

Standard scope of supply for this configuration.
| Technical specifications | |
|---|---|
| Brand | VOLARDDA |
| Model | 4040 4021 8040 |
| Types of | Reverse osmosis membrane |
| Thickness | 1 mm ± 0.1 mm |
| Aperture | 0.0001 μm |
| Filtration accuracy | 0.0001 μm |
| Molecular weight cutoff | 100,000 |
| Flux | 1000-10500 L/H |
| Filter method | Internal pressure |
| Longitudinal strength | 300-600 MPa |
| Operating temperature | 1-45 ℃ |
| Operating pressure | 0.2-0.3 MPa |
| Performance | Acid and alkali resistance |
| Suitable | Water |
| Scope of application | Water pump |
| Use | Water filtration |
| Specification | P31-4040 P32-8040 W11-4021 |
Specifications are typical for the standard configuration and are confirmed on the approved drawing before production. Capacity, voltage and footprint can be adapted to your site.
Tell us the raw water source, the hourly flow you need and the target water quality. We will confirm capacity, recovery and power before you commit.
We match vessel size, working pressure and connection to the flow rate of your existing system.
An inlet distributor spreads flow across the bed, avoiding channelling and premature breakthrough.
Quartz sand, activated carbon or resin is loaded to the calculated bed depth and backwashed clean.
Top and bottom ports are threaded or flanged to suit your valve head and site pipework.
Every vessel is hydro-tested before it leaves the workshop and shipped with a test record.
Installation guidance and a start-up checklist are supplied so the vessel is online the same day.
Match the vessel diameter to the service flow so the bed depth and the face velocity stay in range. The table on this page gives the flow each diameter handles.
0.6 MPa working pressure as standard, with 1.0 MPa available on request for high-rise or booster-fed systems.
FRP for cost-effective filtration and softening up to about 1.0 MPa, stainless steel where hygiene, temperature or chemical compatibility matters.
Yes. Manual and automatic control valve heads, with top or side connection, are available with the tank as a set.
Stock sizes ship in 7-15 days. Custom diameters and connection layouts are made to drawing, usually within three weeks.

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