NEW Industrial RO Membrane BW8-380AF

Short Description:

8040 series Industrial RO Membranes  include TW8-460ULP, BW8-440XLE, BW8-400LP, BW8-380AF. They are widely used for filtration of tap water, underground water & brackish water; we well serve the industries including commercial drinking/ food water treatment, electronics & chemical works, power plant, etc. The BW-8040AF membrane, has the best position in the marketplace for industrial RO membranes. This is one of the best and most long-lasting RO industrial membranes ever created. It features a high-quality flat sheet, anti-fouling technology (AF), and a robust layer of fiberglass reinforcement.

This membrane is made of a high-quality Polyamide flat sheet that can tolerate a variety of fouling processes. Be it colloidal caused by clays or flocs, biological caused by bacteria or fungus, organic (oils, polyelectrolytes, or humics), or even scaling (mineral precipitates), this is a strong and very durable industrial RO membrane and it’s avalible on 8040, and 4040 models.



  • Brand Name: HID
  • Desalination: 99%
  • OEM/ODM: Accept
  • Manufacturer: Yes
  • Delivery Time: 2-7 days
  • Shipping Support: Express / Sea/ Land/ Air freight
  • Place of Origin: Jiangsu, China
  • Price and Inquiries : Email:
  • Model: BW8-380AF
  • WhatsApp: : +86-133-0528-4401
  • Product Detail


    Company Profile

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    How to order and get prices ?

    For prices and quotations, you can directly contact our sales team by leaving an Email:, Phone: 0086-(0)511-81886899, WhatsApp: +8613305284401 or reach our customer service on Facebook messenger.

    What is the Salt Rejection percent for the BW-8040AF ?

    The Salt rejection for this membrane is set at 99.2%. This is the standard rejection rate for BW-8040AF producing up to 9600 gallons of fresh water, though the membrane may perform better than indicated.

    How much pressure is required for this membrane?

    The BW-8048AF 9600 GPD membrane requires 225 psi for optimal performance and durability. It can also withstand pressures of up to 600 psi, but this may impair the membrane's performance, life span, and structural damage.

    What is type of feed water is recommanded?

    Tapwater and underground water perform best with the membrane. Although some of our clients use it for other water sources, keep in mind that the rejection rate may drop to 99 or 98; otherwise, a higher pressure vessel is required 350 psi).

    Are you a Manufacturing company and do you customize products?

    Since 2008, we have been producing reverse osmosis membranes for home, commercial, and industrial use. With our OWN auto rolling line and OWN RO flat sheet assembling process, we have been able to supply branded and customized reverse osmosis membranes to retailers, distributors (B-2-B) and end-users (B-2-C) across the world, as well as providing both ODM & OEM services.

    The BW series is a polyamide composite membrane element. It features low operating pressure, high water output, and a high desalination rate. It has a high removal rate for dissolved salts, TOC, SI02, and other contaminants, making it ideal for preparing high-purity water in the electronics and power sectors. 

    It is appropriate for surface water, municipal water, and other water sources desalination treatment, and is primarily utilized in industrial pure water, boiler feed water, or brackish water applications such as high-concentration brine.

    Packing box

    Untitled design

    HIDTM Industrial RO Membranes – 8040 Series:

    Being one of the earliest RO membranes manufacturers in China, HID TM ranks the best brands among the Chinese RO membrane industry. Each RO membrane is made of HID TM high rejection flat sheet and goes through most stringent manufacturing processes as well as in-house quality inspection & testing till delivery.
    8040 series RO membranes are widely used for filtration of tap water, underground water & brackish water; we well serve the industries including commercial drinking/food water treatment, electronics & chemical works, power plants, etc.

    Industrial RO Membranes Main Features:

    - HID TM anti-fouling & high rejection flat sheet (film);
    - lower energy costs (low pressure models) and higher productivity;
    - highly stabilized rejection with realized nominal flux;
    - minimize system CAPEX with HIDTM RO membrane excellent performance-price ratio;
    - stringent in-house inspection & testing control.

    Industrial RO Membranes Dimensions:

    Model No. A (inch/mm) B (inch/mm) C (inch/mm)
    TW8-460ULP 40/1016 8.0/203.2 1.125/28.6

    Industrial RO Membrane Model & Performance:

    Model No. Feed Spacer 
    thickness (mil)
    Min. Salt 
    Rejection (%)
    Stabilized Salt 
    Rejection (%)
    Flow Rate (GPD)
    Pressure (psi)
    Test water
     TDS (ppm)
    TW8-460ULP 28 98.3 98.8 12000 150 1000
    BW8-440XLE 31 98.5 98.9 11000 150 1500
    BW8-400LP 31 98.6 99.2 10500 225 2000
    BW8-380AF 34 98.7 99.2 9600 225 2000

    1. Permeate flow rate and salt rejection is based on testing conditions: 25℃, PH 7.5, 20% recovery.
    2. Stabilized salt rejection is generally achieved within 24-48 hours of continuous use, depending upon feedwater characteristics and operating conditions.

    Industrial RO Membranes Operating Limits

    Model No. Maximum 
    Feed Water 
    PH Range,
    Maximum Feed
    Water Turbidity
    Feed Water 
    TW8-460ULP 45℃ 600psi 2-11 1NTU 5 <0.1ppm
    BW8-440XLE 45℃ 600psi 2-11 1NTU 5 <0.1ppm
    BW8-400LP 45℃ 600psi 2-11 1NTU 5 <0.1ppm
    BW8-380AF 45℃ 600psi 2-11 1NTU 5 <0.1ppm

    Industrial RO Membranes General Information:

    To ensure proper startup of RO water treatment systems is essential to prepare the membranes for operating service and to prevent membrane damage due to overfeeding or hydraulic shock.
    To follow the proper startup procedure (available with water treatment system guide book) also helps ensure that system operating parameters conform to design specifications so that system water quality and productivity goals can be achieved.
    Before initiating system startup procedures, membrane pretreatment, loading of the membrane elements, instrument calibration and other system checks should be completed.

    Industrial RO Membranes Operation Guidelines:

    It is CRITICAL to avoid any abrupt pressure or cross-flow variations on the RO membrane elements during start-up, shutdown, cleaning or other sequences to prevent possible membrane damage. During startup, a gradual change from a standstill to operating state is recommended as follows:
    • Feed pressure should be increased gradually over a 30-90 second time frame.
    • Cross-flow velocity at set operating point should be achieved gradually over 15-30 seconds.
    • Permeate obtained from the first hour of operation should be discarded.

    Industrial RO Membranes Important Information:

    Keep RO membrane elements moist at all times after initial wetting.
    If operating limits and guidelines given in this specification are not strictly followed, the limited warranty with the supplier will be null and void.
    To prevent biological growth during prolonged system shutdowns, it is recommended that RO membrane elements be immersed in a storage solution.
    The customer is fully responsible for the effects of incompatible chemicals and lubricants on elements.
    The maximum pressure drop across an entire pressure vessel (housing) is 50 psi (3.4 bar).
    Avoid static permeate-side backpressure at all times.

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  • HID RO Membranes are widely used in ultra-pure water, process pure water, cooling tower water, boiler water supply, pure water, throughout the electronics industry, optoelectronic industry, machinery manufacturing, fine chemical industry, medical pharmaceutical, food, and beverage industry, surface coating, and many other industries.

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