |
| Insulation class | B (with motor in water bath) F (with motor in oil bath) |
| Protection degree | IP 58 (OY), IP 68 (WY) |
| Voltage | Single-phase 1~230V (±10%) OYM Three-phase 3~380-415V (±10%) OY Single-phase 1~230V (-10%+6%) WYM Three-phase 3~380-415V (-10%+6%) WY |
| Max. immersion | 350 m with motor in water bath 150 m with motor in oil bath |
| Max. sand content | 50 ppm |
Material Pump 4BHS
| Impeller | AISI 304 (EN 1.4301) |
| Shaft | Stainless steel 316 (EN 1.4401) |
| Outer casing | AISI 304 (EN 1.4301) |
| Discharge casing | AISI 304 (EN 1.4301) |
| Motor connection | AISI 304 (EN 1.4301) |
pump 4BHS
PERFORMANCE CURVE SPECIFICATIONS
The specifications below qualify the curves shown on the following pages.
Tolerances according to ISO 9906:2012 – Grade 3B
The curves refer to effective speed of asynchronous motors at 50 Hz, 2 poles.
Measurements were carried out with clean water at 20°C of temperature and with a kinematic viscosity
of ν = 1 mm2/s (1 cSt)
During the pump selection,consider to get a safety margin of at least 0.5 m.
The continuous curves indicate the recommended working range. The dotted curve is only a guide.
In order to avoid the risk of over-heating, the pumps should not be used at a flow rate below 10% of best efficiency point.
Symbols explanation:
Q = volume flow rate
H = total head
P2 = pump power input (shaft power)
η = pump efficiency
MEI = minimum efficiency index
The minimum efficiency index (MEI) is a measure of the quality of a pump size in respect to its mean efficiency. The minimum efficiency index is based on the hydraulic efficiency and on the head at the best efficiency point.
The efficiency of a pump with trimmed impeller is usually lower than that of a pump with the full impeller diameter. The trimming of the impeller will adapt the pump to a fixed duty point, leading to reduced energy consumption. The minimum efficiency index (MEI) is based on the full impeller diameter. The operation of these water pumps with variabile duty points may be more efficient end economic when controlled, for example, by the use of a variable speed drive that matches the pump duty to the system.
Technical
- Total head from 9.1 to 260 m
- Capacity from 0.9 to 18 m3/h
- Maximum immersion 350 m (water filled motor)
150 m (oil filled motor) - Maximum liquid temperature 30°C
- Maximum sand content 50 ppm
- Maximum chlorine content 500 ppm
- MEI > 0.4 (only for 4BHS 2 – 4 – 7)
4” submersible centrifugal pump
4” submersible centrifugal electric pump made entirely of AISI 304 stainless steel. Suitable for coupling with NEMA-compliant motors. The discharge casing and the motor support are made of molded stainless steel. Support, openings, joint, impeller, diffuser, valve, stages, tie rods and cable cover in EN 1.4301 (AISI 304). The shim ring in EN 14.301 (AISI 304) + EPDM while the shaft in EN 1.4401 (AISI 316). Radial bearings, axial bearings and thrust bearing are made of tungsten carbide. Suitable for domestic, agricultural and industrial water supply systems, pressurisation systems, for fire-fighting, irrigation, washing for and clear water movement in general.
Pump type | KW | Capacitor | Absorbed Current (A) | l/min | Q=Capacity | |||||||||||
Single-phase 230V 50HZ | Three-phase 400V 50HZ | µF | Vc | 1~ | 3~ | 20 | 80 | 120 | 170 | 260 | 280 | 330 | 360 | 0 | ||
m/h | 1.2 | 4.8 | 7.2 | 10.2 | 15.6 | 16.8 | 19.8 | 21.6 | 0 | |||||||
H=Total Head | ||||||||||||||||
Best 2 M | Best 2 | 0.55 | 16 | 450 | 4.4 | 2.0 |
| 12.2 | 9.8 | 8.3 | 6.3 | 2.9 | – | – | – | – |
Best 3 M | Best 3 | 0.75 | 20 | 450 | 5.6 | 2.4 |
| 13.6 | 11.1 | 9.5 | 7.6 | 4 | 3.2 | – | – | – |
Best 4 M | Best 4 | 1.1 | 31.5 | 450 | 7.3 | 3.0 |
| 17.4 | 15 | 13.4 | 11.3 | 7.5 | 6.7 | 4.6 | – | – |
Best | Best 5 | 1.5 | – | – | – | 3.3 |
| 18.4 | 16.1 | 14.5 | 12.5 | 9 | 8 | 3 | 5 | – |
