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Hydranautics ESPA4-LD Reverse Osmosis Membrane 8" x 40"

SKU: 11060000030 | 1103070015
£785.00
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Hydranautics Bulk Discounts – Save up to 35%

Quantity discounts automatically applied at checkout. The more you order of the same membrane, the more you save.

See quantity discount breakdown below.

Quantity Discounts

Save up to 35% with our automatic bulk discounts.

Quantity Discounts

2–5 membranes: 7.14% off

6–10 membranes: 20.08% off

11–15 membranes: 25.08% off

16–50 membranes: 26.87% off

51–100 membranes: 30.50% off

101+ membranes: 35.17% off

No discount code required – discounts are applied automatically at checkout.

Discounts apply to quantities of the same membrane model only. Different models cannot be combined.

Technical Resources
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Product Description

Combining energy efficiency with high rejection

The energy required to pressurize RO feed water is the largest contributor to the total energy consumption of the RO plant. ESPA membranes are the choice for applications demanding high-energy efficiency, with uncompromised productivity and salt rejection. Operating at significantly lower pressures, ESPA elements produce high quality water in a range of water treatment applications, ensuring energy cost savings.

ESPA membranes are used in the treatment of drinking water, industrial process waters, municipal and industrial waste water recovery and reuse because of this exception performance capability. These membranes also serve as part of polishing units in seawater desalination plants when boron rejection is critical.

ESPA4 are the lowest feed pressure membranes offering low energy consumption. ESPA4 membranes require ultra-low pressures without compromising high salt rejection and are commonly used in the second pass of a reverse osmosis system.

The ESPA4 membranes are available in the LD variant. Low differential LD Technology® models are offered to minimize colloidal fouling when used with conventional pre-treatment equipment. These membranes offer consistently low feed pressures and longer intervals between cleanings.

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Frequently Asked Questions

What are the main benefits of using the Hydranautics ESPA4-LD Reverse Osmosis Membrane 8" for water treatment?
The Hydranautics ESPA4-LD Reverse Osmosis Membrane 8" offers high salt rejection, energy-efficient operation, and longer cleaning intervals, making it ideal for various water treatment applications including drinking water and wastewater recovery.
How does the Hydranautics ESPA4-LD membrane help save energy in a reverse osmosis system?
This membrane operates at ultra-low pressures, which significantly reduces energy consumption while maintaining high productivity and water quality, saving operational costs.
Can the Hydranautics ESPA4-LD Reverse Osmosis Membrane be used for seawater desalination and boron rejection?
Yes, the Hydranautics ESPA4-LD membrane is suitable for seawater desalination and boron rejection, especially as part of polishing units in desalination plants requiring high-quality permeate.
What are the main benefits of the Hydranautics ESPA4-LD Reverse Osmosis Membrane 8" x 40"?
The Hydranautics ESPA4-LD Reverse Osmosis Membrane 8" x 40" offers energy efficiency, high salt rejection, and low operational pressures, making it ideal for water treatment applications that demand cost savings and high performance.
In which applications can I use the Hydranautics ESPA4-LD membrane?
This membrane is suitable for drinking water treatment, industrial process waters, municipal and industrial waste water recovery, and reuse, as well as polishing in seawater desalination where boron rejection is critical.
How does the low differential LD Technology® benefit the Hydranautics ESPA4-LD membrane?
The LD Technology® minimizes colloidal fouling when used with conventional pre-treatment, resulting in lower feed pressures and longer periods between cleanings, which helps reduce maintenance costs.
Does the Hydranautics ESPA4-LD membrane require high pressure for operation?
No, the ESPA4-LD membrane operates at ultra-low pressures, which helps reduce energy consumption without sacrificing high salt rejection and performance.
What size is the Hydranautics ESPA4-LD Reverse Osmosis Membrane?
The membrane dimensions are 8 inches by 40 inches, making it suitable for various reverse osmosis systems.
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