Skip to main content

BW-34-4021 — 99.5% Commercial RO Membrane 4021

BW-34-4021 is a brackish-family spiral-wound thin-film composite RO element, wet-tested and shipped with its own serial number and datasheet.

Model
BW-34-4021
Segment
Commercial
Family
Brackish
Element size
4" × 21"
Salt rejection
99.5%
Permeate flow
525 GPD
Test pressure
100 psi
Max temperature
45°C
TDS class
brackish

Performs like

ISO 9001 · ISO 14001 · CE · RoHS · Halal certified manufacturing

Frequently asked questions

What is the salt rejection of BW-34-4021?

BW-34-4021 is tested to 99.5% salt rejection at 100 psi test pressure.

What element size is BW-34-4021?

BW-34-4021 is a 4" × 21" spiral-wound RO element (industry size code 4021), rated for a maximum operating temperature of 45°C.

Which membranes is BW-34-4021 equivalent to?

BW-34-4021 is a drop-in equivalent for DuPont (FilmTec) TW30-4021, DuPont (FilmTec) BW30-4021, Koch (Separation Solutions) MW-T421, Vontron ULP21-4021, Vontron LP21-4021, CSM (Toray Chemical Korea) RE4021 and others.