RCP400-40SPP Water Treatment Filter Cartridge Technical Specification

Product Introduction

The RCP400-40SPP is a high-performance spun polypropylene (SPP) water filter cartridge, exclusively engineered for 400L/h ultra-high flow coarse pre-filtration in large-scale industrial, municipal water supply, industrial park centralized water treatment and heavy-duty commercial water purification scenarios. As the flagship ultra-high flow product of the RCP series, it adopts food-grade high-purity polypropylene raw materials combined with advanced multi-directional high-density spinning winding technology and a heavy-duty reinforced core structure, optimized with a 40SPP ultra-high flow design to achieve an optimal balance of 40-micron precision coarse filtration, 400L/h stable ultra-high flux, super high dirt-holding capacity and excellent structural anti-impact performance. Manufactured with an adhesive-free integrated forming process, the cartridge is free of heavy metals, plasticizers, organic leachables and chemical modifiers, fully complying with FDA, NSF, EU REACH and industrial water treatment material standards (GB/T, ASTM), ensuring zero secondary pollution to water bodies and meeting the dual requirements of ultra-high flow filtration efficiency and system protection. Designed as a core first-line coarse filtration barrier for ultra-high flow raw water systems with complex impurity components, it is dedicated to intercepting fine-coarse suspended solids, 40-micron particulate impurities, sediment, rust particles, colloidal aggregates and small solid debris in ultra-high flow water flow, effectively reducing the impurity load of subsequent high-precision industrial filtration equipment such as large-scale RO membranes, ultrafiltration membranes, ceramic filters and high-flow water pumps, and ensuring the stable, efficient and long-term operation of the entire ultra-high flow water treatment system. The high-density spun PP three-dimensional porous structure features excellent water permeability and anti-scouring performance, perfectly matching the ultra-high flow, continuous operation and heavy-duty working requirements of large-scale industrial and municipal water treatment scenarios.

Filtration Precision

The RCP400-40SPP features a reinforced high-density spun winding filtration structure with a nominal filtration precision of 40 microns and an absolute filtration precision of 45 microns. Its multi-layer gradient spun winding design is customized for ultra-high flow water dynamics, consisting of a dense surface interception layer, a multi-stage high-capacity impurity storage layer and a heavy-duty reinforced mechanical support layer. This structure is crafted with high-precision spinning winding technology, realizing targeted and efficient capture of all impurities with particle sizes above 40 microns in 400L/h ultra-high flow water flow, without impurity leakage caused by high-velocity water flow scouring or structural deformation. The dense surface SPP layer with uniform pore size effectively blocks 40-45 micron particulates, sediment particles, rust and colloidal aggregates that are easy to cause physical clogging, membrane pore blocking and equipment wear of subsequent high-precision industrial filtration elements; the inner multi-stage storage layer with three-dimensional interconnected porous structure can store a huge amount of intercepted impurities, avoiding rapid blockage of the cartridge and ensuring long-term stable filtration performance under continuous ultra-high flow operation. Even under 24-hour non-stop ultra-high flow working conditions (400L/h) and variable inlet pressure environments (0.15-0.35MPa), this structural design can keep the filtration precision stable and unattenuated throughout the entire service cycle, without precision degradation caused by water flow impact, material aging or structural loosening.

Flux

Under the standard operating conditions (25℃ ambient temperature, 0.25MPa inlet pressure, pure water medium), the pure water flux of the RCP400-40SPP is stably set at 400 L/h (liters per hour), the core ultra-high flow design advantage of this product. Within the recommended operating pressure range of 0.15-0.35MPa, the flux variation rate is less than 3%, maintaining ultra-stable ultra-high flow water output for large-scale industrial and municipal water treatment systems with variable inlet pressure caused by pipeline network fluctuations. When the water temperature is in the range of 5-60℃ (the optimal working temperature for large-scale industrial, municipal and industrial park ultra-high flow water purification systems), the flux changes linearly with temperature, and the flux recovery rate reaches 100% when the temperature returns to the standard value, without permanent flux loss caused by thermal deformation of high-purity spun PP materials. For actual raw water with turbidity ≤60 NTU (the recommended working turbidity for ultra-high flow medium-impurity coarse pre-filtration scenarios), the actual operating flux can still maintain more than 380 L/h, fully meeting the ultra-high flow, stable water supply and precision coarse pre-filtration requirements of large-scale industrial, municipal water supply, industrial park centralized water treatment and heavy-duty commercial water purification systems.

