Stainless Steel Multi-Cartridge Housing – 7×40 Inch | UV Water Systems Oman

At the industrial end of Oman’s water treatment sector — large RO plants producing 5,000–50,000 litres per hour for hospitals, industrial facilities, desalination pre-treatment, and large commercial complexes — cartridge pre-filtration at the scale of a 5×20-inch housing is insufficient. A 7×40-inch multi-cartridge housing holds seven 40-inch (1,016 mm) length industry-standard cartridges in parallel — providing pre-filtration capacity for industrial RO plants in the 15–30 m³/hour range in a single, serviceable housing assembly. UV Water Systems in Muscat designs, supplies, and installs 7×40-inch SS multi-cartridge housings as part of complete industrial water treatment pre-treatment skids for Oman’s largest water-consuming facilities, including the hospitals, food manufacturers, and oil and gas facilities in our project portfolio. The 316L stainless steel construction provides maximum corrosion resistance for industrial service with aggressive feed water chemistries, high temperature, and continuous 24-hour operation.

40-Inch Cartridge Industrial Standard

The 40-inch cartridge format is the international industrial standard for high-flow pre-filtration — used in large-scale water treatment facilities globally. At 40 inches (1,016 mm) in length, these cartridges provide 4× the dirt-holding capacity of a 20-inch cartridge and can operate at 2–3× the flow rate per cartridge compared to the 20-inch format at the same pressure drop. Seven of these in parallel provides industrial pre-filtration capacity that would otherwise require a bank of 14–20 individual 20-inch housings — with proportionally greater piping, maintenance complexity, and footprint. The 7×40 manifold housing concentrates this capacity into a single serviceable assembly that a two-person maintenance team can service in 30 minutes, rather than the hours required for equivalent individual housing arrays.

Key Features and Benefits

Seven parallel 40-inch industrial cartridges: Industry-standard 40-inch (1,016 mm) cartridge format — covers the widest range of industrial cartridge types including melt-blown PP, string-wound, pleated polyester, activated carbon, and composite cartridges from all major manufacturers.
316L stainless steel construction: Superior corrosion resistance compared to 304 SS — the 316L grade contains molybdenum for resistance to chloride-induced pitting corrosion, making it suitable for Oman’s high-TDS borehole water, seawater desalination pre-treatment, and cooling water service.
Industrial capacity — 15–25 m³/hour pre-filtration: At seven 40-inch cartridges in parallel with 5-micron PP cartridges, the housing provides 15–25 m³/hour pre-filtration capacity — matching the feed flow requirements of industrial RO plants in the 10,000–20,000 LPH range.
Single-head maintenance access: All seven 40-inch sumps connect to a single manifold head — one set of connections to isolate, seven sumps to lower for cartridge access, with all cartridges replaced and torqued in a single maintenance operation.
Rated for industrial operating conditions: Design pressure 10–12 bar, temperature to 60°C, compatible with the operating conditions of industrial RO feed water pumps and system pressures encountered in Oman’s industrial water treatment plants.

Technical Specifications

Configuration: 7 × 40-inch industrial cartridges in parallel
Material: 316L stainless steel
Cartridge compatibility: Standard 40-inch industrial cartridges (various OD options)
Max operating pressure: 10–12 bar
Design flow rate: 15–25 m³/hour (cartridge type dependent)
Connection size: 2–3 inch flanged or NPT

Applications Across Oman

UV Water Systems has installed 7×40-inch multi-cartridge pre-treatment housings at hospital water treatment plants, industrial RO systems, and large commercial water treatment facilities in Muscat. We design complete pre-treatment skids incorporating the housing with inlet/outlet piping, differential pressure indicators, automatic pressure relief, and sample valves for Oman industrial water treatment projects.

Frequently Asked Questions

What is the footprint and weight of a fully loaded 7×40 housing? A 7×40-inch SS multi-cartridge housing typically measures 1,500–1,800 mm in height, 600–800 mm in diameter, and weighs 80–150 kg fully loaded with cartridges and water — it requires floor mounting with anchor bolts and is not a portable installation. UV Water Systems provides structural support specifications and installs with appropriate mounting hardware as part of complete industrial pre-treatment skid fabrication in Muscat.

How much do replacement cartridges for a 7×40 housing cost and how often are they replaced? Replacement frequency depends on inlet water quality and daily volume treated. UV Water Systems sizes replacement frequency during system design and provides annual replacement pricing as part of industrial maintenance contracts. Contact +968 9763 7786 for a cartridge specification and annual maintenance cost estimate for your specific Oman installation.

UV Water Systems is an ISO 9001:2015 certified water treatment company based in Muscat, Sultanate of Oman, with 14+ years of experience. We supply, install, and service water treatment solutions for residential, commercial, and industrial clients across Oman. Call +968 9763 7786 or visit www.uvwater.biz.

Industrial Pre-treatment Oman

Stainless Steel Multi-Cartridge Housing 7×40 Inch – UV Water Systems Oman