SKU: 83110949583

4" x 40" | 2000 GPD | 150 psi | 99.6% Rej. | Hydranautics ESPA Low Pressure Membrane (Replaces ESPA2-4040)

Sale price$166.70 Regular price$185.22
Save 10%

Pay in installments of $46.30 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Sep 2 - Sep 7

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

4" x 40" | 2000 GPD | 150 psi | 99.6% Rej. | Hydranautics ESPA Low Pressure Membrane (Replaces ESPA2-4040)Hydranautics ESPA Series RO Membrane Elements ESPA2 LD 4040 Ultra Low Energy 4" x 40" Reverse Osmosis Membrane Element Hydranautics ESPA2 LD 4040 membrane provides optimum salt rejection and permeate flows and features Hydranautics Low Differential LD Technlogy to minimize colloidal fouling when used with conventional pre treatment equipment. Hydranautics ESPA2 LD 4040 membranes offer consistently low feed pressures and longer intervals between


Hydranautics ESPA Series RO Membrane Elements

ESPA2-LD-4040 Ultra-Low Energy 4" x 40" Reverse Osmosis Membrane Element


Hydranautics ESPA2-LD-4040 membrane provides optimum salt rejection and permeate flows and features Hydranautics Low Differential LD Technlogy to minimize colloidal fouling when used with conventional pre-treatment equipment. Hydranautics ESPA2-LD-4040 membranes offer consistently low feed pressures and longer intervals between cleanings.

ESPA2-LD-4040 membranes are commonly chosen when lower permeate TDS and lower feed pressures are needed. Offering the highest energy efficiency at lowest costs, ESPA2 elements are used in large municipal wastewater reclamation plants.

ESPA2-LD-4040 is the replacement for Hydranautics ESPA2-4040 membrane element, which has been discontinued by the manufacturer.


ESPA2-LD-4040 Specifications

Manufacturer Model: ESPA2-LD-4040
Brand: Hydranautics Nitto
Replaces Model: Hydranautics ESPA2-4040
Permeate Flow: 2,000 gpd (7.57m3/day)
Salt Rejection: 99.6% (99.4% Minimum)
Test Feed Pressure: 150 psi (1.03 MPa)
Test Temperature: 77°F (25°C)
Test Recovery: 15%
Test pH Range: 6.5 to 7.0 pH
Test Feed: 1500 ppm NaCl Solution
Configuration: Low Fouling Spiral Wound
Membrane Polymer: Composite Polyamide
Membrane Active Area: 80 ft2 (7.4 m2)
Feed Spacer: 34 mil (0.864 mm)


Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 83110949583

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.1 ★★★★★
Based on 12 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
S
Verified Purchase
SLee
Draper, US
★★★★★ 5
Squeaks for a while
Size: Medium, Style: Squeaker
I've got probably 10 of these, now. The squeaker fails pretty quickly. But our dog still likes them, just not as much as when they squeak. I'm tossing these a good 75 yards and farther. The Chuckit glowballs make sounds through their holes so no separate squeakers there. Dog really likes those glowballs.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 26, 2026
M
Verified Purchase
MRSWST
Lexington, US
★★★★★ 4
Great quality but the squeaker doesn't last long - still a good value
Size: Medium, Style: Squeaker
I have golden retrievers who never get tired of playing balls. These are VERY durable. No seams to split. They tend to chew as they bring the balls back, so the squeaker doesn't last long. Would highly recommend these. I have them on auto-delivery!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 15, 2025
N
Verified Purchase
Natalie Oakley
Massapequa, US
★★★★★ 5
Highly recommend
Size: Medium, Style: Squeaker
My dog loves these! They are now his absolute favorite! The squeaker lasts a lot longer than most. The rubber isn’t hard on his teeth and he likes how squishy they are and continues to play with it long after the squeaker dies. Highly recommend and will be buying more
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 5, 2026
M
Verified Purchase
Mr. Christopher B. Kende
Fort Morgan, US
★★★★★ 5
Great fetch toy.
Size: Medium, Style: Squeaker
My dog loves these balls. They are a bit softer than the normal ones and bounce well. The squeaker is not too loud but definitely makes the ball more interesting. I highly recommend these.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 28, 2026
V
Verified Purchase
Verucat
Natrona Heights, US
★★★★★ 5
Yes!
Size: Medium
Durable. Squeak doesn't last forever with my aggressive chewers but crinkle does. Best balls.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 28, 2025

recommand products