Composite RO Membrane Housing
Composite RO membrane housing is crucial in reverse osmosis systems, supporting membranes and withstanding high pressure and corrosion. KaT Solution offers reliable composite housings in 4040 and 8040 sizes for commercial and industrial water treatment.

Composite RO membrane housing is a critical component in reverse osmosis (RO) systems, designed to safely contain and support RO membranes while withstanding high pressure and corrosive environments. At KaT Solution, we provide reliable, high-performance composite housings in two standard sizes: 4040 and 8040, ideal for both commercial and industrial water treatment applications.
Product Highlights
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High-pressure tolerance: Designed for operating pressures up to 300–450 psi (depending on model)
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Corrosion-resistant construction: Made of durable FRP (Fiberglass Reinforced Plastic) with smooth epoxy interior lining
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Lightweight & robust: Easier to handle and install compared to stainless steel alternatives
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Universal compatibility: Fits most standard 4040 and 8040 RO membrane elements
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End-entry and side-entry options for flexible piping configurations
Available Models
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Composite 4040 Housing
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Length: suitable for 4” x 40” membrane
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Operating pressure: up to 300 psi
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Widely used in commercial RO systems, food & beverage, and light industrial applications
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Composite 8040 Housing
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Length: suitable for 8” x 40” membrane
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Operating pressure: up to 450 psi
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Commonly installed in large-scale industrial, municipal, and wastewater reuse systems
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Applications
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Reverse osmosis systems (RO)
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Seawater and brackish water desalination
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Industrial process water filtration
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Boiler feed and cooling tower makeup
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Food & beverage and electronics rinse water systems
With in-stock availability and technical support, KaT Solution delivers composite membrane housings that meet the needs of durability, performance, and long-term reliability. Whether you’re building a new RO system or replacing old vessels, our 4040 and 8040 composite housings offer the quality you can trust.