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RE4021-BE / TE / TL — equivalent Hi-Tech RO membrane

Looking for a drop-in alternative to the CSM (Toray Chemical Korea) RE4021-BE / TE / TL? BW-34-4021 is the closest Hi-Tech Membranes equivalent — see how the specs line up below. The same element also replaces matching parts from 3 other manufacturers.

SpecRE4021-BE / TE / TLBW-34-4021
Salt rejection
99.2%
99.5%Higher
Permeate flow
525 GPD
525 GPD
Test pressure
150 psi
100 psiLower psi
Element size
4″ × 21″
4" × 21"

BW-34-4021 also replaces these equivalents

Cross-referenced against 6 other elements across 4 manufacturers. Every entry links to its own spec comparison.

View BW-34-4021 specsView TW-34-4021 specsAll CSM (Toray Chemical Korea) cross-references

CSM (Toray Chemical Korea), DuPont (FilmTec), Koch (Separation Solutions), Vontron 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.