About Pump 4WN
4″ submerged well pump with stainless steel outer casing and Noryl floating impellers, available complete with oil bath motor. EBARA’s compliance with the NEMA standard for motor coupling ensures the product’s high reliability.
Features
- Silent
- Practical and easy to use
- Suitable for horizontal operation
description Pump 4WN
4″ submerged well pump equipped with a special system of Noryl floating impellers that allows an extremely abrasion-resistant configuration.
The 4WN is very quiet, suitable for horizontal operation and available complete with motor in water bath or oil bath.
EBARA’s compliance with the NEMA standard for motor coupling ensures the product’s high reliability.
For further technical information see the Databook
- Fountains and water features
- Power supply of autoclaves
- Firefighting systems
- Irrigation
- Pressurisation
Overview of technical data 4WN
| Flow rate | Up to 24 m³/h |
| Total head | Up to 300 m |
| Max. temperature of the liquid | +35°C (depends on the maximum motor temperature) |
| Poles | 2 |
| Insulation class | F |
| Protection degree | IP 68 |
| Voltage | Single-phase 1~230V +6-10% OYM Three-phase 3~400V +6-10% OY Single-phase 1~230V ±6% WYM Three-phase 3~400V ±6% WY |
| Max. immersion | 150 m |
| Max. sand content | 150 g/m3 |
Material Pump 4WN
| Impeller | PPO reinforced with glass fibres |
| Shaft | Stainless steel AISI 304 (EN 1.4301) |
| Outer casing | AISI 304 (EN 1.4301) |
| Discharge casing | AISI 304 (EN 1.4301) |
| Motor connection | AISI 304 (EN 1.4301) |
pump 4WN
4” submersible centrifugal pump
4” submersible centrifugal electric pump in AISI 304 with a thick outer stainless steel casing, the discharge casing and the lower support are made of micro-cast stainless steel, the stainless steel non-return valve, as well as the stages, the pump shaft, the coupling joint and the stainless steel filter grid. Floating Noryl impellers and glass fibre reinforced polycarbonate diffusers. Motor coupling in accordance with the NEMA standards. Particularly recommended for the movement of clear water in wells, the pressurisation of clean water for agricultural, domestic or industrial use, or for the irrigation and movement of water in gene.
PERFORMANCE CURVE SPECIFICATIONS
The specifications below qualify the curves shown on the following pages.
Tolerances according to ISO 9906 Annex A
The curves refer to effective speed of asynchronous motors at 50 Hz
Measurements were carried out with clean water at 20°C of temperature and with a kinematic viscosity
of = 1 mm2/s (1 cSt)
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 bestefficiency point.
Symbols explanation:
Q = volume flow rate
H = total head
P2 = pump power input (shaft power)
= pump efficiency
NPSH = net positive suction head required by the pump
MEI = minimum efficiency index
