NEW Industrial RO Membrane TW-4040ULP

Short Description:

4040 series Industrial RO membranes include BW-4040LP, BW-4040AF, TW-4040ULP, TW-4040XLE. 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 plants, etc.

  • 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
  • E-mail:
  • Model: TW-4040ULP
  • Product Detail


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    HIDTM Industrial RO Membranes – 4040 Series:

    Being one of the earliest RO membranes manufacturers in China, HIDTM 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. 4040 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:

    - HIDTM 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)
    TW-4040XLE 4.0/100.1 40/1016 0.75/19.1

    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)
    TW-4040XLE 28 97.5 98 2600 100 750
    TW-4040ULP 31 98.2 98.8 2400 150 1000
    BW-4040LP 31 98.6 99.2 2400 225 1500
    BW-4040AF 34 98.7 99.2 2100 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 
    TW-4040XLE 45℃ 300psi 2-11 1NTU 5 <0.1ppm
    TW-4040ULP 45℃ 600psi 2-11 1NTU 5 <0.1ppm
    BW-4040LP 45℃ 600psi 2-11 1NTU 5 <0.1ppm
    BW-4040AF 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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