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Hydranautics ESNA1-LF-LD 4040

Price exc. VAT: 249.00

Price inc. VAT (21%): 301.29

Normal Price: 299.00

You save: 50.00

Estimated delivery: 14 days

ESNA1-LF-LD are high-performance nanofiltration membranes ideal for softening applications and removal of pesticides, bacteria and viruses. They provide 50%-90% salt rejection with ultra-low-pressure operations, increased energy savings, and significantly lower installation and operating costs.

They use patented Low Differential LDTM technology designed to minimize colloidal fouling.

ESNA1-LF-LD membranes use a patented 34 mil thickness feed spacer that prevents colloidal fouling and increases the effectiveness of membrane cleaning. As a result, the ESNA1-LF-LD membrane does not need to be cleaned frequently – thus reducing treatment cost – while offering extreme durability and consistent performance.

ESNA1-LF-LD membrane is globally acclaimed for high hardness rejection characteristics in softening applications. It significantly reduces operating costs and provides optimum hardness rejection in softening applications.

ESNA1-LF-LD membrane is available in 4-inch and 8-inch diameter sizes.


General Product Description*  
Size: 4″ diameter & 40″ length
Permeate Flow: 1,900 gpd (7.2 m3 /d)
CaCl2 Rejection: 93% (88% - 97% minimum/maximum)
Configuration: Low Fouling Spiral Wound
Membrane Polymer: Composite Polyamide
Product Use and Restrictions  
Maximum Applied Pressure: 600 psig (4.14 Mpa
Maximum Chlorine Concentration: < 0.1 ppm
Maximum Operating Temperature: 113 °F (45 °C)
pH Range, Continuous (Cleaning): 2-10 (2-12 at 25C for 30 minutes)
Maximum Feedwater Turbidity: 1.0 NTU
Maximum Feedwater SDI (15 mins): 5.0
Maximum Feed Flow: 16 gpm (3.6 m3 /h)
Minimum Brine Flow 3 gpm (0.7 m3 /h)
Maximum Pressure Drop for Each Element: 15 psi (0.10 MPa)
*Please refer to standard testing conditions and details in the enclosed datasheet


Alternative to: 
Dow Filmtec
NF 90-4040
Suez GE
Duraslick NF 4040
Duraslick NF 4040 HS 
Less Then Crate (LTC) surcharge rates
Surcharge per element for Less Then Crate (LTC) will be applicable as stated below.
8 inch membranes (1-25 pieces) = 20€ / membrane
4 inch membranes (1-80 pieces) = 10€ / membrane

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