Stainless Steel RO Membrane Housing – 4″ End Entry Series (300 PSI)
Premium <strong>Stainless Steel RO Membrane Housing</strong> designed for commercial 4040 reverse osmosis elements. Constructed from heavy-duty SUS304 or 316L, this housing features a reliable end-entry clamp closure system and is rated for 300 PSI, making it the industry standard for durable, sanitary water purification systems.
Product Description
The Hygienic Choice for Commercial Filtration.
The Stark 4-inch Stainless Steel Membrane Housing is the robust protective shell for your valuable reverse osmosis elements. Unlike PVC housings that can degrade under UV light or FRP housings that may not meet strict sanitary requirements, our stainless steel vessels offer superior corrosion resistance, UV stability, and structural strength.
Featuring a polished exterior and a seamless body option, these housings are specifically engineered for applications requiring high hygiene standards, such as food & beverage production, pharmaceutical water, and premium spot-free rinse systems.
Material Certification:
Ensuring the authenticity of 304/316L stainless steel is critical for corrosion resistance. For raw material Mill Certificates, hydrostatic pressure test reports (1.5x safety factor), and detailed dimensional drawings, please reference the technical data at our manufacturing division:
Stark Manufacturing – SS RO Housing Technical Specs
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Product Parameter
Below are the specifications for our 4-inch End Entry series. Compatible with all standard 4040 RO membranes (Dow, Hydranautics, Toray, Vontron).
| Model | Dimensions | Element Length | Feed/Conc. Port | Permeate Port | Action |
|---|---|---|---|---|---|
| STK-4014-1 | 4″ x 14″ | 1 x 14″ | 1/2″ | 1/2″ | Inquiry |
| STK-4021-1 | 4″ x 21″ | 1 x 21″ | 3/4″ | 1/2″ | Inquiry |
| STK-4040-1 | 4″ x 40″ | 1 x 40″ | 3/4″ | 1/2″ | Inquiry |
| STK-4040-2 | 4″ x 80″ | 2 x 40″ | 3/4″ | 1/2″ | Inquiry |
| STK-4040-3 | 4″ x 120″ | 3 x 40″ | 3/4″ | 1/2″ | Inquiry |
| STK-4040-SM (Seamless) | 4″ x 40″ | 1 x 40″ | 3/4″ | 1/2″ | Inquiry |
*Standard design pressure: 300 PSI. Material: SUS304 (Standard) or SUS316L (Optional).
Applicable Industry
- Food & Beverage Production:
Stainless steel construction meets sanitary requirements for bottled water and beverage processing (unlike fiberglass). - Commercial Kitchens:
Ideal for restaurants and coffee shops where compact, hygienic filtration systems are visible and must meet health codes. - Biotech & Medical:
Perfect for laboratory water systems where zero light penetration is critical to prevent algae growth inside the housing.
Advantage One
Superior Corrosion Resistance & Hygiene
Stark Stainless Steel RO Membrane Housings are built to last. Made from high-grade SUS304 or SUS316L, they are impervious to UV radiation, temperature fluctuations, and environmental corrosion. Compared to PVC housings which can become brittle over time, our stainless steel vessels maintain their 300 PSI pressure rating for decades, providing a safe and reliable enclosure for high-pressure RO processes.Advantage TWO
Quick-Release Clamp Design
Maintenance efficiency is key for system operators. Our “End Entry” design features a heavy-duty stainless steel clamp closure system that allows for tool-free opening. This enables technicians to replace 4040 membrane elements in minutes rather than hours, significantly reducing downtime during routine maintenance.Related Products
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FAQ
Q1: How long does the reverse osmosis system last?
The lifespan of a reverse osmosis system depends on water quality and maintenance. Typically, the membrane lasts 2–3 years, while the system itself can last over 10 years with proper care.
Q2: Can the system be customized based on different water conditions?
Yes, all our systems are fully customizable. We analyze your water report and application needs before providing tailored solutions.
Q3: What standards does STARK equipment comply with?
Our products comply with CE, ISO 9001, and can be designed to meet specific regional regulations or industry standards upon request.
Q4: What is the delivery time for STARK RO systems?
Standard systems are shipped within 7–15 days. For customized orders, lead time may extend to 20–25 days depending on complexity.
Q5: Do you provide technical support or installation guidance?
Yes. We provide full technical documentation, remote guidance via video, and can dispatch engineers internationally upon request.
Q6: What is included in your quotation?
Our quotation includes the full RO system, control panel, pumps, pre-treatment units, and all necessary fittings. Installation tools and spare parts can be included upon request.