Pallas ULP 4040 4" x 40" Reverse Osmosis Membrane Element
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Technical Resources
Pallas ULP 4040 4" x 40" Reverse Osmosis Membrane Element
Pallas ULP 4040 4" x 40" Reverse Osmosis Membrane Element
High Performance ULP 4040 Reverse Osmosis Membrane
The Pallas ULP 4040 reverse osmosis membrane is a premium 4" x 40" membrane element designed to deliver exceptional water purification while operating at ultra-low pressure. Offering high permeate flow and excellent salt rejection, it provides an energy-efficient solution for commercial and industrial reverse osmosis systems.
Suitable for drinking water production, process water treatment and a wide range of industrial applications, the ULP 4040 membrane combines reliable performance with low operating costs.
Why Choose the Pallas ULP 4040?
- High production capacity
- Ultra-low pressure operation reduces energy consumption
- Stable 99.5% salt rejection
- Fits all standard 4040 membrane housings
- Excellent performance for commercial RO systems
- Long service life with correct pre-treatment
- Suitable for municipal and low salinity feed water
Applications
The ULP 4040 membrane is ideal for:
- Commercial reverse osmosis systems
- Drinking water purification
- Food & beverage production
- Pharmaceutical water treatment
- Laboratory water systems
- Boiler feed water
- Process water treatment
- Light industrial applications
Key Features
- Ultra-low pressure membrane technology
- High permeate production of 10.2 m³/day (2,700 GPD)
- Stable 99.5% salt rejection
- Minimum salt rejection of 99.2%
- Large active membrane area for maximum productivity
- Compatible with standard 4040 pressure vessels
- Designed for consistent long-term performance
Technical Specifications
| Specification | Value |
|---|---|
| Product | Pallas ULP 4040 |
| Membrane Size | 4" x 40" |
| Permeate Flow | 10.2 m³/day (2,700 GPD) |
| Stable Salt Rejection | 99.5% |
| Minimum Salt Rejection | 99.2% |
| Active Membrane Area | 8.7 m² (94 ft²) |
| Feed Spacer | 28 mil |
| Maximum Operating Pressure | 600 psi |
| Maximum Operating Temperature | 45°C |
| Operating pH Range | 2–11 |
| Cleaning pH Range | 1–13 |
| Maximum Pressure Drop | 15 psi |
| Maximum SDI | 5 |
| Residual Chlorine | <0.1 ppm |
Technical data taken from the manufacturer's datasheet.
Standard Test Conditions
Performance figures are based on the following operating conditions:
- Feed Water NaCl Concentration: 2,000 ppm
- Test Pressure: 150 psi
- Water Temperature: 25°C
- Feed Water pH: 7–8
- Recovery Rate: 15%
Actual performance may vary depending on feed water quality and operating conditions. Membrane performance should be assessed after 24–48 hours of continuous operation. Individual membrane flow rates may vary by ±15%.
Compatible Systems
The Pallas ULP 4040 is compatible with most standard 4040 reverse osmosis membrane housings, making it an excellent replacement for many leading membrane brands used in commercial water treatment equipment.
Benefits of Choosing the Pallas ULP 4040
Choosing the ULP 4040 membrane helps reduce operating costs by delivering high-quality purified water at lower operating pressures. Its excellent salt rejection, dependable flow rate and compatibility with standard 4040 systems make it an ideal choice for new installations and replacement applications alike.
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