Hydron BW-4040 RO Membrane, 3.9″ × 40″
Part number: BW-4040
Manufacturer: Hydron (BW Series)
Hydron BW-4040 commercial reverse osmosis membrane, 3.9" x 40", rated by the manufacturer at 2,400 GPD average permeate flow at 225 psi with 99.5% stable rejection. FilterBridge Supply takes commercial and public-agency requests for this part by part number.
Specifications
| Spec | Value |
|---|---|
| Part number | BW-4040 |
| Manufacturer | Hydron |
| Series | BW |
| Product type | RO Membrane |
| Diameter | 3.9″ |
| Length | 40″ |
| Filter media | Polyamide Compound |
| Average permeate flow | 2,400 GPD (9.1 m³/d) average permeate flow at 225 psi |
| Stable rejection | 99.5% |
| Active area | 90 ft² (8.4 m²) |
| Max. working pressure | 600 psi |
| Max. feed flow | 16 gpm |
| Max. feed temperature | 113 °F (45 °C) |
| Max. feed SDI | 5 |
| Feed pH range | 3–10 continuous; 2–12 for cleaning |
| Free chlorine | < 0.1 ppm |
| Dimensions (data sheet) | A 40″ / B 3.9″ |
| Certification | Not shown here until confirmed for this exact part number (see FAQ) |
Specifications are transcribed from the manufacturer's published data. Nothing is inferred, rounded or converted.
What to check before you order
This page does not say this part works in any particular housing or swaps for any other brand's part. Before ordering, compare these against what you use today:
- Size. This part is 3.9″ × 40″ (diameter × length). Check your housing's cartridge size or the label on the part you use today.
- Media. Polyamide Compound. If the part you use now has a different media, flag it so the change is a conscious one.
- Operating limits. The specification table lists the manufacturer's pressure, temperature, feed and cleaning limits. Compare them with your system before you order.
- Certification. If your specification requires NSF/ANSI 61 or 42, put that in your request.
Our spec comparison guide walks through each item.
Where it's used
The manufacturer lists these applications: car wash, bottling, manufacturing, water stores, food processing. Whether this part suits a particular system depends on the housing, the duty and the water. Send us the application and we'll tell you whether this format is the right one, rather than assuming it is.
Buying for a water district or city?
Send the spec or a recent PO line and we'll work from your number. Public-agency buyers can see how we handle quote requests and vendor lists on our municipal purchasing page.
FAQ
- What size is BW-4040?
- 3.9″ × 40″ (diameter × length), as published by the manufacturer.
- What is BW-4040 made of?
- Polyamide Compound.
- Is BW-4040 NSF certified?
- Tell us which standard your specification requires. We check certification against the manufacturer's listing for the exact part number, and we don't assume it from the product series.
- Will BW-4040 fit my housing or replace another brand's part?
- This page doesn't say that. Send us your housing model or the part number you use now, and we'll tell you what we can supply against it. A person reviews every request.
How a quote works
Send us the part number and we'll tell you what we can supply against it. We check your part number against the manufacturer's published specs and confirm fit with our supplier before you order.
Every order is quoted individually. We confirm each quote with the manufacturer before we send it to you. We don't publish a price list. Pricing comes on a written quote for your part numbers and quantities.
Request a written quote with your part numbers, the quantity and the delivery address. We'll send a written quote. If you'd like to proceed, reply to confirm. We can send the manufacturer data sheet for any part we quote.
Request a quote
Send us the part number and we'll tell you what we can supply against it.
- Request a quote: part number, number of cases, delivery location.
- Replacing a different part number? Send it and we'll tell you what we can supply.
- Build an RFQ
- Public agencies: municipal purchasing