How long is the service life of the membrane?

The service life of the membrane is not specific to determine the answer, the general service life is 1-2 years. It depends on the quality of raw water, the size of water consumption, the proportion of pure water and wastewater equipment, prefilter material and equipment operating pressure, which will affect the service life of RO membrane.

What is the difference between model 21 and model 31?

The capacity of model 21 is slightly larger, but the TDS is slightly higher. The capacity of the model 31 is not as large as that of the model 21, but the water quality is better.

What is the difference between ULP and LP?

ULP is low-pressure reverse osmosis membrane, the working pressure is 6-8 kg; LP is high-pressure reverse osmosis membrane, the working pressure is 15kg; when choosing, please know the required product model in detail.

Wholesale Vontron Sw RO Membrane Ulp21-4040 Polyamide RO Filter 8040 Membrane

Name: Wholesale Vontron Sw RO Membrane Ulp21-4040 Polyamide RO Filter 8040 Membrane
Brand: Xi'an Homey Technology Co., Ltd.
SKU: 2080809565

Shaanxi, ChinaXi'an Homey Technology Co., Ltd.

US$86.00

1-49 Pieces

US$85.00

50-99 Pieces

US$84.00

100+ Pieces

Sample price:US$90.00/piece.Request sample

Product profile

Customization

Available

Membrane Type

Spiral

Type

Weight

4.2kg/PC

Usage

Purifying

Product Name

Water Treatment System RO Membrane

Certification

CE ISO9001

Warranty

1 Year

Transport Package

Carton

Specification

4040/8040

Trademark

VONTRON

Origin

China

Production Capacity

500000/Year

Key features

High Salt Rejection Rate: Achieves up to 99.8% salt rejection for superior water purification quality.

Wide Operating Temperature: Operates effectively within a temperature range of up to 45 degrees Celsius.

Broad pH Stability: Supports continuous running water pH range of 3-10 and cleaning pH of 2-11.

Diverse Model Options: Available in multiple sizes including 2514, 4040, and 8040 to fit various systems.

Low Pressure Operation: ULP models designed for low-pressure operation between 6-8 kg for energy efficiency.

Certified Quality: Manufactured with CE and ISO9001 certifications ensuring international standards.

Long Service Life: Typical lifespan ranges from 1 to 2 years depending on water quality and usage.

Universal Compatibility: Compatible with existing installations of the same model from other brands.

Company profile

Importers and ExportersHigh Repeat Buyers ChoiceR&D CapabilitiesProduct Certification

Xi'an Homey Technology Co., Ltd.

Shaanxi, China

Business Type: Manufacturer/FactoryExport Year: 2015-09-23Nearest Port: Qingdao, ShanghaiAverage Response Time: ≤1.54hTerms of Payment: LC, T/T, D/P, etc.International Commercial Terms(Incoterms): FOB, EXW, CFR, CIF, DAT, FAS, DDP, DAP, CIP, CPT, FCA

AI-Powered supplier vetting

SummaryXi'an Homey Technology Co., Ltd. is a China-based manufacturer/factory producing water-treatment equipment and related products, including RO membranes, seawater desalination plants, resin, and FRP tanks. It holds a valid import/export license and reports export sales of 51%–70%, with stated lead times of within 15 working days in both peak and off-season. The supplier offers broad customization and ODM services, but reported no new products in the past year and has three R&D engineers. Service-management controls are weak: no written procedures or records were reported for service assessment, approved suppliers, corrective actions, or complaint handling. Raw-material traceability is unknown, and no evidence of notable-brand OEM work, certifications, or customer cases was provided. Financial information is present only as year references, without sufficient evidence to assess credibility.

Supplier typeThe supplier is identified as a manufacturer/factory and limited company operating in Shaanxi, China. Its stated scope includes production and sales of water-treatment equipment and related products, consistent with the listed RO membrane, seawater desalination plant, resin, and FRP tank offerings.

After-Sales capabilityThe supplier reported no written procedures or records for service-capability assessment, corrective and preventive actions, or effective customer-complaint handling, and no approved-supplier list. Although multiple service quotation and payment terms are accepted and stated lead times are within 15 working days, the documented after-sales management system shows a clear deficiency.

Production capacityThe supplier identifies itself as a manufacturer/factory and states that it produces water-treatment equipment, steel portable toilets, and steel refuse collection houses, with products including RO membranes, desalination plants, resin, and FRP tanks. It also reports lead times within 15 working days in peak and off-season, but production capacity, equipment, and output volumes are not provided.

Customization capabilityThe supplier explicitly lists customization from samples, minor customization, customization from designs, full customization, and flexible customization. It also reports ODM service availability, providing direct evidence of broad customization support.

Product Q&A

Q:How can you guarantee quality?

Always a pre-production sample before mass production; Always final Inspection before shipment;

Q:What can you buy from us?

water purifier,air cleaner,ro membrane,nf membrane,uf membrane

Q:Why should you buy from us not from other suppliers?

We are one main production water treatment line of membrane company and sales for more than 15 years, it's popular sales with sea water membrane in many countries, High quality, customization and fast delivery time !

Q:What services can we provide?

Accepted Delivery Terms: FOB,CFR,CIF,EXW,FAS,CIP,FCA,CPT,DEQ,DDP,DDU,Express Delivery,DAF,DES; Accepted Payment Currency:USD,EUR,HKD,CNY; Accepted Payment Type: T/T,L/C,D/P D/A,Credit Card,PayPal,Western Union,Cash,Escrow; Language Spoken:English,Chinese

Q:Is this membrane universal for other brands?

Yes, the same model can be used.