VONTRON 4040 Osmotic Membrane Industrial for Car Wash

Industrial RO membrane for car washes, laundries and technological applications

The ULP21 series membrane was developed by Vontron Technology Co. and is made of an aromatic polyamide blend. The ultra-low pressure design was created to achieve high filtration efficiency at reduced operating pressure, which is especially important in industrial systems operating continuously or intensively.

The ULP21-4040 model is primarily used in pharmaceuticals, cosmetology, food production, car washes, and laundries. The osmotic membrane is intended for desalination of surface and groundwater with a concentration below 2000 ppm, making it well suited for professional systems where stable water quality and predictable system operation are essential.

Key advantages of the VONTRON ULP21-4040 membrane

• service life of up to 6 years, with an expected service life of 5-6 years under operating conditions,
• large filtration area, supporting high operating efficiency,
• high performance even at low feed water pressure; maximum capacity is achieved at only 2/3 of the pressure required for standard composite membranes,
• salt rejection up to 99.5%,
• average water purification rate of 99%,
• minimum salt reduction of 98.5%,
• certificates and approvals: NSF/ANSI 58, FDA and PZH.

In practice, this means a solution suitable for applications where a water filter and osmotic membrane must combine high capacity with high permeate quality and stable operation in demanding commercial and industrial applications.

Performance at lower feed pressure

The ultra-low pressure series was developed to operate effectively at lower pressure than standard composite membranes. This is a significant benefit for RO systems in car washes and industrial installations, as it allows high filtration process efficiency to be maintained under operating parameters that are beneficial for the entire system.

The membrane reaches maximum capacity at approximately 2/3 of the pressure required for standard composite membranes. At the same time, it offers a large filtration area of 7.9 m2 and a capacity of 2400 gpd, i.e. 9074 liters per day.

Application and type of treated water

The VONTRON ULP21-4040 membrane is intended for desalination of surface and groundwater. Its application range includes water with a concentration below 2000 ppm, which corresponds to the typical requirements of many installations preparing water for further technological use.

This solution is particularly suitable for:

• car washes,
• laundries,
• pharmaceuticals,
• cosmetology,
• food production,
• other industrial water treatment and desalination systems.

Operation and important working conditions

To maintain high operating efficiency and long service life, the osmotic membrane should be used within the recommended operating parameters. The ULP21-4040 model is designed for operation at a working pressure of 11 bar, a maximum allowable pressure of 41.36 bar, and a maximum allowable temperature of 45°C.

The pH range is 3-11, and chlorine tolerance is 0 ppm, so the feed water must not contain free chlorine. Optimal operating conditions include a feed water temperature of 25°C, total salinity up to 300 ppm, and operating pressure of 11 bar.

Why this membrane is a good choice for an RO system

VONTRON ULP21-4040 combines the features important for modern reverse osmosis systems: high capacity, effective desalination, stable operation at lower pressure, and parameters matching the requirements of commercial and industrial applications. It is a solution for users looking for a component to expand or service an RO system in a car wash, laundry, or production facility.

Thanks to its large filtration area and high salt rejection, the membrane performs well as a central element of a system where efficient water treatment, reduction of dissolved salts, and high water quality after the filtration process are important.

Technical specifications

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