The minimun 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 3 to 289 m
- Capacity from 0.3 to 24 m3/h
- Maximum immersion 150 m
- Maximum liquid temperature 35°C
- Maximum sand content 50 gr/m3
- MEI > 0.4 (from 4WN1 to 4WN5)
| Pump type | POWER | Q=Capacity | ||||||
| | KW | HP | l/min 0 | 5 | 10 | 15 | 20 | 25 |
| m/h 0 | 0.3 | 0.6 | 0.9 | 1.2 | 1.5 | |||
| H=Total head | ||||||||
| 4WN1-10 | 0.37 | 0.50 | 67 | 63 | 55 | 46 | 33 | 18 |
| 4WN1-13 | 0.37 | 0.50 | 86 | 78 | 70 | 56 | 42 | 23 |
| 4WN1-19 | 0.55 | 0.75 | 126 | 118 | 105 | 86 | 60 | 30 |
| 4WN1-26 | 0.75 | 1 | 173 | 160 | 141 | 117 | 81 | 39 |
| 4WN1-38 | 1.10 | 1.50 | 253 | 234 | 208 | 169 | 117 | 52 |
| Pump type | POWER | Q=Capacity | |||||||
| | KW | HP | l/min 0 | 15 | 20 | 25 | 30 | 35 | 40 |
| m/h 0 | 0.9 | 1.2 | 1.5 | 1.8 | 2.1 | 2.4 | |||
| H=Total head | |||||||||
| 4WN2-5 | 0.37 | 0.50 | 34 | 32 | 31 | 29 | 27 | 25 | 23 |
| 4WN2-7 | 0.37 | 0.50 | 46 | 43 | 42 | 39 | 36 | 33 | 29 |
| 4WN2-10 | 0.55 | 0.75 | 67 | 64 | 61 | 58 | 54 | 49 | 43 |
| 4WN2-14 | 0.75 | 0.10 | 92 | 86 | 83 | 79 | 74 | 67 | 60 |
| 4WN2-20 | 1.10 | 1.50 | 139 | 131 | 127 | 120 | 111 | 101 | 90 |
| Pump type | POWER | Q=Capacity | ||||||||||
| | KW | HP | l/min 0 | 20 | 25 | 30 | 35 | 40 | 45 | 50 | 60 | 70 |
| m/h 0 | 1.2 | 1.5 | 1.8 | 2.1 | 2.4 | 2.7 | 3 | 3.6 | 4.2 | |||
| H=Total head | ||||||||||||
| 4WN3-5 | 0.37 | 0.50 | 34 | 32 | 31 | 30 | 29 | 27 | 25 | 23 | 18 | 11 |
| 4WN3-8 | 0.55 | 0.75 | 54 | 51 | 50 | 49 | 46 | 43 | 41 | 38 | 30 | 19 |
| 4WN3-11 | 0.75 | 1 | 72 | 68 | 66 | 64 | 61 | 58 | 54 | 49 | 38 | 26 |
| 4WN3-16 | 1.10 | 1.50 | 106 | 101 | 98 | 95 | 89 | 83 | 77 | 70 | 54 | 33 |
| 4WN3-21 | 1.50 | 2 | 142 | 135 | 132 | 127 | 122 | 115 | 108 | 100 | 79 | 49 |
| 4WN3-32 | 2.20 | 3 | 208 | 200 | 194 | 187 | 177 | 165 | 152 | 138 | 104 | 62 |
| Pump type | POWER | Q=Capacity | ||||||||||||
| | KW | HP | l/min 0 | 25 | 30 | 35 | 40 | 45 | 50 | 60 | 70 | 80 | 90 | 100 |
| m/h 0 | 1.5 | 1.8 | 2.1 | 2.4 | 2.7 | 3 | 3.6 | 4.2 | 4.8 | 5.4 | 6 | |||
| H=Total head | ||||||||||||||
| 4WN4-5 | 0.37 | 0.50 | 33 | 29 | 28 | 27 | 26 | 25 | 24 | 21 | 18 | 13 | 8 | 3 |
| 4WN4-7 | 0.55 | 0.75 | 46 | 43 | 42 | 41 | 39 | 38 | 36 | 33 | 28 | 22 | 15 | 7 |
| 4WN4-9 | 0.75 | 1 | 59 | 55 | 54 | 52 | 51 | 49 | 47 | 43 | 37 | 28 | 20 | 10 |
| 4WN4-14 | 1.10 | 1.50 | 93 | 87 | 86 | 83 | 81 | 79 | 76 | 68 | 58 | 47 | 33 | 20 |
| 4WN4-18 | 1.50 | 2 | 120 | 113 | 111 | 108 | 105 | 102 | 98 | 88 | 75 | 60 | 42 | 25 |
| 4WN4-27 | 2.20 | 3 | 175 | 164 | 161 | 157 | 152 | 147 | 141 | 127 | 109 | 87 | 61 | 35 |
| 4WN4-35 | 3 | 4 | 228 | 212 | 208 | 203 | 197 | 191 | 184 | 166 | 145 | 119 | 85 | 46 |
| 4WN4-44 | 3.70 | 5 | 282 | 261 | 255 | 249 | 241 | 233 | 223 | 201 | 173 | 140 | 99 | 52 |
| 4WN4-48 | 4 | 5.50 | 309 | 289 | 283 | 276 | 267 | 258 | 248 | 225 | 197 | 162 | 120 | 73 |
