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DuPont

HSRO-4040-FF DuPont FilmTec™ 2,400 GPD at 225 PSI 4 x 40 inch 99.5% Rejection Heat Sanitizable Full Fit Membranes

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DuPont FilmTec™ HSRO-4040-FF Heat Sanitizable RO Membrane (2,900 GPD)

 

The DuPont FilmTec™ HSRO-4040-FF is a Heat Sanitizable reverse osmosis element engineered for facilities that require the strictest standards of purity and hygiene. Manufactured using high-performance polyamide thin-film composite membrane technology, this 4-inch by 40-inch element is built to withstand hot water sanitization up to 185°F (85°C), giving system operators the ability to sanitize their RO system with hot water alone and reduce or eliminate dependency on chemical sanitizers. This makes it a trusted solution for purified water production in pharmaceutical, medical, and biotechnology applications, as well as permeate polishing in food and dairy processing.

The HSRO-4040-FF features a Full-Fit configuration, a sanitary design that helps minimize the stagnant, hard-to-clean areas found in conventional elements, supporting more thorough sanitation cycles. With 90 square feet of active membrane area, this element gives system designers the flexibility to operate at a lower flux or achieve target capacity with fewer elements. Under standard manufacturer test conditions, the HSRO-4040-FF delivers a permeate flow rate of 2,900 GPD with a minimum salt rejection of 97%, and the product is listed to NSF/ANSI 61 for material safety in drinking water applications.

Each element ships complete with two end caps, and DuPont offers an optional coupler with EPR O-rings for linking multiple elements within a shared pressure vessel housing. Per DuPont's guidance, elements should be pre-conditioned with hot water prior to initial use; operators can expect an initial flux decrease and rejection increase following this pre-conditioning step, which is normal for this element type.

 

Specification Table

SPECIFICATION

DETAILS

Model Number

HSRO-4040-FF

Manufacturer

DuPont Water Solutions (FilmTec™)

Element Type

Heat Sanitizable Reverse Osmosis Element

Membrane Type

Polyamide Thin-Film Composite

Configuration

Full-Fit (Sanitary Design)

Nominal Size

4" x 40"

Active Membrane Area

90 ft² (8.4 m²)

Permeate Flow Rate

2,900 GPD (11 m³/d)

Minimum Salt Rejection

97%

Test Conditions¹

2,000 ppm NaCl, 125 psi (8.6 bar), 77°F (25°C), pH 8, 15% Recovery (pre-heat-treatment)

Max Operating Pressure

600 psi (41 bar)

Max Operating Temperature

113°F (45°C)

Max Sanitization Temperature

185°F (85°C) at 25 psi

Max Pressure Drop (Per Element)

15 psi (1.0 bar)

Max Pressure Drop (Per Vessel)

60 psi (4.1 bar)

pH Range (Continuous Operation)

2 – 11

pH Range (Short-Term Cleaning, 30 min)

1 – 12

Max Feed Silt Density Index (SDI)

SDI 5

Free Chlorine Tolerance

< 0.1 ppm

Permeate Flow Variance

Up to 20% below stated nominal value

Regulatory Listing

NSF/ANSI 61

End Caps Included

2 per element (DuPont Part No. 102109)

Optional Multi-Element Coupler

DuPont Part No. 89048 (includes two 2-210 EPR O-rings, Part No. 89255)

 

¹ Flow rates for individual elements may vary but will be no more than 20% below the value shown. Sales specifications may vary as design revisions take place.

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