RTM41HF050E High Flow Reverse Osmosis Security Filter Cartridge
Introduction:If you are sourcing an RTM41HF050E high flow reverse osmosis security filter cartridge for industrial RO pre-filtration and process water polishing, this 40-inch coreless pleated element from LEFILTER high flow filter series delivers a stable 5 micron filtration rating with ultra-large effective filtration area. It reliably intercepts fine silt, suspended solids, rust particles and colloidal impurities, protecting reverse osmosis, nanofiltration and ultrafiltration membranes from fouling. As a drop-in interchangeable spare part, it fits standard 40-inch housings and is widely deployed in seawater desalination, power plants, coal chemical and municipal water projects.
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Product Overview
RTM41HF050E is a 40-inch large-flow security filter cartridge belonging to the RTM series. It adopts a 6-inch large outer diameter, single open-end structure and inside-to-outside radial filtration mode. The filter media is pure polypropylene, supported by PP diversion layers, with an end cap of glass-fiber reinforced polypropylene and an EPDM sealing ring as standard. All joints are manufactured by advanced hot-melt welding without any adhesive or surfactant, eliminating secondary contamination. The pleated structure maximizes filtration area and dirt holding capacity, allowing a single 40-inch element to handle up to 80 m³/h. This design reduces cartridge quantity and filter-vessel investment, making it a practical choice for medium and large water treatment systems.
Working Principle
RTM41HF050E operates on the inside-to-outside filtration principle. Raw water enters the inner cavity from the top open end and flows radially outward through the multi-layer pleated polypropylene media. Coarse particles are captured on the inner layers, while fine silt and colloids are intercepted by depth filtration inside the dense pleats. The U-shaped sealing groove and EPDM O-ring prevent unfiltered fluid bypass, ensuring consistent 5 μm efficiency. Because there is no metal core, all trapped contaminants stay locked inside the cartridge, making replacement and waste disposal safer and more economical.
Core Technical Specifications
Core Advantages
Ultra-large flow capacity:
A single 40-inch element reaches 80 m³/h, cutting cartridge quantity and vessel investment.
Ultra-large flow capacity:
A single 40-inch element reaches 80 m³/h, cutting cartridge quantity and vessel investment.
Stable 5 μm filtration:
PP media provides consistent fine-particle interception for reliable membrane protection.
Wide chemical compatibility:
Full polypropylene construction resists acids, alkalis and organic solvents for most industrial water conditions.
No metal core:
Lower disposal cost, safer handling and full incineration compatibility.
Glue-free hot-melt welding:
No adhesive shedding and no secondary pollution, extending service life.
Main Application Scenarios
Reverse osmosis security pre-filtration for seawater and brackish water desalination
Power plant boiler feed-water and condensate-water pretreatment
Coal chemical, steel and petrochemical process water filtration
Municipal water-supply and wastewater reuse pretreatment
Food & beverage and pharmaceutical process water protection
Compatibility & Cross Reference
FAQ
Q1: Does RTM41HF050E fit my existing filter housing?
A1: Yes. Its 40-inch length and 6-inch outer diameter match standard large-flow filter vessels with no modification.
Q2: When should I replace it?
A2: Replace when differential pressure reaches 2.0–2.4 bar. Service life depends on raw-water impurity concentration.
Q3: What is the maximum operating temperature?
A3: The maximum continuous operating temperature is 70 ℃. Higher temperatures may deform PP media.
Q4: Are other micron grades available?
A4: Yes. Grades from 0.5 to 40 μm are available for bulk and customized orders.
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