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Vontron cross-reference

ULP21-4021 equivalent

Compare published specifications and confirm suitability for your application.

Comparable specifications

Same nominal size; flow and rejection within the comparison band.

Cross-references support initial selection. Confirm feed water, operating conditions and system compatibility with Hi-Tech before replacement. Published specifications may use different test conditions.

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"

Other cross-referenced models

Cross-referenced against6other elementsacross4manufacturers. Every entry links to its own spec comparison.

ViewTW-34-4021specsViewBW-34-4021specsAllVontroncross-references

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.