Total: R182.16
ULP series of ultra-low pressure aromatic polyamide compound membrane element newly developed by Vontron Membrane Technology Co., Ltd. can work under ultra low pressure to reach as high permeate flow and rejection same as regular low-pressure membrane element, and is applicable to desalination of surface water and underground water.
Delivery and return
Delivery and return
Next day delivery in store
Buy before 6pm to receive your order next day.FREE
Next day delivery
Orders before 6pm from Monday to Saturday (or before 1pm on Sunday) will be delivered Next working day (except Northern Ireland and Highlands). Orders placed after 6pm (after 1pm on Sunday) or for Northern Ireland and Highlands will be delivered in 2 working days.29 USD
Drop Point
In 2-3 working days. Pick up your parcel in one of the many diferent collection points available and during a wide range of hours.39 USD
Same day delivery in London:
Place your order before 13:00 to get it today!. If you order later on, you’ll receive it the next day and if you order on Sunday, you’ll receive it the next working day.59 USD
Shipping Information
Shipping Information
SHIPPING
Complimentary ground shipping within 1 to 7 business days In-store collection available within 1 to 7 business days Next-day and Express delivery options also available Purchases are delivered in an orange box tied with a Bolduc ribbon, with the exception of certain items See the delivery FAQs for details on shipping methods, costs and delivery timesComposition and care
Composition and care
Characteristics of wood :
- Hard, compact , fiberous and porous
- Good wood gives a rich, warm and beautiful surface.
Wood is used for the construction of:
- Floor, Furniture, Walls
- Incidental furnishing (lampshades, picture frames)
- Kitchen & restaurant ware
Description
Vontron ULP21‑4040 RO Membrane – Ultra‑Low Pressure 4″×40″
The Vontron ULP21‑4040 RO Membrane is part of Vontron’s ULP (Ultra–Low-Pressure) series, designed for surface water, underground water, or municipal feed with TDS < 2,000 ppm. This industrial-grade membrane offers high performance at significantly reduced pressure compared to standard low‑pressure membranes. The 4″ diameter × 40″ length format ensures compatibility with standard vessels, making it suited for commercial, light‑industrial, and large domestic RO systems.
Key Features
- Ultra‑low pressure operation, reducing pump and infrastructure costs.
- Stable salt rejection ~99% (minimum ~98.5%) under test conditions.
- Typical permeate flow ~2,400–2,600 GPD (~9–10 m³/day) in a standard 4040 element.
- Suitable feed water: TDS < 2,000 ppm NaCl equivalents.
- Compact “4040” size fits many existing RO systems for easier retrofits.
Technical Specifications
| Parameter | Value |
|---|---|
| Model | ULP21‑4040 |
| Active Membrane Area | ~90 ft² (~8.4 m²) |
| Rated Permeate Flow | ~2,400‑2,600 GPD (~9–10 m³/day) |
| Stable Rejection Rate | ~99% |
| Minimum Rejection Rate | ~98.5% |
| Max Feed Pressure | ~600 psi (~4.14 MPa) |
| Max Feed Flow | ~16 gpm (~3.6 m³/hr) |
| Max Feed Temperature | 45 °C |
| SDI (Silt Density Index) | ≤ 5 |
| Free Chlorine Tolerance | < 0.1 ppm |
| pH Range (Continuous Operation) | 3–10 |
| pH Range (Cleaning) | 2–12 |
Why Choose the Vontron ULP21‑4040 RO Membrane?
If you’re looking for a high‑capacity membrane with lower energy consumption, the ULP21‑4040 is an excellent choice. Because it runs at lower pressure while still delivering near‑99% salt rejection and good flow rates, you reduce operating cost and extend component life. Moreover, its standard 4″×40″ size means it works in many existing systems without major modifications — making it ideal for upgrades, commercial installations or demanding domestic setups.
Installation & Maintenance Tips
- Ensure proper pre‑treatment: feed water SDI ≤ 5, free chlorine < 0.1 ppm, and temperature under 45 °C.
- On first use, flush the new membrane: run ~15‑25 minutes at low pressure, then ~60‑90 minutes at full design pressure and discard initial permeate.
- Monitor key parameters: permeate flow, salt rejection, and differential pressure — a drop may indicate fouling or scaling.
- Clean according to manufacturer guidelines; observe pH and temperature limits.
- For storage, keep the membrane wet or in a 1% sodium bisulfite solution if not in immediate use.
Additional information
| Weight | 2.40 kg |
|---|---|
| Dimensions | 105 × 15 × 15 cm |
