ULP21-4021 — equivalent Hi-Tech RO membrane
Looking for a drop-in alternative to the Vontron ULP21-4021? TW-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.
SpecULP21-4021TW-34-4021
- Salt rejection
- 99%
- 99.5%Higher
- Permeate flow
- 525 GPD
- 525 GPD
- Test pressure
- 100 psi
- 100 psi
- Element size
- 4″ × 21″
- 4" × 21"
TW-34-4021 also replaces these equivalents
Cross-referenced against 6 other elements across 4 manufacturers. Every entry links to its own spec comparison.
Vontron, DuPont (FilmTec), Koch (Separation Solutions), 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.