The SpiroPure SP-XL4021 is a 4" x 21" extremely low-pressure commercial reverse osmosis membrane designed for compatible RO systems operating at lower feed pressures. It provides an average permeate flow of 950 GPD (±15%) at 100 PSI and a 98.5% salt rejection rate. The SP-XL4021 is a compatible replacement for the DuPont FilmTec XLE-4021, Axeon XE1-4021, and LG Chem LG BW 4021 UES commercial RO membrane elements.
Extremely Low-Pressure XLP RO Membrane Specifications:
- Nominal Size: 4" x 21"
- Certification: NSF/ANSI/CAN 61
- Salt Rejection Rate: 98.5%
- Average Permeate ±15%: 950 GPD @ 100 PSI
- Feedwater NaCl: 500 ppm
- Fresh Water Recovery Rate: 8%
- Feed Spacer: 28 mil
- Maximum Recommended NaCl: <2,000 ppm
- Maximum Operating Pressure 600 PSI
XLP-4021 Extreme Low Energy Membrane common applications:
- Commercial water treatment systems
- Low salinity brackish water
- Smaller water treatment systems
- Whole house RO systems
- Food service
- Medical and research institutions
- Hospitality industry
- Drinking water
- Wastewater reuse
- Car washes
- Agricultural
- Irrigation
XLE-4021 Extremely Low Pressure Membrane compatible element model numbers:
- XE1-4021
- Dupont Filmtec XLE-4021
- LG Chem LG BW 4021 UES
FAQs on 4021 Commercial RO Membranes
What is a 4021 low pressure RO membrane?
A 4021 low pressure RO membrane is a 4" x 21" reverse osmosis element engineered to filter effectively at reduced feed pressures. The SpiroPure SP-XL4021 is an Extremely Low-Pressure membrane, delivering strong performance while using less energy than standard commercial membranes.
How many gallons per day does the SpiroPure SP-XL4021 produce?
The SpiroPure SP-XL4021 produces an average permeate output of 950 GPD (±15%) at 100 PSI, tested against 500 ppm feedwater NaCl. Actual output may vary somewhat based on your system's real feed water quality, temperature, and operating pressure. Pre-filtration protects the membrane from clogging or premature fouling that can lessen production and longevity.
Is the SP-XL4021 suitable for commercial RO systems?
Yes. The SP-XL4021 is designed for commercial water treatment systems, including food service, hospitality, medical and research institutions, car washes, and wastewater reuse applications. Its low-pressure operation also makes it a practical fit for smaller commercial and, when practical, whole-house RO systems.
How can I find the best 4021 RO membrane price?
The SpiroPure SP-XL4021 provides a cost-effective compatible replacement option with published specifications including a 4" x 21" nominal size, 98.5% salt rejection rate, and extremely low-pressure operation.
What is the salt rejection rate of the SpiroPure SP-XL4021 membrane?
The SpiroPure SP-XL4021 is an extra low pressure membrane with a salt rejection rate of 98.5%, tested under standard lab conditions. It's rated for feedwater up to 2,000 ppm NaCl maximum, making it well suited for low-salinity brackish water and municipal or tap water sources.
Which RO membrane models can the SpiroPure SP-XL4021 replace?
The SpiroPure SP-XL4021 is a compatible replacement for the DuPont FilmTec XLE-4021, Axeon XE1-4021, and LG Chem LG BW 4021 UES commercial RO membrane elements. Confirm your system's membrane size, operating requirements, and compatibility before ordering.
What is the flow rate of the SpiroPure SP-XL4021?
The SpiroPure SP-XL4021 provides an average permeate flow of 950 GPD (±15%) at 100 PSI under specified test conditions. Actual output may vary based on feedwater quality, temperature, pressure, and system operating conditions.
What is the salt rejection rate of the SP-XL4021?
The SpiroPure SP-XL4021 has a 98.5% salt rejection rate under specified test conditions.
What size is the SP-XL4021?
The SpiroPure SP-XL4021 is a nominal 4" x 21" commercial reverse osmosis membrane. Confirm your system's membrane dimensions and requirements before ordering.
Is the SP-XL4021 NSF certified?
Yes. The SpiroPure SP-XL4021 is certified to NSF/ANSI/CAN 61 standards.
What type of RO membrane is the SP-XL4021?
The SP-XL4021 is an extremely low-pressure commercial reverse osmosis membrane designed for compatible systems operating at lower feed pressures.
