Description

4040 Stainless Steel RO Housing – Heavy‑Duty Membrane Vessel

The 4040 Stainless Steel RO Housing is a robust pressure vessel crafted from 304‑grade stainless steel. It holds a standard 4″ x 40″ RO membrane and offers superior strength and corrosion resistance compared with plastic housings, making it ideal for demanding water purification systems.

Because this housing is built to endure up to 300 PSI, it works well in industrial, commercial, and high‑capacity residential reverse osmosis applications where durability and pressure resistance are essential. Its strong body helps protect internal components, even under continuous use.

Technical Specifications

Here are the key details for this RO membrane housing:

• Membrane Compatibility: Standard 4″ x 40″ RO membranes (most brands)
• Housing Material: 304 stainless steel for strength and rust resistance
• Maximum Working Pressure: 300 PSI (≈21 bar)
• End Cap Material: Glass‑reinforced polyimide
• O‑Ring Material: EPDM seals for secure pressure retention
• Port Sizes: Feed and concentrate 3/4″ BSP female; permeate 1/2″ BSP female
• Closure Type: U‑clamp design for secure sealing and easier maintenance

This stainless steel construction delivers excellent corrosion resistance, so the housing lasts longer than many FRP or plastic housings in environments where metal contact and moisture are constant.

How It Works in RO Systems

In a reverse osmosis setup, high‑pressure feed water enters the housing and moves along the membrane’s surface. First, water flows through the inlet port. Then, the semi‑permeable membrane separates to produce purified water (permeate), which exits through the centre outlet, while reject water leaves via the side port. Therefore, the housing supports effective water purification with minimal leaks and stable performance.

Benefits of Stainless Steel Construction

Using a stainless steel RO vessel offers several advantages:

• Long Life: Stands up to corrosion better than non‑metal housings.
• Pressure Reliability: Designed for high‑pressure operation with stable performance.
• Easy Maintenance: The U‑clamp design allows quicker membrane changes.
• Wide Use: Suitable for factories, labs, food & beverage plants, and large home setups.

Installation Tips

Mount the housing on a stable frame, and always use proper thread sealant on BSP fittings to prevent leaks. Also, check the EPDM O‑rings regularly and replace them if worn, to keep the system tight and effective.