4x40 / 4040 Industrial RO Membrane Elements

SpiroPure's NSF-certified industrial reverse osmosis (RO) membranes are effective for commercial RO systems and other heavy-duty RO applications. 4040 membrane elements, such as the brackish water BW4040 RO membrane, ultra-low pressure ULP-4040 membrane, XLE-4040 / XLP 4040 extremely low-pressure membrane, FLR-4040 / FR-4040 fouling-resistant membrane, and more, provide high-performance TDS removal. Seawater desalination membranes provide high rejection of sodium for seawater treatment and other high-salinity water treatments.

	Membrane Type	Model	Rejection Rate	Average Permeate ±15%	Feedwater NaCl	Fresh Water Recovery Rate	Concentration of Salt Solution (Feedwater NaCl)	Feed Spacer	Maximum Recommended NaCl	Maximum Operating Pressure
4040 RO Membranes	Extremely Low Pressure	SP-XL4040 SP-XL8040	98.5%	2,400 GPD @ 100 psi 10,500 GPD @ 100 psi	500 ppm	15%	500 ppm	28 mm	< 2,000 ppm	600 psi
	Ultra Low Pressure	SP-UL4040 SP-UL8040	99.4%	2,400 GPD @ 150 psi 10,500 GPD @ 150 psi	1,500 ppm	15%	1,500 ppm	28 mm	< 5,000 ppm	600 psi
	Energy Saving	SP-ES8040	99.4%	10,500 GPD @ 150 psi	1,500 ppm	15%	1,500 ppm	34 mm	< 5,000 ppm	600 psi
	Brackish Water	SP-BW4040 SP-BW8040	99.5%	2,400 GPD @ 225 psi 10,500 GPD @ 225 psi	2,000 ppm	15%	2,000 ppm	28 mm	< 10,000 ppm	600 psi
	Fouling Resistant	SP-FR4040 SP-FR8040	99.5%	2,400 GPD @ 225 psi 10,500 GPD @ 225 psi	2,000 ppm	15%	2,000 ppm	34 mm	< 10,000 ppm	600 psi
	Seawater Desalination	SP-SW4040 SP-SW8040	99.7%	1,700 GPD @ 800 psi 9,000 GPD @ 800 psi	32,000 ppm	8%	32,000 ppm	28 mm	< 40,000 ppm	1,200 psi

Membrane Type	SpiroPure	Dupont / Filmtec	Toray	Hydranautics / Nitto	GE / SUEZ	Axeon	LG Chen	Hydron
Extremely Low Pressure	SP-XL4040	XLE-4040	TMH10A	ESPA4-4040		XE1–4040	LG BW 4040 UES	HLE-4040
Extremely Low Pressure	SP-XL8040		TMH20A-400C	ESPA4-LD		XE1-8040	LG BW 400 UES
Ultra Low Pressure	SP-UL4040	LE-4040	TMG10D	ESPA2-4040		LE1-4040	LG BW 4040 ES
Ultra Low Pressure	SP-UL8040	ECO PRO-400	TMG20D-400	ESPA1/ESPA2		LE1-8040	LG BW 400 ES	HLP-8040
Energy Saving	SP-ES8040	BW30XFRLE-400/34	TLF-400DG	ESPA2-LD
Brackish Water	SP-BW4040	TW30-4040	TML10D	CPA2-4040	AG4040FM	RE1-4040	LG BW 4040 R	BW-4040
Brackish Water	SP-BW8040	BW30-400	TML20D-400	PROC10	AG8040F 400	RE1-8040	LG BW 400 R	BW-8040
Fouling Resistant	SP-FR4040		TML10D	LFC3-LD-4040
Fouling Resistant	SP-FR8040	BW30FR-400/34	TML20D-400	LFC3-LD	AG8040F-400FR,34		LG BW 400 R G2
Seawater Desalination	SP-SW4040	SW30-4040	TM810V	SWC5-LD-4040		SE1-4040	LG SW 4040 R
Seawater Desalination	SP-SW8040	SW30XLE-400	TM820V-400	SWC5-LD		SE1-8040	LG SW 400 R

Fouling-resistant membranes have a wider spacer to reduce clogging, making them ideal for wastewater and other heavy-duty applications. When you need 4x40 membranes that deliver high RO performance, our brackish water, ultra-low pressure, and extreme-low pressure elements are effective options. Each option meets progressively lower pressure requirements to help reduce energy consumption.

Find Compatible RO Membranes

Finding the right replacement RO membrane is straightforward with All Filters’ cross-reference chart, located just below the specifications chart. First, check the Membrane Type column to find the category that matches the membrane you need to replace. Next, compare your current membrane model and brand, such as XLE-4040 Dupont / Filmtec, TMH10A Toray, or ESPA4-4040 Hydranautics / Nitto in the first three rows and columns.

Specifications for a Perfect Fit

Once you’ve found your model and brand, you’ll be able to determine which SpiroPure 4x40 RO membrane is a compatible replacement. SpiroPure 4040 RO membranes aim to match OEM quality, offering reliable performance with significant cost savings. If you refer to the specifications chart, you can compare aspects like rejection rate, feedwater tolerance, and fresh water recovery rate.

Support and Benefits at All Filters

For help choosing compatible membranes, our customer support team is available seven days a week. Here are some key benefits you’ll enjoy when shopping at All Filters:

Wide selection: A comprehensive range of filters to cover different models, types, and usage requirements.
Cost savings: Cost-effective products, including SpiroPure 4x40 RO membranes, which deliver high quality at 30–50% the cost of OEM filters.
High quality: Our filters aim to deliver the same high standards and reliability as original manufacturer options.

Buy 4040 RO Membranes Online

Get high-quality membranes for your filtration system at affordable prices from All Filters. Use our cross-reference chart to find the right filter or contact our friendly customer service team. Enjoy fast and reliable delivery, with most orders shipped the same day. Order 4x40 RO membranes online today, and enjoy free shipping on orders over $99.

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4x40 / 4040 Industrial RO Membrane Elements

Membrane Type

Model

Rejection Rate

Average Permeate ±15%

Feedwater NaCl

Fresh Water Recovery Rate

Concentration of Salt Solution (Feedwater NaCl)

Feed Spacer

Maximum Recommended NaCl

Maximum Operating Pressure

4040 RO Membranes

Extremely Low Pressure

SP-XL4040

SP-XL8040

98.5%

2,400 GPD @ 100 psi

10,500 GPD @ 100 psi

500 ppm

15%

500 ppm

28 mm

< 2,000 ppm

600 psi

Ultra Low Pressure

SP-UL4040

SP-UL8040

99.4%

2,400 GPD @ 150 psi

10,500 GPD @ 150 psi

1,500 ppm

15%

1,500 ppm

28 mm

< 5,000 ppm

600 psi

Energy Saving

SP-ES8040

99.4%

10,500 GPD @ 150 psi

1,500 ppm

15%

1,500 ppm

34 mm

< 5,000 ppm

600 psi

Brackish Water

SP-BW4040

SP-BW8040

99.5%

2,400 GPD @ 225 psi

10,500 GPD @ 225 psi

2,000 ppm

15%

2,000 ppm

28 mm

< 10,000 ppm

600 psi

Fouling Resistant

SP-FR4040

SP-FR8040

99.5%

2,400 GPD @ 225 psi

10,500 GPD @ 225 psi

2,000 ppm

15%

2,000 ppm

34 mm

< 10,000 ppm

600 psi

Seawater Desalination

SP-SW4040

SP-SW8040

99.7%

1,700 GPD @ 800 psi

9,000 GPD @ 800 psi

32,000 ppm

8%

32,000 ppm

28 mm