ALGO Xstream 403S – VFD Constant Pressure Booster Pump
The ALGO Xstream 403S is a Variable Frequency Drive (VFD) constant pressure booster pump designed to provide stable and consistent water pressure as demand changes. Its intelligent variable-speed control adjusts pump operation automatically, making it an efficient solution for residential, commercial and general water pressure boosting applications.
The Xstream 403S features a 750 W, 220 V single-phase motor, delivering a rated flow of 4 m³/h at a rated head of 30 metres. With a maximum head of 37 metres and maximum flow of 8 m³/h, it provides dependable performance for applications requiring automatic and consistent water pressure.
Key Features
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750 W VFD constant pressure booster pump
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220 V single-phase operation
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Built-in Variable Frequency Drive (VFD)
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Automatic constant-pressure operation
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Adjusts pump performance according to water demand
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Rated head of 30 m
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Rated flow of 4 m³/h
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Maximum head of 37 m
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Maximum flow of 8 m³/h
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4000 rpm operating speed
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1¼" × 1" connections
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Adjustable pressure setting from 2–5 bar
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24V, 4–20mA pressure transmitter
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Integrated 2 L pressure tank
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IP54 protection
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NSK bearings
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SS304 hydraulic components
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SiC / Graphite mechanical seal
Technical Specifications
| Specification | Details |
|---|---|
| Brand | ALGO |
| Series | Xstream |
| Model | Xstream 403S |
| Product Type | VFD Constant Pressure Booster Pump |
| Power | 750 W |
| Voltage | 220 V |
| Phase | Single Phase |
| Motor Input Current | 6.2 A |
| Controller Input Current | 7.6 A |
| Rated Head | 30 m |
| Maximum Head | 37 m |
| Rated Flow | 4 m³/h |
| Maximum Flow | 8 m³/h |
| Motor Speed | 4000 rpm |
| Connection Size | 1¼" × 1" |
| Pressure Setting Range | 2–5 Bar |
| Pressure Transmitter | 24V, 4–20mA |
| Protection | IP54 |
| Tank Size | 2 L |
| Ambient Temperature | 0–40°C |
| Liquid Temperature | 0–100°C |
| Bearing | NSK |
Materials of Construction
| Component | Material |
|---|---|
| Impeller | SS304 Stainless Steel |
| Diffuser | SS304 Stainless Steel |
| Pump Body | SS304 Stainless Steel |
| Shaft | SS304 Stainless Steel |
| Mechanical Seal | SiC / Graphite |
| 5-Way Connector | SS304 Stainless Steel |
Performance
| Performance Specification | Rating |
|---|---|
| Rated Flow | 4 m³/h |
| Rated Head | 30 m |
| Maximum Flow | 8 m³/h |
| Maximum Head | 37 m |
| Motor Speed | 4000 rpm |
Intelligent Constant Pressure Operation
The integrated VFD and pressure transmitter allow the Xstream 403S to respond automatically to changes in water demand. As outlets are opened or closed, the pump adjusts its operating speed to help maintain the selected pressure, providing a more consistent water supply while avoiding unnecessary full-speed operation.
Applications
Ideal for:
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Domestic water pressure boosting
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Residential water supply
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Commercial water supply
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Tank-to-house water supply
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Constant-pressure water systems
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Pressure boosting from storage tanks
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Water transfer systems
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General clean-water pumping
The ALGO Xstream 403S combines 750 W variable-speed operation, stainless steel hydraulic components and intelligent constant-pressure control to provide a compact and dependable solution for automatic water pressure boosting.
