Membrane Pressure Vessels

We supply RO membrane pressure vessels in a wide variety of sizes to suit most applications

RO Membrane Housing Pressure Vessels

MDC Water carries stainless steel and fiberglass (FRP) reverse osmosis membrane housings in a wide variety of sizes, end cap styles, pressure ratings, and side or end entry designs. 

We supplies 2.5″, 4″ and 8″ RO membrane pressure vessels that range in pressure from 300 psi all the way up to 1200 psi.

Reverse osmosis vessels are designed for constant use as a housing for reverse osmosis membrane.

We only work with trusted reverse osmosis membrane housing manufacturers.

2.5 Inch RO Membrane Housings

We supply RO membrane pressure vessels in a wide variety of sizes to suit most applications RO Membrane Housing Pressure Vessels MDC Water carries stainless steel and fiberglass (FRP) reverse osmosis membrane housings in a wide variety of sizes, end cap styles, pressure ratings, and side or end entry designs.  We supplies 2.5″, 4″ and 8″ RO membrane pressure vessels that range in pressure from 300 psi all the way up to 1200 psi. Reverse osmosis vessels are designed for constant use as a housing for reverse osmosis membrane. We only work with trusted reverse osmosis membrane housing manufacturers.

2.5″ FRP membrane housings are widely used in watermaker desalination and small reverse osmosis systems.
Length: 40″ or 21″ one element.
Working pressure range 300 PSI to 1200 PSI.
End port connection.

4 Inch RO Membrane Housings

We supply RO membrane pressure vessels in a wide variety of sizes to suit most applications RO Membrane Housing Pressure Vessels MDC Water carries stainless steel and fiberglass (FRP) reverse osmosis membrane housings in a wide variety of sizes, end cap styles, pressure ratings, and side or end entry designs.  We supplies 2.5″, 4″ and 8″ RO membrane pressure vessels that range in pressure from 300 psi all the way up to 1200 psi. Reverse osmosis vessels are designed for constant use as a housing for reverse osmosis membrane. We only work with trusted reverse osmosis membrane housing manufacturers.

4040 RO membrane housings are widely used in watermaker desalination and small reverse osmosis systems.
Length: from 1 to 4 elements.
Working pressure range 300 PSI to 1200 PSI.
End port connection.

8 Inch RO Membrane Housings

We supply RO membrane pressure vessels in a wide variety of sizes to suit most applications RO Membrane Housing Pressure Vessels MDC Water carries stainless steel and fiberglass (FRP) reverse osmosis membrane housings in a wide variety of sizes, end cap styles, pressure ratings, and side or end entry designs.  We supplies 2.5″, 4″ and 8″ RO membrane pressure vessels that range in pressure from 300 psi all the way up to 1200 psi. Reverse osmosis vessels are designed for constant use as a housing for reverse osmosis membrane. We only work with trusted reverse osmosis membrane housing manufacturers.

8″ FRP membrane housings are widely used in brackish and seawater reverse osmosis systems.
Length: from 1 to 8 elements.
Working pressure range 300 PSI to 1200 PSI.
End or side port connection.

Membrane Housings

They provide high permeate flows and high salt rejection at high salinity inlet water (up to 8,000 ppm NaCl Salinity), the best balance of flow and salt rejection. BW RO membranes require medium to high inlet feed water pressure (200 to 300 PSI).

On Sale

2.5"x40" Watermaker Membrane Pressure Vessel

2.5" x 40" RO Membrane Housing, 1000 PSI, 2540 Housing

1000 PSI Membrane Housing For Watermakers & Seawater Desalination

2.5 inch x 40 inch RO membrane pressure vessel / RO membrane module.

$465.00

$465.00 ~~$550.00~~

On Sale

2.5"x21" Membrane Pressure Vessel

$395.00

$395.00 ~~$480.00~~

On Sale

4040 Seawater Membrane Housing 4"x40"

4040 Seawater Membrane Pressure Vessel

1000 PSI 4 inch RO Membrane Housing For Watermakers & Seawater Desalination

$790.00

$790.00 ~~$875.00~~

Low Pressure / Ultra Low Pressure RO Membranes

Low Energy (LE) and Low Pressure (LP, ULP) reverse osmosis membrane elements are recommended for low-moderate salinity applications or/and in applications where low energy consumption is an important consideration. Low pressure membrane elements are based on 150 PSI (10.3 bar) working pressure. Ultra low pressure membranes (XLE, XLP, ULP) are designed for low salinity water to operate at ultra low pressure (extremely low energy). ULP and XLP membranes are based 100-110 PSI (around 7 bar) inlet applied water pressure.

On Sale

2.5"x40" Watermaker Membrane Pressure Vessel

2.5" x 40" RO Membrane Housing, 1000 PSI, 2540 Housing

1000 PSI Membrane Housing For Watermakers & Seawater Desalination

2.5 inch x 40 inch RO membrane pressure vessel / RO membrane module.

$465.00

$465.00 ~~$550.00~~

On Sale

2.5"x21" Membrane Pressure Vessel

$395.00

$395.00 ~~$480.00~~

On Sale

2.5"x40" Membrane Housing

2540 Inch Low Pressure Reverse Osmosis Membrane Housing

300 PSI Membrane Housing For 2.5″x40″ 2540 Membranes

$239.00

$239.00 ~~$300.00~~

On Sale

2.5"x21" RO Membrane Housing

2.5″ x 21″ Reverse Osmosis Membrane Pressure Vessel – 300 PSI

Engineered for 2521 RO membranes. Built for strength, compatibility, and performance.

