Description
Hydranautics ESPA2-LD-4040: RO membrane: brackish, energy saving, 4040. We supply it across the Sultanate, and our technicians can fit and test it so it is working properly before we leave.
Why it suits Oman
In an RO plant the membrane element and its pressure vessel carry most of the performance, and the cost of getting them wrong shows up as high product TDS, falling flow or a short element life. Matching element format, rejection rating and housing connections is the key step. Send us the model on your current element or vessel and we will confirm the match before you order.
Quick facts
- Brand: Hydranautics
- Model: ESPA2-LD-4040
- Type: RO membrane – brackish, energy saving, 4040
- Supplied in: Muscat, Seeb, Sohar, Nizwa, Sur, Salalah and all of Oman
Specifications
| Permeate flow | 2,000 gpd (7.57 m3/d) |
|---|---|
| Salt rejection | 99.6% (min 99.4%) |
| Active area | 80 ft2 (7.43 m2) |
| Test conditions | 1,500 ppm NaCl, 150 psig (1.03 MPa), 25 C, 15% recovery, pH 6.5-7.0 |
| Max applied pressure | 600 psig (4.14 MPa) |
| Max temperature | 45 C |
| Length | 40.0 in |
| Diameter | 3.95 in |
| Permeate tube | 0.75 in |
| Feed spacer | 34 mil |
| Datasheet date | 2022-08-22 |
Availability: this product is supplied to order. If it is not on our shelf, we source it directly through the manufacturer’s channel and confirm the lead time by WhatsApp before you commit.
Frequently asked questions
What are the key specifications of the Hydranautics ESPA2-LD-4040?
According to the manufacturer’s published data: permeate flow 2,000 gpd (7.57 m3/d); salt rejection 99.6% (min 99.4%); active area 80 ft2 (7.43 m2). The full list is in the specifications table above, and we are happy to confirm whether it suits your site before you order.
How often should the membrane be replaced?
Typically every two to three years, but the real trigger is performance rather than time. When product TDS climbs, output drops or the pressure needed rises, the element is spent. We check all three on service visits so it is replaced when it needs to be, not on a guess.
Will this membrane fit my existing system?
Membranes are sized by a standard format, so a 4040 element fits any 4040 housing. Send us a photo of your current element or the model on the housing label and we will confirm the match before you order.
Buying from Clean Eco Trade
- Where we are: Seeb 112, Muscat, Oman — walk in, or we deliver across the Sultanate.
- Open 24 hours, including emergency callouts for breakdowns.
- Installation and servicing by our own technicians, not subcontractors.
- Free on-site water testing before we recommend anything — TDS, hardness, pH and chlorine.
Request a quote
We price each enquiry against your actual requirement rather than a shelf price, so quantities, specification and installation are all included in the figure you receive. Send us the details and we will come back to you the same day.
Call +968 9828 1478 · WhatsApp us about this product · Request a quote online




