FilmTec™ BW30 PRO-4040

Fiberglassed Large Commercial Elements for Challenging Water Conditions


General Information

  • Keep elements moist at all times after initial wetting
  • For successful operation of Reverse Osmosis (RO) and Nanofiltration (NF) membrane systems, the operation must follow the guidelines provided in the FilmTec™ Reverse Osmosis / Nanofiltration Elements Operation Excellence and Limiting Conditions Tech Fact.
  • To prevent biological growth during prolonged system shutdowns, it is recommended that membrane elements be immersed in a preservative solution
  • The customer is fully responsible for the effects of incompatible chemicals and lubricants on elements
  • Maximum pressure drop across an entire pressure vessel (housing) is 50 psi (3.4 bar)
  • Avoid static permeate-side backpressure at all times
  • Permeate obtained from the first hour of operation should be discarded.



Operating and Cleaning Limits
Membrane Type Polyamide Thin-Film Composite
Maximum Operating Temperature  113°F (45°C)
Maximum Operating Pressure  600 psig (41 bar)
Maximum Feed Flow Rate
4040 Elements
2540 Elements
 16 gpm (3.6 m3/h)
6 gpm (1.4 m3/h)
Maximum Pressure Drop 15 psig (1.0 bar)
pH Range
Continuous Operation
Short-Term Cleaning (30 min)
2 – 11
1 – 13
Maximum Feed Silt Density Index (SDI  SDI 5
Free Chlorine Tolerance  < 0.1 ppm