4-Inch End-Port FRP RO Membrane Housing

4-Inch End-Port FRP RO Membrane Housing

This 4-inch end-port FRP RO membrane housing is designed for commercial reverse osmosis systems with project-specific pressure, element and connection requirements.

4″ End-Port FRP RO Membrane Housings (low-pressure and high-pressure series) are ASME- and CE-certified components for reverse osmosis systems, combining compact design with reliable performance.
Series & Specifications:

Low-pressure series (W40E300/450): Design pressure 300/450PSI; burst pressure 6× design pressure.

High-pressure series (W40E600/1000/1200): Design pressure 600/1000/1200PSI; burst pressure 6× design pressure.

Core Performance: Both series support 1–4 membrane elements, with an operating pH range of 3–11 and temperature range of -10°C–66°C (14°F–150°F). They pass 100,000 cyclic pressure tests for long-term durability.

Connections:

Low-pressure model: 3/4″ NPT + 1/2″ BSP feed/concentrate ports; 1/2″ NPT + 1/2″ BSP permeate ports.

High-pressure model: RC3/4″ feed/concentrate port; 1/4″ NPT + 1/2″ BSP (external) permeate ports.

Compact, durable, and compatible with standard RO components, these end-port housings are ideal for small-to-medium reverse osmosis setups in industrial, commercial, or residential water treatment.

Product Advantages

In order to make up for the abrasion resistance of FRP, embedded steel rings were added to it. Winder® products will wind the embedded ring in the membrane housing during the winding process, which is integrated with the membrane housing and is not easy to fall off. The size and thickness of the embedded ring is proportional to the pressure of the membrane housing. The larger the pressure of the housing, the steel ring will thicken, so that the membrane housing and the pressure head are more firmly connected. The embedded rings are all made of stainless steel 316L, which is more resistant to corrosion and higher temperatures, and has a long service life.

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The inner wall of the membrane housing is as bright as a mirror, which can facilitate the disassembly and assembly of the membrane core; it can ensure that the membrane housing has no leakage problem.
The design of the red plug: the production material is ABS modified raw material, which is more durable; the design of the four corners is more convenient and quick to install.
π-shaped silicone ring: using food street silicone raw materials, this design is double-sealed, double-safe, leak-proof and reliable, and the quality is more stable.
There is a unique ID code on the inner wall of each membrane housing, which is used as an anti-counterfeiting mark and can also make the model of the membrane housing clear at a glance.