Skip to product information
1 of 6

BW-4040, 4" x 40" RO Membrane for Desalination of Brackish Water, 99.5% Desalination Rate, 2400 GPD, 2000-5000PPM, BW-4040 Reverse Osmosis Membrane for Groundwater, Municipal, NSF Certified

BW-4040, 4" x 40" RO Membrane for Desalination of Brackish Water, 99.5% Desalination Rate, 2400 GPD, 2000-5000PPM, BW-4040 Reverse Osmosis Membrane for Groundwater, Municipal, NSF Certified

Quantity
Regular price $148.78
Regular price Sale price $148.78
Sale Sold out
  • 24/7 Customer Support
  • Risk-Free 30-Day Returns
  • Fast & Reliable U.S. Shipping

30-Day Hassle-Free Returns

Not satisfied? Return your order within 30 days for a full refund or exchange — simple and easy.

✔ Easy return process

✔ Fast refunds

✔ No hidden conditions

Fast U.S. Shipping

We ship within the United States only — no international delays.

✔ Processing time: 1–2 business days

✔ Delivery time: 3–7 business days

✔ Real-time tracking available

👉 Track your order anytime from the header via Track Order

About This

  • 【High efficiency filtration】RO filter bw-4040 has high water yield and good desalination performance. Average permeability 2,400 GPD, 99.5% desalination rate, optimal operating pressure 225psi (150psi-400psi), TDS ≤ 5,000 ppm, up to 8,000 ppm. BW-4040 reverse osmosis membrane system not only removes impurities, rust, but also providing clean, pure and safe water for your business
  • 【Preprocessing Settings】When you use the 4 x 40 ro membrane, please do the pretreatment, you can install the front PP cotton and activated carbon cartridge, to protect your RO membrane from particles, residual chlorine, organic damage.Regular maintenance: Replace the pre-filter cartridge (PP cotton, activated carbon) every 3-6 months to avoid the accumulation of pollutants leading to membrane clogging
  • 【Food grade materials】Not only do we firmly control the materials used in our membranes, but we also use BPA-free or other toxic plastic materials to produce our filter housings. Quality Certification:Certified to ISO 9001 standards. We consistently provide products and services that meet the quality requirements of our customers
  • 【Flushing operation】 Flush the membrane for more than 30 minutes after the first installation or long-term disuse; manually flush the membrane for 10 minutes after each replacement of the filter element.Water pressure requirement: the inlet water pressure should be ≥0.2MPa (about 2kg), when the pressure is insufficient, install a booster pump.Impact of water temperature: the best water temperature 25 ℃, every 1 ℃ lower, the water production decreased by about 3%
  • We have good after-sales service, if you have any dissatisfaction with our bw 4040 membrane, please contact us immediately. We will solve your problem within 12 hours and give you the best result. For any reason you're not completely satisfied,please let us know and it can be directly replaced a new one. So buy it with confidence

Overview

  • Material : TFC
  • Product Dimensions : 4"D x 4"W x 40"H
  • Item Weight : 7 pounds
  • External Testing Certification : ISO 9001
  • Product Benefits : Removes Impurities, Rust and Harmful Minerals
View full details
Is Hard Water or Contaminated WaterDamaging Your Home?
Signs You May Be Experiencing Problems With Your Tap Water
Protect Your Home Appliances
rss_feed
Softer Skin & Healthier Hair
rss_feed
Pure, Better-Tasting Drinking Water
rss_feed
Prevent Costly Hard Water Damage
rss_feed
Reduce Limescale Buildup
rss_feed
Clean Water, Whole Home
rss_feed
Protect Your Home Appliances
rss_feed
Softer Skin & Healthier Hair
rss_feed
Pure, Better-Tasting Drinking Water
rss_feed
Prevent Costly Hard Water Damage
rss_feed
Reduce Limescale Buildup
rss_feed
Clean Water, Whole Home
rss_feed
RO Water Filters Reverse Osmosis Water Filters for Pure Drinking Water
Salt Water Softeners Salt Water Softeners for Powerful Hard Water Treatment
Pure Water. Better Living.

Experience the difference clean, softened water makes in your daily life — from healthier skin to better tasting drinking water.

👉 Softer skin and smoother hair with every shower.

Descaling Solutions Descaling Solutions for Removing Limescale and Mineral Buildup
👉 Enjoy healthier skin and hair with every use.
Water Filter Cleaning Kits

👉 Prevent scale buildup and keep your appliances running efficiently.

Under Sink Water Filters

👉 Softer, brighter clothes that last longer with every wash.

Reverse Osmosis Systems Best Reverse Osmosis Systems for Clean Drinking Water

See the Difference in Your Water — Instantly

Hard water, chlorine, and hidden contaminants can affect your health, skin, and appliances.

Our advanced filtration system removes impurities and delivers clean, safe water throughout your entire home.

Feel the difference in every drop — from your kitchen to your shower.

Impurity Reduction 95%
Chlorine Removal 99%

FAQ

Is installation difficult?
expand_less
expand_more
No. Our systems are designed for easy DIY installation and most homeowners can install them without professional tools. If you need help, our support team is always available.
Do I need a plumber to install the system?
expand_less
expand_more
No plumber is required. The system connects directly to your existing plumbing with simple fittings.
How does this system improve water quality?
expand_less
expand_more
Our filtration system helps reduce common impurities and minerals that cause hard water problems, improving the taste and clarity of your water.
Will this help protect my appliances?
expand_less
expand_more
Yes. Hard water minerals can build up inside appliances. Our system helps reduce scale buildup, helping extend the life of washing machines, dishwashers, and water heaters.
How often do filters need to be replaced?
expand_less
expand_more
Most filters only need replacement every 6–12 months, depending on usage and local water conditions.
Will this improve my skin and hair?
expand_less
expand_more
Many customers notice softer skin and smoother hair after switching to filtered or softened water.
What if I'm not satisfied with the system?
expand_less
expand_more
If you're not completely satisfied, you can return your product within 30 days for a full refund.
Easy to install — no plumber required. Our experts are here if you need help.
Strategic Partner
Smartphone with email subscription interface on a table with a cup of coffee and plant.

Unlock Exclusive Offers

Be the first to know about new collections and exclusive offers.

Subscribe Now