4" x 40" | 2450 GPD | 150 psi | 99.4% Rej. | Hydranautics ESPA Low Pressure Membrane (Replaces ESPA1-4040)
SKU: 47164047318

4" x 40" | 2450 GPD | 150 psi | 99.4% Rej. | Hydranautics ESPA Low Pressure Membrane (Replaces ESPA1-4040)

$151.31 $168.12
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Description

4" x 40" | 2450 GPD | 150 psi | 99.4% Rej. | Hydranautics ESPA Low Pressure Membrane (Replaces ESPA1-4040)Hydranautics ESPA1 LD 4040 4" x 40" Membrane Element Hydranautics ESPA1 LD 4040 is used in the treatment of low TDS waters to produce potable water. ESPA1 LD 4040 membrane uses Low Differential LD technology to minimize colloidal fouling when used with conventional pre treatment equipment. LD membranes offer consistently low feed pressures and longer intervals between cleanings. The energy required to pressurize RO feed water is the largest


Hydranautics ESPA1-LD-4040 4" x 40" Membrane Element

Hydranautics ESPA1-LD-4040 is used in the treatment of low TDS waters to produce potable water. ESPA1-LD-4040 membrane uses Low Differential LD technology to minimize colloidal fouling when used with conventional pre-treatment equipment. LD membranes offer consistently low feed pressures and longer intervals between cleanings.

The energy required to pressurize RO feed water is the largest contributor to the total energy consumption of the RO plant. Hydranautics ESPA1-LD-4040 membranes are an ideal choice for applications demanding high-energy efficiency, with uncompromised productivity and salt rejection. Operating at significantly lower pressures, Hydranautics ESPA1-LD-4040 elements produce high quality water in a range of water treatment applications, ensuring energy cost savings.

Hydranautics ESPA1-LD-4040 membranes are used in the treatment of drinking water, industrial process waters, municipal and industrial waste water recovery and reuse because of this exception performance capability. These membranes also serve as part of polishing units in seawater desalination plants when boron rejection is critical.

ESPA1-LD-4040 is the replacement for Hydranautics ESPA1-4040 membrane element, which has been discontinued by the manufacturer.

ESPA1-LD-4040 Specifications

Manufacturer Model: ESPA1-LD-4040
Brand: Hydranautics Nitto
Replaces Model: Hydranautics ESPA1-4040
Permeate Flow: 2,450 gpd (9.27m3/day)
Salt Rejection: 99.4% (99.2% Minimum)
Test Feed Pressure: 150 psi (1.05 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: Spiral Wound
Membrane Polymer: Composite Polyamide
Membrane Active Area: 80 ft2 (7.4 m2)
Feed Spacer: 34 mil (0.864 mm)


Shipping Notes
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Exchange/Return Notes
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SKU: 47164047318

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4.5 ★★★★★
Based on 1926 reviews
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Product Reviews
C
Verified Purchase
C N Rosa
New York, US
★★★★★ 5
Very well made, matches width of Keychron Q6 perfectly, great for bigger hands!
This is a nicely finished slab of wood that is an EXACT match for my Keychron Q6 in both width and height. Depthwise, this is 4", so if you got larger hands (as I do), this is a bit better than the silicone Keychron version which I believe is 3.5" or so in depth. The non-stick feet are a nice feature, and the profile is wonderful to type on. Only issue with the item I received is a small nick right below the Glorious emblem on the lower right of the wrist rest - may have been an errant tool mark. However, this doesn't detract in my own opinion, from the well-designed profile and features of this wrist rest and was easily covered with a furniture marking pen. I'm still giving this item 5-stars and getting another one for the office!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 7, 2025
J
Verified Purchase
Jesús Jaén
Omaha, US
★★★★★ 4
Glorious Wooden Palm Rest Durability and Stability in an Elegant Design
Color: Onyx, Size: Mouse Wrist Rest, Color: Onyx, Size: Mouse Wrist Rest
After years of using foam palm rests, I always encountered the same problem: they deformed over time, losing height, ergonomics and, consequently, their usefulness. This is especially critical when you spend between 3 and 8 hours a day at the PC for work, study or gaming, since a bad posture can increase the risk of suffering from carpal tunnel syndrome. This is where Glorious' wooden palm rests come in, a solution that eliminates deformations and offers an ideal height for both the mouse version and the TKL (Tenkeyless) version. Positive points • Solid and durable construction: Unlike foam, wood maintains its shape and provides stable support over time. • Elegant and minimalist design: Its finish gives a premium touch to any setup. • Effective non-slip base: The bottom rubbers prevent unwanted movements, providing total stability. • Easy maintenance: Although wood is slightly porous and can retain natural oils or residue from creams and perfumes, cleaning it is easy. Areas for improvement • Less softness than foam: Although still comfortable, wood sacrifices some of the cushioned feel that some prefer. A redesign with a foam strip on top could improve this. • Inconsistent finish between versions: I bought the mouse rest and the TKL at the same time, but noticed that the color tones were different (one blacker than the other). It doesn't affect functionality, but it does affect aesthetics. If you're looking for durability, stability, and a sophisticated design, this is a highly recommended palm rest, especially if you find it on sale. Although it's not as soft as the foam ones, it does its job of providing ergonomic support exceptionally well. An excellent complement for those who spend long hours at the PC and are looking for a sturdier alternative to traditional palm rests.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 5, 2025
M
Verified Purchase
M. Blank
Carnegie, US
★★★★★ 5
great mouse rest
Color: Golden Oak, Size: Mouse Wrist Rest
This works really well for for elevating your wrist, I use an apple trackpad it puts my wrist a little too high so what I did was put some rubber pads on the back of my trackpad to raise it up. It now gives the perfect height and good support I can even lean on it. It works well to the fact that it gives you very good support it's not uncomfortable and it's very easy to clean and looks very nice on my desk, because it's made out of real wood.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 13, 2022
M
Verified Purchase
M P
Lowell, US
★★★★★ 5
Great wrist rest. Smooth finish, good looks, and ideal wrist angle.
This wrist rest sets you up for pretty optimal, level height to prevent future wrist problems. I went with the nice reddish/brown color as it matches my brown wood Edifier speakers and other brown accessories very nicely. Nice matte finish that avoids showing finger prints and skin oils. The color is perfect, not too red or too brown. Keep in mind if your keyboard is angled in the front it will leave a bit of a gap, however it is unnoticeable to me. Also, make sure your arm rests of your chair can come high enough to meet the half inch or so thick wrist rest. My arm rests are a bit low for the time being so some extra pressure is put on my arm behind the wrist when resting on the chair supports.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 29, 2021
M
Verified Purchase
MK
Fort Morgan, US
★★★★★ 3
Not for me
Color: Golden Oak, Size: Mouse Wrist Rest
It's tough to review something like this that functions perfectly, but just wasn't the right fit. The Glorious wrist rest for the keyboard is perfect and exactly what I wanted/needed, but the mouse rest caused hand and wrist pain. I swapped it out for a squishy alternative and that worked much better. I have a theory it might have been due to the relatively low height of my ektecity gaming mouse relative to the mouse rest. My keyboard is a higher height and that may be why the wood keyboard rest works so much better.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 22, 2024

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