Skip to product information
1 of 2

Hydranautics

ESPA-2540 Hydranautics / Nitto 600 GPD at 150 PSI 2.5 x 40 inch Membranes

ESPA-2540 Hydranautics / Nitto 600 GPD at 150 PSI 2.5 x 40 inch Membranes

Regular price $241.54 USD
Regular price Sale price $241.54 USD
Sale Sold out
Quantity

ESPA-2540 Hydranautics / Nitto 600 GPD at 150 PSI 2.5 x 40 inch Membranes

  • FREE SHIPPING to the Continental United States!

  • Financing Options Available at Checkout via Shop Pay & Paypal!

  • 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 DATA SHEET & TABLE BELOW

 

Hydranautics ESPA-2540 Reverse Osmosis Membrane

 

Product Description

 

The Hydranautics ESPA-2540 is a highly efficient 2.5-inch by 40-inch commercial Reverse Osmosis (RO) element from the manufacturer's flagship Energy-Saving Polyamide (ESPA) series. Designed by Hydranautics (a Nitto Group Company), this low-energy membrane provides high performance for brackish water applications, including small industrial systems, water stores, and commercial pretreatment.

The ESPA-2540 is specifically engineered to operate at lower applied pressures compared to standard high-pressure membranes, thereby significantly reducing energy costs without compromising water quality. It achieves a high nominal salt rejection rate of and delivers a robust permeate flow of when tested at just . This combination of high quality and energy efficiency makes the ESPA-2540 an ideal choice for reliable and cost-effective water purification.

 

Specifications Table

 

Characteristic Specification Units / Notes
Manufacturer Hydranautics (Nitto) -
Model Number ESPA-2540 -
Product Type Low-Energy Brackish RO Energy-Saving Polyamide (ESPA)
Size (Dia. x Length) 2.5 x 40 Inch
Nominal Permeate Flow 600 (2.27) GPD ()
Nominal Salt Rejection 99.4
Minimum Salt Rejection 99.2
Active Membrane Area 28 (2.6)
Membrane Polymer Composite Polyamide -
Max Applied Pressure 600 (4.14) PSI (MPa)
Test Pressure 150 (1.05) PSI (MPa)

 

TO VIEW DATA SHEET LARGER RIGHT CLICK SHEET AND SELECT OPEN IMAGE IN NEW TAB

 

Model # Diameter x Length GPD Rejection Typical Pressure
ESPA-2540 2.5 x 40 750 98% 150



    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.

    View full details