Ideal for residential, commercial, industrial, and marine-grade reverse osmosis systems.

Why Choose This Membrane Housing?

Reliable Pressure Performance: Built to withstand up to 300 PSI operating pressure in demanding environments.
Universal 2521 Fit: Designed for use with FilmTec TW30-2521 and other standard 2.5″ × 21″ RO membranes.
Built for Durability: Constructed from fiberglass-reinforced polymer (FRP) with protective polyurethane outer coating for long-lasting use and clean appearance.

What’s Included

Pressure Vessel Housing: FRP body with 2.5″ × 21″ dimensions
Mounting Hardware: Pads, straps, and brackets included for secure installation
End Caps: Two PVC end caps with 1/4" female feed/concentrate and permeate ports

Compatible With:

FilmTec TW30-2521 Membranes
FilmTec SW-2521
Other industry-standard 2521 membranes
Reverse osmosis systems in residential, commercial, industrial, and marine environments

Specifications

Size: 2.5″ diameter × 21″ length
Material: Fiberglass Reinforced Polymer (FRP)
End Port Connections: 1/4" female (PVC – feed/concentrate and permeate)
Outer Coating: White polyurethane for environmental resistance and clean aesthetics
Maximum Operating Pressure: 300 PSI
Shipping: Fast across Australia, fast delivery to New Zealand

Applications

Municipal and commercial water treatment
Oil & gas processing systems
Food & beverage production
Electronics and pharmaceutical industries
Power generation and mining sectors
Automotive and general commercial water systems
Marine use – suitable for yachts and seawater makers

Get durable, high-pressure performance and universal compatibility with this 2521 membrane pressure vessel—ideal for land-based and marine RO applications.

$200.00

$200.00 ~~$280.00~~

Seawater Desalination Membranes

We offer a variety of premium grade seawater desalination reverse osmosis elements featuring both high productivity and high salt rejection to offer long-term economics for seawater desalination systems. SWRO membrane Applications: – Marine and Maritime watermakers. – Sea and land-based desalinators. – Seawater and high brackish water desalination plants.

On Sale

4"x40" Stainless Steel RO Membrane Housing

4040 Stainless Steel Reverse Osmosis Membrane Pressure Vessel.

300 PSI End Clamp Membrane Pressure Vessel for 4″ x 40″ Membranes

$235.00

$235.00 ~~$320.00~~

On Sale

4"x21" Stainless Steel RO Membrane Housing

4" x 21" Stainless Steel Reverse Osmosis Membrane Pressure Vessel

300 PSI End Clamp Membrane Pressure Vessel for 4″ x 21″ Membranes

$190.00

$190.00 ~~$270.00~~

On Sale

4"x21" 4021 FRP Membrane Pressure Vessel

4021 Reverse Osmosis Membrane Housing

300 PSI Fiberglass Membrane Housing For 4″x21″ 4021 Membranes

$295.00

$295.00 ~~$350.00~~

On Sale

4040 Seawater Membrane Housing 4"x40"

4040 Seawater Membrane Pressure Vessel

1000 PSI 4 inch RO Membrane Housing For Watermakers & Seawater Desalination

$790.00

$790.00 ~~$875.00~~

On Sale

4"x40" 4040 Membrane Pressure Vessel

4 Inch Reverse Osmosis Membrane Housing

300 PSI RO Membrane Housing For 4″x40″ 4040 Membranes

$339.00

$339.00 ~~$400.00~~

Reverse Osmosis Membranes Housings Supplier

The fiber-reinforced plastic FRP RO membrane pressure vessels (fiberglass FG) are available with 2.5 inch, 4 inch and 8 inch diameters. They are available for operating pressures of 150 psi, 300 psi, 450 psi, 600 psi, 1000 psi & 1200 psi, and compliant with ASME Sec X, NSF, and CE* (*optional).

RO Membrane tubes are used in a wide range of demanding applications, such as seawater desalination, municipal water treatment, oil & gas applications, food & beverage plants, electronics manufacturing, the power industry, wastewater treatment, mining industry, pharmaceutical industry, industrial water treatment, automotive industry and commercial water treatment.

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Membrane Pressure Vessels

RO Membrane Housing Pressure Vessels

2.5 Inch RO Membrane Housings

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Membrane Housings

2.5" x 40" RO Membrane Housing, 1000 PSI, 2540 Housing

4040 Seawater Membrane Pressure Vessel

Low Pressure / Ultra Low Pressure RO Membranes

2.5" x 40" RO Membrane Housing, 1000 PSI, 2540 Housing

2540 Inch Low Pressure Reverse Osmosis Membrane Housing

2.5″ x 21″ Reverse Osmosis Membrane Pressure Vessel – 300 PSI

Why Choose This Membrane Housing?

What’s Included

Compatible With:

Specifications

Applications

Seawater Desalination Membranes

4040 Stainless Steel Reverse Osmosis Membrane Pressure Vessel.

4" x 21" Stainless Steel Reverse Osmosis Membrane Pressure Vessel

4021 Reverse Osmosis Membrane Housing

4040 Seawater Membrane Pressure Vessel

4 Inch Reverse Osmosis Membrane Housing

Reverse Osmosis Membranes Housings Supplier

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