Description
FRP Membrane Pressure Vessel – 8040 End Port, 300 PSI | UV Water Systems Oman
The FRP membrane pressure vessel in 8040 end-port format, rated 300 psi, is the industrial-grade housing for 8-inch diameter RO elements — the size used in Oman’s 100–500 m³/day industrial RO plants. Supplied by UV Water Systems Muscat, every FRP membrane pressure vessel ships with stainless steel end flanges, multi-element capacity (1, 3, 4 or 6 elements per vessel) and a 300 psi pressure rating, the correct specification for industrial brackish water RO running at 10–20 bar.
Why This Matters for Oman Water Quality
Groundwater across Oman commonly runs 1,500–5,000 ppm TDS, so industrial plants operate their RO trains at high feed pressure for long hours in high ambient temperature. A filament-wound FRP membrane pressure vessel handles that duty far better than metal housings because it does not corrode on the brine side and holds its pressure rating over years of cycling.
The end-port configuration locates the permeate port at one end of the vessel rather than mid-vessel, which simplifies manifold piping in large multi-vessel RO train arrays. On a 250 m³/day plant with 12 or more vessels in parallel, end-port vessels cut the number of permeate connections and leak points roughly in half compared with side-port vessels. UV Water Systems selects side-port or end-port based on your plant layout and piping design.
Technical Specifications
- Format: 8-inch diameter × 40-inch length per element
- Pressure Rating: 300 psi (20.7 bar) BWRO service
- Port Configuration: End port — permeate exit at one end
- Capacity: 1, 3, 4 or 6 elements per vessel (specify)
- Construction: Filament-wound FRP, stainless steel end flanges
- Permeate Port: 1.5-inch NPT or BSP
- Fittings: Vent, drain, brine seal interconnector connections
- Compatible: DuPont Filmtec BW30-8040, Toray TM720D-400 and other 8040 elements
- Standard: Designed to Oman / GCC industry requirements
- Quality: ISO 9001:2015 certified supply chain — UV Water Systems, Muscat
How to Size an FRP Membrane Pressure Vessel
Vessel selection follows the membrane array, not the other way round. Fix the required permeate flow, choose the element model and recovery rate, then divide the element count across vessels so each stage holds an equal number. A 200 m³/day plant on BW30-8040 elements typically lands on a 2:1 array of six-element vessels. Confirm three things before ordering: the feed pressure at design temperature stays under 20 bar, the permeate port thread matches your manifold, and there is enough clear space at the head end to withdraw a full 40-inch element. Our engineers in Muscat run the projection and issue the array drawing with every quotation, so the vessels you receive match the RO membranes and skid you are building.
Applications in Muscat & Oman
Industrial RO plants (100–500 m³/day) across Oman, replacement vessels for existing industrial RO systems, new RO train construction for the Muscat industrial sector, and any application needing an 8040 BWRO membrane housing. See related filter vessels and industrial RO systems.
Frequently Asked Questions
What is the difference between side-port and end-port vessels? In a side-port vessel, permeate exits through a fitting mid-vessel; in an end-port vessel, permeate exits at one end. End-port is preferred for large multi-vessel arrays because permeate piping runs to one end of the rack, simplifying installation and reducing fittings. UV Water Systems selects the configuration based on plant layout.
Can these vessels handle seawater desalination pressures? No. The 300 psi FRP membrane pressure vessel is for brackish water service only, up to 20 bar. Seawater desalination operates at 55–70 bar and requires 1,000 psi rated SWRO vessels. UV Water Systems supplies both BWRO (300 psi) and SWRO (1,000 psi) vessels. Call +968 9763 7786.
How long does an FRP vessel last? With correct installation, clean feed water and the brine seals replaced at each membrane change, ten years of service is normal in Oman. Direct sunlight and mechanical strain from unsupported piping are the two things that shorten vessel life, so we mount every vessel on a proper rack with flexible connections.
Do you deliver and install across Oman? Yes. UV Water Systems covers all Muscat governorate areas and ships products and spare parts to every wilayat in Oman. Call +968 9763 7786 or email sales@waterfilteroman.com.
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 complete water treatment solutions for residential, commercial and industrial clients across Oman. Call +968 9763 7786 or visit www.uvwater.biz.




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