Brackish Water

BW 400 ES L

Energy Optimized

$573per element

Free UPS Ground shipping on 5+ elements to the contiguous US (2 to 4 days) · 1 to 4 from $25, exact rate at checkout

Ships same day on business-day orders before 1 PM Central, or we upgrade your shipping at our cost

1
Replacing vessels?

A typical 8-inch pressure vessel holds 6 to 7 elements, and operators usually replace a full vessel at a time. One vessel lands in the 5% tier; two vessels land in the 10% tier.

NanoH2O (LG) BW 400 ES L
New
In Stock

Technical Data Sheet

Official NanoH2O (LG) product specifications (PDF)

NanoH2O

100% genuine. Authorized NanoH2O (formerly LG Chem) distributor · manufacturer warranty

NSF/ANSI/CAN 61 certified element (factory certification, NanoH2O Co., Ltd.) · lead-free certified (NSF/ANSI/CAN 372) · NSF listing

Volume pricing, applied automatically

1-4 units

$573

5-9 units

$544

10-19 units

$516

Energy-saving brackish water RO membrane designed for low-pressure operation (150 psi) to significantly reduce power consumption while maintaining exceptional performance.

Flow Rate

10,500 GPD

Salt Rejection

99.6%

Feed Spacer

34 mil

Pressure

150 psi

Active Area

400 ft²

Max Pressure

600 psi (41.3 bar)

Max Temp

45°C (113°F)

Max Flow

75 gpm

Continuous pH

2.0 to 11.0

Cleaning pH

2.0 to 12.0

Max SDI

5.0

Chlorine Tolerance

< 0.1 ppm

Weight

35 lbs

Direct drop-in replacement for

DuPont Filmtec BW30-400-IGHydranautics ESPA2-LDSuez AG400Toray TMH20D-400

Same 8040 form factor, fits your existing pressure vessel. Verify against the datasheet below.

Authorized NanoH2O (formerly LG Chem) distributor
Same-day shipping on business-day orders before 1 PM Central
30-day returns on unopened items · restocking fee up to 15%

You may also need

BW 400 R G2

BW 400 R G2

The Industry Workhorse

$603View
BW 440 R G2

BW 440 R G2

Maximum Active Area

$618View

Technical Insights & Research

View the Blog
Performance Comparison

LG NanoH2O vs DuPont Filmtec BW30-400

An engineering analysis comparing TFN vs TFC technologies, operating pressures, and exact drop-in specifications.

Supply Chain Strategy

Your Supplier Quoted Weeks? Sourcing 8040 Elements From Stock

How plant operators line up a second source with elements on the shelf.

Frequently Asked Questions

Orders for the BW 400 ES L placed before 1 PM Central on a business day ship the same day; later orders ship the next business day. UPS Ground takes 2 to 4 business days within the US, and it is free to the contiguous US on 5 or more elements (all models combined). Faster services are available at checkout. We pack each element in heavy-duty packaging.
The BW 400 ES L is a standard 8-inch industrial RO membrane. If your system currently uses 8040 (8-inch diameter, 40-inch length) membranes from DuPont Filmtec, Hydranautics, or Toray, this NanoH2O membrane (formerly branded LG Chem NanoH2O) is a direct drop-in replacement for 8040 elements of the same type (brackish or seawater). Compare flow and rejection on the datasheets.
The 'R G2' stands for Rejection and Generation 2. This specific model is optimized for high salt rejection (99.8%) and fouling resistance. Other models like the 'ES L' are optimized for Energy Saving (lower pressure), while '440' models offer higher surface area (440 ft²) for more flow.