---
product_id: 81894987
title: "BW30-4040 Brackish Water Industrial Reverse Osmosis Membrane"
brand: "dow filmtec"
price: "83604 kr"
currency: ISK
in_stock: true
reviews_count: 2
category: "Dow Filmtec"
url: https://www.desertcart.is/products/81894987-bw30-4040-brackish-water-industrial-reverse-osmosis-membrane
store_origin: IS
region: Iceland
---

# Max pressure drop 15 psig for robust performance pH 1-13 cleaning range for ultimate maintenance 34 mil thick feed spacer for fouling resistance BW30-4040 Brackish Water Industrial Reverse Osmosis Membrane

**Brand:** dow filmtec
**Price:** 83604 kr
**Availability:** ✅ In Stock

## Summary

> 💧 Elevate your water filtration game with unmatched durability and cleanability!

## Quick Answers

- **What is this?** BW30-4040 Brackish Water Industrial Reverse Osmosis Membrane by dow filmtec
- **How much does it cost?** 83604 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/81894987-bw30-4040-brackish-water-industrial-reverse-osmosis-membrane)

## Best For

- dow filmtec enthusiasts

## Why This Product

- Trusted dow filmtec brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Free Chlorine Tolerance:** Operates effectively with <0.1 ppm free chlorine, protecting membrane integrity in challenging water conditions.
- • **High Pressure Endurance:** Designed to withstand up to 15 psig pressure drop, perfect for multi-element industrial setups.
- • **Durable Hard Shell Exterior:** Built tough for multi-membrane housings, delivering consistent, reliable filtration in light industrial applications.
- • **Wide pH Cleaning Compatibility:** Clean confidently across a broad pH range (1-13) for unmatched maintenance flexibility and peak performance.
- • **Industry's Thickest Feed Spacer:** 34 mil thickness dramatically reduces fouling, ensuring longer membrane life and less downtime.

## Overview

The Dow Filmtec BW30-4040 is a premium brackish water reverse osmosis membrane featuring the industry's thickest feed spacer (34 mil) to minimize fouling, a wide pH cleaning range (1-13) for versatile maintenance, and a robust design that tolerates up to 15 psig pressure drop. Ideal for light industrial use, its durable hard shell exterior and low free chlorine tolerance (<0.1 ppm) ensure consistent, high-performance filtration in multi-element systems.

## Description

Product Description The Dow Filmtec BW30-4040 brackish water reverse osmosis membrane elements provide consistent and outstanding system performance in light industrial applications. Elements with a hard shell exterior are recommended for systems with multiple-element housings containing three or more membranes, as they are designed to withstand higher pressure drops. From the Manufacturer The Dow Filmtec BW30-4040 brackish water reverse osmosis membrane elements provide consistent and outstanding system performance in light industrial applications. Elements with a hard shell exterior are recommended for systems with multiple-element housings containing three or more membranes, as they are designed to withstand higher pressure drops.

Review: Great filter - Return customers. Great product for a great price! Will order again.
Review: Good product - Good product

## Features

- Features the industry's thickest feed spacer (34 mil), which lessens the impact of fouling
- May be cleaned over a wide range of pH levels (pH 1-13) for maximum cleaning effectiveness
- Maximum Pressure Drop: 15 psig
- Free Chlorine Tolerance: <0.1 ppm

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00D43H4WC |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #711,686 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #4,226 in Replacement Under-Sink Water Filters |
| Brand | Dow Filmtec |
| Color | Yellow |
| Customer Reviews | 4.1 4.1 out of 5 stars (7) |
| Date First Available | November 10, 2009 |
| External Testing Certification | NSF |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 7 pounds |
| Item model number | FILMTEC-BW30-4040 |
| Manufacturer | Dow Filmtec |
| Material | Polyamide Thin-Film Composite |
| Number of Items | 1 |
| Part Number | CWD-FILMTEC-BW30-4040 |
| Product Benefits | Offers improved performance, enhanced cleaning capabilities, and durability in various conditions. |
| Product Dimensions | 40 x 4 x 4 inches |
| Size | Single |
| Temperature Range | 113 Degrees Fahrenheit |
| UPC | 701003117848 |
| Unit Count | 1.0 Count |

## Product Details

- **Brand:** Dow Filmtec
- **External Testing Certification:** NSF
- **Item Weight:** 7 Pounds
- **Material:** Polyamide Thin-Film Composite
- **Product Benefits:** Offers improved performance, enhanced cleaning capabilities, and durability in various conditions.

## Images

![BW30-4040 Brackish Water Industrial Reverse Osmosis Membrane - Image 1](https://m.media-amazon.com/images/I/61GgFxG4QQL.jpg)

## Questions & Answers

**Q: What pressure is this designed to operate?**
A: 225 psi

**Q: Weight of each membrane in a box**
A: 10 lbs

**Q: What pressure is this designed for? My system is 225 psi?**
A: 225

**Q: is it membrane only or entire assembly including house, spacer and seal?**
A: Just the membrane.  The housing is separate.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great filter
*by J***. on May 2, 2025*

Return customers. Great product for a great price! Will order again.

### ⭐⭐⭐⭐⭐ Good product
*by A***R on April 23, 2019*

Good product

## Frequently Bought Together

- Dow Filmtec BW30-4040 Brackish Water Industrial Reverse Osmosis Membrane
- lesolar 4040 Ro Membrane RO Membrane Housing 4 Inch Commercial Reverse Osmosis Membrane Housing 304 Stainless Steel Pressure Vessel 4"x40" 300 PSI 3/4" Feed and Drain Ports 1/4" Permeate Ports

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**Shop now:** [https://www.desertcart.is/products/81894987-bw30-4040-brackish-water-industrial-reverse-osmosis-membrane](https://www.desertcart.is/products/81894987-bw30-4040-brackish-water-industrial-reverse-osmosis-membrane)

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*Product available on Desertcart Iceland*
*Store origin: IS*
*Last updated: 2026-03-02*