The SpiroPure SP-ES8040 Energy Saving Industrial Reverse Osmosis Membrane Element 8 x 40 is a high quality low energy replacement membrane filter cartridge. The SP-ES8040 energy saving RO membrane is best suited for the application of treating very low salt content surface water treatment applications. Choose SpiroPure’s Low Energy RO Membrane 8040 as a compatible replacement for the Dupont Filmtec, Hydranautics Nitto, and Toray replacement RO membrane elements listed below.
Energy Saving RO Membrane Specifications:
- Nominal Size: 8" x 40"
- Certification: NSF 61 certified
- Salt Rejection Rate: 99.4%
- Average Permeate ±15%: 10,500 GPD @ 150 PSI
- Feedwater NaCl: 1,500 ppm
- Fresh Water Recovery Rate: 15%
- Feed Spacer: 34 mm
- Maximum Recommended NaCl: <5,000 ppm/li>
- Maximum Operating Pressure 600 PSI
SP-ES8040 Low Energy Membrane common applications:
- Very low salt content surface water treatment
- Production of purified water
- Boiler feed water
- Food processing
- Pharmaceutical manufacturing
SP-ES8040 Energy Saving Element compatible part numbers:
- Dupont Filmtec BW30XFRLE-400/34
- Hydranautics Nitto ESPA2-LD
- Toray TLF-400DG
FAQs on 8040 Industrial RO Membrane
What is an 8040 energy saving RO membrane?
An 8040 energy saving RO membrane is designed to deliver high-volume permeate output while requiring less operating pressure than a standard brackish water element. The SpiroPure SP-ES8040 reverse osmosis membrane measures 8" x 40" and is built for very low salt content surface water treatment.
What is the difference between 4040 and 8040 RO membranes?
The core difference is size and capacity: a 4040 measures 4" x 40" while an 8040 measures 8" x 40", roughly quadrupling membrane surface area and output. SpiroPure's energy saving low energy RO membrane line with a 34 mm feed spacer (to lower the resistance to water flow) is currently available only in the larger 8040 industrial size. Ultra low energy membranes run similar specs on a 28 mm feed spacer.
Is the SpiroPure SP-ES8040 suitable for low-salinity water?
Yes. The SP-ES8040 is specifically designed for very low salt content surface water treatment applications, tested against 1,500 ppm feedwater NaCl. Its high-efficiency spiral configuration delivers strong output while minimizing the pressure needed to treat lower-salinity sources.
What is the flow rate of the SpiroPure SP-ES8040 membrane?
The SpiroPure SP-ES8040 produces an average permeate output of 10,500 GPD (±15%) at 150 PSI, with a 15% fresh water recovery rate. This makes it a high-capacity option in SpiroPure's energy-conscious membrane lineup for input water quality conditions that benefit from the wider 34 mm feed spacer.
How long does an 8040 RO membrane last?
Most 8040 industrial RO membranes, including the SP-ES8040, last 2 to 4 years depending on feed water quality, usage volume, and pre-filtration. Poor pre-filtration or high sediment and chlorine loads can shorten that considerably, while proper maintenance extends it toward the higher end.
How much does the SpiroPure SP-ES8040 cost?
The SpiroPure SP-ES8040 RO membrane price is comparable to other SpiroPure 8040 industrial elements, which means OEM brand performance characteristics like 99.4% salt rejection without a brand-name markup. See this page for current pricing.
