Description

DuPont FilmTec XLE-400 RO Membrane is an Ideal for reverse osmosis plant managers and operators dealing with controlled-pre-treatment and seeking high-quality permeate water at low operating costs.

DuPont SW8040XLE-400 RO Membrane Product Data Sheet

• Provides lower energy costs and more productivity, especially in cold waters
• Minimizes equipment CAPEX in desgins with savings in elements and pumping due to the 440 ft² active area
• Delivers the most effective cleaning performance, robustness and durability due to its widest cleaning pH range (1-13)

Product type

FilmTec™ Element	Active area		Feed spacer thickness  (mil)	Permeate flow rate		Stabilized Salt Rejection (%)	Minimum salt rejection (%)
	ft2	m2		gpd	m3/d
XLE-440	440	41	28	14,000	53	99.0	97.0

1. Permeate flow and salt (NaCl) rejection based on the following standard test conditions: 2,000 ppm NaCl, 125 psi (8.6 bar), 77°F (25°C), pH 8, 15% recovery.

2. Flow rates for individual elements may vary but will be no more than +15%.

3. Stabilized salt rejection is generally achieved within 24-48 hours of continuous use; depending upon feedwater characteristics and operating conditions.

4. Sales specifications may vary as design revisions take place.

5. Active area guaranteed ± 5%.  Active area as stated by DuPont Water Solutions is not comparable to nominal membrane area often stated by some manufacturers. 

Element Dimensions

Dimensions - inches (mm)                    1 inch = 25.4 mm
	A		B		C
FilmTec Element	(in.)	(mm)	(in.)	(mm)	(in.)	(mm)
XLE-440	40.0	1,016	1.50 ID	38 ID	7.9	201

1. Refer to FilmTec™ Design Guidelines for multiple-element systems of 8-inch elements (Form No. 45-D01695-en).

2. Element to fit nominal 8-inch (203-mm) I.D. pressure vessel.

Operating and Cleaning Limits

a. Maximum temperature for contnuous operation above pH is 95℉ (35℃).
b. Refer to FilmTec™ Cleaning Guidelines (Form No. 45-D01696-en).
c. Under certain conditions, the presence of free chlorine and other oxidizing agents will cause premature membrane failure. Since oxidation damage is not covered under warranty, DuPont Water Solutions recommends removing residual free chlorine by pretreatment prior to membrane exposure. Please refer to Dechlorinating Feedwater (From No. 45-D01569-en) for more information.

Additional Important Information

Product Stewardship

Customer Notice

DuPont strongly encourages its customers to review both their manufacturing processes and their applications of DuPont products from the standpoint of human health and environmental quality to ensure that DuPont products are not used in ways for which they are not intended or tested. DuPont personnel are available to answer your questions and to provide reasonable technical support. DuPont product literature, including safety data sheets, should be consulted prior to use of DuPont products. Current safety data sheets are available from DuPont.

• The use of this product in and of itself does not necessarily guarantee the removal of cysts and pathogens from water. Effective cyst and pathogen reduction is dependent on the complete system design and on the operation and maintenance of the system.
  
• Permeate obtained from the first hour of operation should be discarded.

Regulatory Note