Hydranautics
Replaces SW30-4040 1,750 GPD at 800 PSI 4 x 40 inch Hydranautics Nitto Membranes
Replaces SW30-4040 1,750 GPD at 800 PSI 4 x 40 inch Hydranautics Nitto Membranes
Couldn't load pickup availability
- Found a Better Price? Contact Us, We'll See if We Can Get You a Better Deal!
- Original Authentic Genuine Part!
- For Quantity Discounts Contact Us for a Quote!
- Customers Outside The Contiguous United States, Please Contact Us for a Quote!
- Call: 1 (760) 598-0189
- Email: hctivista@gmail.com
Hydranautics 4" x 40" Low-Fouling Seawater RO Membrane (SW30-4040 Compatible, 1,750 GPD)
Engineered as a premium, direct-fit replacement for the SW30-4040, this high-performance 4-inch by 40-inch seawater composite (SWC) reverse osmosis membrane provides exceptional industrial and commercial desalination. Manufactured by Hydranautics (a Nitto Group Company), this low-fouling, spiral-wound element is constructed using advanced composite polyamide polymer technology. It integrates proprietary Low Differential (LD) Technology, utilizing a specialized 34-mil feed spacer that minimizes colloidal fouling when paired with conventional pre-treatment equipment. This advanced spacer design ensures consistently low feed pressures, optimizes internal flow dynamics, and significantly extends the operational duration between required cleanings for continuous-duty systems.
Designed to excel in demanding seawater and high-salinity marine applications, this compatible alternative delivers a highly efficient nominal permeate flow rate of 1,750 gallons per day (GPD) combined with an exceptional nominal salt rejection of 99.7%. The element features 80 square feet of active membrane area and achieves this productivity at a standard test pressure of 800 PSI. Built to withstand rigorous offshore or coastal operational environments, this robust membrane safely accommodates a maximum applied pressure of 1,200 PSI, a maximum feed flow of 16 GPM, and liquid temperatures up to 113°F (45°C). By combining robust energy efficiency with optimized permeate output, it is the premier choice for mega desalination plants, high-demand commercial watermakers, and specialized systems seeking a highly reliable SW30-4040 replacement.
| Specification | Details | Notes |
| Primary Compatibility | SW30-4040 | Premium direct-fit replacement |
| Manufacturer | Hydranautics (Nitto) | |
| Element Type | Seawater RO Membrane | Low-fouling spiral-wound design |
| Membrane Technology | Composite Polyamide | Proprietary LD Technology |
| Active Membrane Area | 80 ft² (7.43 m²) | |
| Permeate Flow Rate | 1,750 GPD (6.62 m³/d) | Measured under standard test conditions |
| Nominal Salt Rejection | 99.7% | High purity removal rate |
| Minimum Salt Rejection | 99.5% | |
| Test PSI (Applied Pressure) | 800 PSI (5.5 MPa) | Standard test conditions |
| Max Applied Pressure | 1,200 PSI (8.27 MPa) | Safe limit for continuous use |
| Max Feed Flow Rate | 16 GPM (3.6 m³/h) | |
| Feed Spacer Thickness | 34 mil | Minimizes colloidal fouling |
| Max Operating Temp | 113°F (45°C) |
Product Disclaimer & Limitation of Liability
Product Disclaimer & Limitation of Liability
AI-Assisted Content & Information Accuracy:
We strive to ensure that all product descriptions, specification tables, testing data and visual media are accurate and up-to-date. However, content presented on this page—including, but not limited to, product gallery images, product descriptions, technical specification tables, bulleted data, and any other associated text or media elements—is compiled, generated, or formatted with the assistance of artificial intelligence (AI). While we review this content for general accuracy, AI-assisted data can contain errors, omissions, or inaccuracies. All information is provided for general reference purposes only. We are not legally liable for typographical errors, visual misrepresentations, omissions, or inaccuracies within product descriptions, tables, or images. We expressly disclaim all liability for damages, system failures, misapplications, or voided warranties resulting from reliance on any information presented on this site.
Manufacturer Updates & Official Specifications:
Manufacturers frequently revise product designs, component materials, and technical specifications without prior notice. Official manufacturer documentation and data sheets are the sole authoritative sources for all product specifications and strictly supersede any physical dimensions, specifications, or visual representations presented on this page. It is the customer's sole responsibility to independently verify all technical data—including but not limited to pressure ratings, dimensions, material compatibility, and performance metrics—against the official manufacturer data sheet prior to purchase and installation.
Order Verification & Chargeback Policy:
It is the buyer's sole responsibility to independently verify that the exact manufacturer part number being ordered is correct and entirely compatible with their specific application prior to checkout. By placing an order, you explicitly agree that if the physical item shipped perfectly matches the manufacturer part number listed on your official invoice, the order is legally considered fulfilled as described. Disputes or chargebacks claiming an item is "Not as Described" based on supplementary website text, specification tables, AI-generated content, or compatibility assumptions will not be recognized or honored.
Pricing, Availability & Right to Cancel:
All prices, promotional offers, and inventory statuses are subject to change without notice. In the event a product is listed at an incorrect price or with inaccurate stock availability due to a typographical, technical, or system error, we reserve the right to refuse or cancel any orders placed for that item. If an order is canceled after your payment has been processed, a full refund will be initiated immediately to your original payment method.
Share
