Hydranautics
ESPA4-7 Hydranautics Nitto 100 PSI 12,000 GPD 8 inch x 40 inch ESPA Series-High Productivity Low Pressure Membranes
ESPA4-7 Hydranautics Nitto 100 PSI 12,000 GPD 8 inch x 40 inch ESPA Series-High Productivity Low Pressure Membranes
Couldn't load pickup availability
ESPA4-7 Hydranautics Nitto 100 PSI 12,000 GPD 8 inch x 40 inch ESPA Series-High Productivity Low Pressure Membranes
-
FREE SHIPPING to the Continental United States!
-
For Quantity Discounts Contact Us for a Quote!
-
For International Shipping Contact Us for a Quote!
-
Call: 1 (760) 598-0189
-
Email: hctivista@gmail.com
PLEASE REFERENCE TABLE BELOW
Hydranautics ESPA4-7 Energy-Saving RO Membrane
The Hydranautics ESPA4-7 is a high-performance 8-inch reverse osmosis element engineered for ultra-low pressure operation. As one of the most energy-efficient membranes in the ESPA® (Energy Saving Polyamide) family, it is designed to deliver a high permeate flow of 12,000 gallons per day at a test pressure of only 100 psi. This makes it an ideal solution for large-scale municipal and industrial facilities looking to minimize energy consumption while maintaining superior salt rejection standards.
The ESPA4-7 is particularly effective in water treatment applications such as the second pass of a reverse osmosis system or for polishing low-TDS feedwaters. With a large active membrane area of 400 square feet, it allows for high productivity and effective removal of contaminants like silica and boron. By significantly reducing the required feed pressure compared to standard brackish water membranes, the ESPA4-7 helps operators lower total operational costs and achieve a more sustainable water treatment process.
| SPECIFICATION | DETAILS |
| Model Number | ESPA4-7 |
| Manufacturer | Hydranautics (Nitto) |
| Membrane Type | Composite Polyamide |
| Element Dimensions | 8.0" Diameter x 40" Length |
| Nominal Permeate Flow | 12,000 GPD (45.4 m³/d) |
| Stabilized Salt Rejection | 99.2% |
| Minimum Salt Rejection | 99.0% |
| Active Surface Area | 400 ft² (37.2 m²) |
| Test Pressure | 100 psi (0.7 MPa) |
| Max Operating Pressure | 600 psi (4.14 MPa) |
| Max Operating Temp | 113°F (45°C) |
| pH Range (Continuous) | 2 – 10 |
| pH Range (Cleaning) | 1 – 12 |
| Model # | Diameter x Length | GPD | Rejection | Typical Pressure |
| ESPA4-7 | 8.0 x 40 | 12,000 | 99.20% | 100 |
Product Disclaimer & Limitation of Liability
AI-Assisted Content & Information Accuracy: We strive to ensure that all product descriptions, specification tables, testing data, and cross-reference information are accurate and up-to-date. However, content presented on this page—including product descriptions, technical specification tables, bulleted data, and associated text—is compiled 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, omissions, or inaccuracies within product descriptions, tables, or equivalent-model recommendations. 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
