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Hydranautics CPA7-LD-4040 Reverse Osmosis Membrane 4" x 40"

SKU: 11060000023 | 1103060012
£318.00
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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

The CPA7 series are the newest CPA brackish water RO membranes offering the highest salt rejection in the industry. These ultra-high rejection RO membranes are meant to fulfil your purest water quality requirements.

Where ultra-high purity water is required under difficult water conditions, the CPA7 membranes supply the best combination of high rejection and high flow capability in a brackish water RO element, compared to all commercial brackish water RO elements

The LD variant of these membranes using LD Technology® are available in 4” (CPA7-LD-4040) and 8” (CPA7-LD) diameters. The CPA7 MAX membrane has an active membrane surface area of 440 ft2 (40.9 m2) which reduces capital costs by requiring fewer pressure vessels and lesser floor space.

CPA7 Features and benefits:

• Enhanced membrane chemistry for best permeate quality at lower feed pressure
• Improved chemical resistance for increased membrane life
• Innovative feed spacer design to reduce cleaning frequency and costs
• Proprietary vented seal carrier to eliminate pressure shock damage during system startup

CPA7 Applications:

• Boiler makeup water for power generation
• Industrial waste water recovery
• Zero Liquid Discharge (ZLD) / HERO process
• Ultrapure water for semiconductor manufacturing
• Ultrapure water for pharmaceutical industries

Key Features of CPA7 membranes

• Highest salt rejection – 99.8%
• High rejection of TOC, boron, silica and nitrate
• Greater tolerance to high pH cleanings
• Lower energy consumption
• Best combination of high rejection/ low energy in the membrane industry

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Frequently Asked Questions

What are the main benefits of using the Hydranautics CPA7-LD-4040 Reverse Osmosis Membrane 4"?
The Hydranautics CPA7-LD-4040 Reverse Osmosis Membrane 4" offers high salt rejection up to 99.8%, improved chemical resistance, reduced cleaning costs, and lower energy consumption, making it ideal for demanding water purification needs.
How does the Hydranautics CPA7-LD-4040 membrane handle high salt rejection compared to other RO membranes?
The Hydranautics CPA7-LD-4040 membrane provides industry-leading salt rejection, ensuring the highest purity water for challenging conditions, surpassing many standard brackish water membranes with its 99.8% rejection rate.
Can the Hydranautics CPA7-LD-4040 be used for ultrapure water applications in industries like pharmaceuticals or semiconductor manufacturing?
Yes, the Hydranautics CPA7-LD-4040 is specifically designed for ultrapure water applications such as pharmaceutical manufacturing and semiconductor industries, thanks to its high rejection of contaminants like TOC, boron, silica, and nitrate.
What makes the Hydranautics CPA7-LD-4040 Reverse Osmosis Membrane suitable for high-purity water applications?
The Hydranautics CPA7-LD-4040 Reverse Osmosis Membrane offers the highest salt rejection in the industry at 99.8%, making it ideal for applications requiring ultra-pure water such as semiconductor manufacturing and pharmaceutical industries.
How does the CPA7-LD-4040 membrane improve system efficiency and reduce costs?
This membrane features a high active surface area of 440 ft², which reduces the number of pressure vessels needed, lowering capital costs and saving floor space. Its enhanced chemical resistance and innovative design also help minimize cleaning frequency and maintenance costs.
Can the CPA7-LD-4040 membrane handle challenging water conditions?
Yes, the CPA7-LD-4040 membrane is designed for difficult water conditions, providing high rejection and flow capabilities that ensure water purity even under challenging brackish water conditions.
What are the main applications for the Hydranautics CPA7-LD-4040 Reverse Osmosis Membrane?
This membrane is used for boiler makeup water in power generation, industrial wastewater recovery, zero liquid discharge processes, and ultrapure water production for semiconductor and pharmaceutical industries.
How does the membrane's design contribute to its durability and longevity?
The CPA7-LD-4040 includes an improved chemical-resistant membrane chemistry, a vented seal carrier that prevents pressure shock damage during startup, and an innovative feed spacer design, all of which help extend the membrane's lifespan and reduce maintenance needs.
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