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LG BW 4040 R / UES — equivalent Hi-Tech RO membrane

Looking for a drop-in alternative to the Trisep (Microdyn-Nadir) LG BW 4040 R / UES? HMBW-34-4040 (high rejection / fouling resistant) is the closest Hi-Tech Membranes equivalent — see how the specs line up below. The same element also replaces matching parts from 9 other manufacturers.

SpecLG BW 4040 R / UESHMBW-34-4040 (high rejection / fouling resistant)
Salt rejection
99%
99.7%Higher
Permeate flow
2,400 GPD
2,500 GPD
Test pressure
150 psi
150 psi
Element size
4″ × 40″
4" × 40"

HMBW-34-4040 (high rejection / fouling resistant) also replaces these equivalents

Cross-referenced against 29 other elements across 10 manufacturers. Every entry links to its own spec comparison.

View BW-34-4040 specsView HMBW-34-4040 (high rejection / fouling resistant) specsView CP-34-4040 specsAll Trisep (Microdyn-Nadir) cross-references

Trisep (Microdyn-Nadir), DuPont (FilmTec), Toray, Hydranautics (Nitto), LG Chem (NanoH2O), Koch (Separation Solutions), Veolia (formerly SUEZ), Lanxess (LewaBrane), Vontron, CSM (Toray Chemical Korea) and all model numbers shown are trademarks of their respective owners, used here for compatibility reference only. Hi-Tech Membranes is not affiliated with, endorsed by, or sponsored by any of them.