Axial Plunger High Pressure Pump
FG Water AXP 3.5–4.0 Axial Piston Pumps – Oil-Free High-Pressure Pumps for RO Systems, up to 80 Bar
1. Product OverviewThe FG Water AXP 3.5–4.0 range comprises liquid-lubricated axial piston pumps for high-pressure feed delivery in reverse osmosis and industrial membrane systems.The range includes AXP 3.5 and AXP 4.0. Both models support continuous outlet pressures up to 80 bar and use shaft-spee
1. Product Overview
The FG Water AXP 3.5–4.0 range comprises liquid-lubricated axial piston pumps for high-pressure feed delivery in reverse osmosis and industrial membrane systems.
The range includes AXP 3.5 and AXP 4.0. Both models support continuous outlet pressures up to 80 bar and use shaft-speed adjustment to regulate flow.
Pump heads or configured motor-pump assemblies can be selected to suit the project’s installation and drive requirements.
2. PRODUCT SPECIFICATIONS
| Parameter | AXP 3.5 | AXP 4.0 |
|---|---|---|
| Geometric Displacement | 25 cm³/rev | 32 cm³/rev |
| Catalogue Rated Flow | 3.5 m³/h | 4.0 m³/h |
| Catalogue Reference Speed | 1,650 rpm | 1,800 rpm |
| Pump Weight | 18 kg | 18 kg |
| Inlet Connection | G1¼″ | G1¼″ |
| Outlet Connection | G¾″ | G¾″ |
| Integrated Flushing Check Valve | Included | Included |
Selection note: Verify the required flow against the model-specific performance curve before finalizing the drive configuration.
AXP3.5～4.0 flow curve at 80bar
3. OPERATING PARAMETERS
| Parameter | AXP 3.5 | AXP 4.0 |
|---|---|---|
| Outlet Pressure Range | 20–80 bar | 20–80 bar |
| Inlet Pressure Range | 2–5 bar | 2–5 bar |
| Continuous Speed Range | 700–1,650 rpm | 700–1,800 rpm |
| Fluid Temperature | 2–50°C* | 2–50°C* |
| Ambient Temperature | 0–50°C | 0–50°C |
Permissible fluid temperature depends on salinity and material compatibility.
Maintain adequate inlet pressure, provide suitable filtration, and prevent dry running. Fresh-water flushing is recommended after high-salinity operation.
4. Key Features & Benefits
Oil-free pumping principle: Uses process liquid for internal lubrication.
High-pressure capability: Supports continuous operation up to 80 bar.
Adjustable duty: Shaft-speed control allows flow adjustment within model limits.
Compact installation: Supports pump-head and motor-pump assembly configurations.
Integrated flushing valve: Helps simplify membrane-system flushing.
5. Key Applications
Modular SWRO systems.
Brackish water reverse osmosis.
Industrial wastewater membrane concentration.
Compatible process-liquid membrane separation.
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