Filmtec (BW30-4040) Brackish Water Membrane 2,400 GPD 4"X40" TDS Reduction1917 5" Big Blue filter housings

5" Big Blue filter housings

Tube life depends on chemical type

🔧 Pro tip: Always apply Teflon tape or pipe thread sealant rated for potable water to the male NPT threads before installation

Replacement Procedure

This membrane fits standard 2" diameter housings and is compatible with systems requiring less than 1 GPM of purified water output

Filmtec (BW30-4040) Brackish Water Membrane 2,400 GPD 4"X40" TDS Reduction1917 5" Big Blue filter housingsDow Filmtec BW30 4040 Industry Standard Brackish Water RO Membrane High flow commercial reverse osmosis membrane element with 2,400 GPD capacity and 99. 5% salt rejection for light industrial and commercial applications 2,400 GPD @ 225 PSI 99. 5% Rejection 4" 40" pH 1 13 Cleanable The Filmtec BW30 4040 has been the commercial brackish water standard for decades because it delivers consistent performance where it matters most. With 78 square feet of