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ARKA
The ARKA F90TD-AGL 3 inch AGL disc filter is designed for large-flow water filtration in agricultural irrigation, municipal landscape, and industrial water treatment systems. Built with an advanced hydraulic design that minimizes head loss, this filter delivers a maximum flow rate of 50 m³/h while maintaining stable differential pressure across the disc element. The AGL configuration optimizes the flow path to maximize filter area utilization, extending service intervals and reducing maintenance frequency for commercial and enterprise-scale operations.
The AGL (Advanced Grade Laminar) design incorporates a hydraulically optimized housing interior that directs water uniformly across the entire disc stack surface. Unlike conventional T-type filters where flow concentrates toward the center of the disc stack, the AGL design distributes incoming water evenly across the full disc diameter through a calibrated inlet diffuser. This uniform flow distribution means all disc grooves contribute to filtration, effectively increasing the usable filter area without enlarging the physical housing size.
The result is lower pressure drop at equivalent flow rates compared with standard T-type designs of the same connection size. Reduced head loss translates to energy savings in pumped systems, as the pump requires less energy to maintain target pressure downstream of the filter. For gravity-fed systems, lower head loss preserves more available pressure for distribution across the irrigation network.
The F90TD-AGL uses a stack of grooved polypropylene discs as the filtration medium. Water passes through the micro-channels formed by overlapping disc grooves, trapping suspended solids on the disc surfaces and within the groove intersections. Six filtration grades are available - 40, 80, 120, 150, 200, and 300 mesh - providing options from coarse pre-filtration to fine particle retention for sensitive downstream equipment.
The disc stack is accessible by removing the upper housing cap, allowing quick removal for cleaning or grade changes. Reusable disc elements reduce ongoing consumable costs compared with disposable cartridge alternatives, while the large disc surface area of the 3 inch model means each cleaning cycle handles more accumulated debris before flow is restricted.
Parameter | Value |
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Place of Origin | Fujian, China |
Type | Other Watering & irrigation |
Brand Name | ARKA |
Model Number | F90TD-AGL |
Material | PP Plastic |
Connections | 3 inch BSP/NPT |
Filtration Grades | 40/80/120/150/200/300 Mesh |
Weight(F63TD-AGL) | 5.3kg |
Color | Black |
Max Pressure | 8 Bar |
Max Flow | 50 m³/h |
Size(F63TD-AGL) | 678×355×233mm |
With a maximum flow rate of 50 m³/h, the 3 inch AGL filter handles the water demands of large irrigation zones, industrial process loops, and municipal water distribution systems. This flow rate supports irrigation of extensive field areas per filter unit, reducing the total number of filter stations required for a given project size. For systems requiring even higher total capacity, multiple F90TD-AGL units can be installed in parallel with inlet and outlet manifolds.
The AGL hydraulic design reduces pressure drop across the filter element compared with conventional T-type configurations of equivalent size. In pumped systems, lower head loss means the pump consumes less energy to maintain target operating pressure, contributing to reduced operational costs over the filter's service life. In gravity-fed systems, preserved pressure supports more uniform distribution across the irrigation network, particularly at distant points of use.
Six available filtration grades allow system designers to select the appropriate level of particle retention for each application. Coarser grades (40-80 mesh) handle high sediment loads with longer cleaning intervals, while finer grades (200-300 mesh) protect precision equipment such as drip emitters and micro-spray nozzles. The ability to change disc stacks to different grades within the same housing provides flexibility as water conditions or system requirements change.
In commercial farms, plantations, and large greenhouse operations, the 3 inch AGL filter serves as primary or secondary filtration for drip irrigation, sprinkler, and pivot systems. The 50 m³/h flow capacity covers substantial irrigated area per unit, and the low head loss design supports longer drip line runs with fewer pressure losses. For canal or river water sources with variable sediment loads, the large disc surface area extends cleaning intervals and reduces labor requirements.
Municipal water departments, park systems, golf courses, and highway landscape maintenance programs use AGL filters to protect irrigation infrastructure from sediment damage. The 8 Bar pressure rating matches typical municipal water supply pressures, and the PP plastic housing resists corrosion from chlorinated water and road runoff contaminants. For large landscape districts, multiple filters installed in parallel provide redundancy and ensure continuous operation during maintenance of individual units.
In manufacturing and process industries, the AGL filter functions as pre-filtration for cooling water systems, boiler feed water pre-treatment, spray coating lines, and equipment wash-down systems. The large flow capacity and robust PP construction suit continuous-operation industrial environments. Available filtration grades from 40 to 300 mesh allow engineers to specify the correct level of protection for each process stage, from coarse debris removal to fine particulate control.
For systems requiring total flow rates exceeding 50 m³/h, multiple F90TD-AGL filters can be installed in parallel using a manifold arrangement. Parallel installation provides two additional benefits beyond increased total capacity: redundancy, so that one filter can be isolated for maintenance while others continue operating; and flexibility, as additional filter units can be added as system demand grows. When designing parallel installations, size the inlet and outlet manifolds to maintain balanced flow across all filter units and include isolation valves for each filter.
The AGL filter can be integrated into automated backwash systems with the addition of motorized valves and a control panel. Backwash configurations reverse the flow direction through the disc stack to dislodge accumulated debris, which is then flushed to drain. Automated backwashing reduces manual maintenance labor and ensures consistent filtration performance. When specifying a backwash system, verify that available backwash pressure and flow rate meet the filter manufacturer's recommendations for effective cleaning.
AGL refers to Advanced Grade Laminar, a housing design that uses a calibrated inlet diffuser to distribute water uniformly across the full disc stack surface. This design improves filter area utilization and reduces pressure drop compared with conventional T-type filter housings of equivalent connection size.
The primary difference is the internal flow distribution. Standard T-type filters direct water into the side of the disc stack, causing uneven flow and particle deposition. AGL filters use an inlet diffuser to spread water evenly across the entire disc area. This results in lower pressure drop, more uniform use of filter media, and longer intervals between cleaning cycles.
The ARKA F90TD-AGL 3 inch AGL disc filter has a maximum flow rate of 50 m³/h. Actual operating flow depends on system pressure, selected filtration grade, and water cleanliness. For applications requiring flow rates above 50 m³/h, multiple filters can be installed in parallel with a manifold system.
For drip irrigation systems using standard drip tape or inline emitters, a 120 to 150 mesh filter typically provides adequate protection. For micro-sprinklers or very fine emitter passages, consider 200 or 300 mesh. Always verify the manufacturer's recommended filtration level for your specific emitter model, and use a coarser pre-filter upstream if water contains large debris.
Yes, PP plastic filter housings are compatible with most liquid fertilizers and agricultural chemicals used in fertigation. For concentrated acid or strong oxidizer injections, verify chemical compatibility with the filter manufacturer before installation, as some chemicals at high concentrations may affect the housing material over extended exposure periods.
Filter sizing is based on system flow rate, available pressure, and water quality. Select a filter with a maximum flow rating that exceeds your system's design flow rate by a safety margin of 20 to 30 percent. Consider pressure drop at design flow, required filtration grade, and expected cleaning frequency. For large systems, consult an irrigation design engineer to ensure proper filter sizing and manifold configuration.
