4” x 21” / 4021 Commercial RO Membrane Replacement
Get high-quality replacement commercial reverse osmosis (RO) membranes by SpiroPure. Size 4” x 21” RO membranes assist in reducing TDS, high salinity rates, and more in smaller commercial RO systems and related applications. 4021 membrane elements, such as the SP-XL4021 extremely low-pressure (XLE-4021 / XLP-4021) membranes, provide high-performance total dissolved solids (TDS) reduction at ultra-low pressure levels, minimizing energy consumption and maximizing energy savings.
Membrane Type |
Model |
Rejection Rate |
Average Permeate ±15% |
Feedwater NaCl |
Fresh Water Recovery Rate |
Concentration of Salt Solution (Feedwater NaCl) |
Feed Spacer |
Maximum Recommended NaCl |
Maximum Operating Pressure |
|
|---|---|---|---|---|---|---|---|---|---|---|
2540 RO Membranes |
Extremely Low Pressure |
98.5% |
|
500 ppm |
8% |
500 ppm |
28 mm |
< 2,000 ppm |
600 psi |
Membrane Type |
SpiroPure |
Dupont / Filmtec |
GE / SUEZ |
Axeon |
LG Chen |
|---|---|---|---|---|---|
Extremely Low Pressure |
SP-XL4021 |
XLE-4021 |
XE1-4021 |
LG BW 4021 UES |
Versatile RO Solution for Various Systems
The SpiroPure extremely low-pressure SP-XL4021 is perfect for use in coffee shops, restaurants, food services, and hospitality industries that require purified water. This 4021 RO membrane is also ideal for whole-house RO systems, laboratories, small manufacturing facilities that use RO, and car washes that can provide spot-free rinsing.
Advantages of 4” x 21” SpiroPure RO Membranes
SpiroPure filters provide systems with energy efficiency and reliable water quality. Here are some of the main performance advantages of the SP-XL4021:
- Durable design: SpiroPure membranes are made using high-quality, thin-film composite (TFC) materials, which provide high permeability and selectivity. As a result, they’re able to withstand general wear and tear, allowing them to continuously function well.
- Energy efficiency: 4021 RO membranes from All Filters are made to generate high performance at low pressure, which reduces the strain on pumps and saves energy.
- Water quality consistency: The quality of the membrane’s ability to eliminate contaminants is maintained across various feedwater circumstances.
- Versatile compatibility: SpiroPure membranes can be used in place of similar models from popular brands and fit standard commercial membrane housings.
Benefits of Shopping at All Filters
Buying membranes from All Filters offers several benefits. Here are some of the main advantages:
- Cost savings: SpiroPure membranes are an excellent option for homeowners and companies who want reliable RO performance without overspending, as they’re typically priced 30–50% lower than equivalent models from top brands.
- User-friendly charts: Our cross-reference charts make it easy to find the right 4021 membranes that are compatible with your RO housing.
- Reliable support: All Filters offers reliable customer support seven days a week, helping you find the correct replacement membrane for your system.
Upgrade Your RO System
Get your 4” x 21” RO membranes for reliable, high-performance water purification at cost-effective prices from All Filters. Most orders are shipped the same day, ensuring you receive your items without delay.
Plus, we offer easy returns for extra peace of mind. Find the ideal 4021 membrane using our cross-reference charts and place an order today.