Salt Rejection Rate

As an ultra-high flow spun polypropylene coarse filtration cartridge, the RCP400-40SPP is optimized for the physical interception of non-ionic salt contaminants, fine-coarse colloidal salt particles, insoluble salt precipitates and salt-containing sediment aggregates with particle sizes above 40 microns, with a salt rejection rate of ≥99.9% for insoluble salt particulates and salt-containing colloidal aggregates with particle sizes above 40 microns. For soluble inorganic salts, it serves as a professional coarse pre-filtration component for large-scale industrial desalination systems, municipal water softening systems and industrial park pure water preparation systems, which can effectively reduce the fine-coarse particulate salt load in the feed water of subsequent high-precision desalination and softening membrane elements (with large effective area but high sensitivity to fine particulate impurities), avoid salt scaling, particulate fouling and membrane pore blocking on the membrane surface, thus improving the overall salt rejection and softening efficiency of the system and extending the service life of high-precision membrane elements by more than 50%. In addition, the high-purity SPP material structure with no chemical additives can intercept more than 99.8% of fine-coarse macromolecular organic salts and salt-containing impurity particles in ultra-high flow water systems without chemical reaction with salt substances or ion exchange, further optimizing the feed water quality for subsequent precision purification equipment and significantly reducing the backwashing, chemical cleaning and maintenance frequency of the whole system.

Pressure Drop

Under the rated flux (400 L/h) and standard operating conditions, the initial pressure drop of the RCP400-40SPP is ≤0.012MPa, the ultra-low pressure drop advantage of the ultra-high flow optimized spun winding structure made of high-purity polypropylene. This value is significantly lower than that of conventional PP filter cartridges of the same precision and flow rate, realizing ultra-low energy consumption operation of ultra-high flow water treatment systems and effectively reducing the power consumption of high-flow water pumps and booster equipment. Even for medium-pressure raw water supply scenarios such as municipal water supply pipelines and industrial raw water main pipelines without additional booster pumps, the cartridge can ensure unobstructed ultra-high flow water flow without causing excessive pressure loss of the whole pipeline network system. With the progress of filtration work and the gradual accumulation of a large amount of intercepted fine-coarse impurities, the pressure drop of the cartridge rises extremely slowly due to its super high dirt-holding capacity, uniform spun pore structure and ultra-high flow optimized water channel design; the recommended maximum allowable operating pressure drop is 0.10MPa. When the pressure drop reaches this threshold, the cartridge needs to be cleaned or replaced in time to avoid excessive pressure loss leading to reduced water supply flow of ultra-high flow systems, abnormal operation of subsequent industrial precision equipment and even structural damage to the cartridge caused by pressure accumulation in ultra-high flow industrial filter housings.

Molecular Weight Cutoff (MWCO)

The molecular weight cutoff of the RCP400-40SPP is precisely calibrated to 600,000 Daltons (Da), which is perfectly matched with its 40-micron filtration precision, ultra-high flow optimized structure and high-density spun polypropylene winding forming technology. This MWCO rating is customized for the physical interception characteristics and ultra-high flow water dynamics of high-purity SPP materials, which can effectively retain large macromolecular organic matter, 40-micron and above colloidal particles, macromolecular impurity aggregates, organic polymer debris and humic acid aggregates with molecular weight higher than 600,000 Da in ultra-high flow water systems. At the same time, it ensures the unimpeded passage of water molecules, small-molecular inorganic substances, trace beneficial ions and small suspended particles (below 40 microns), without affecting the normal ultra-high water permeability of the system due to material adsorption or water channel blockage. It is specially designed for the precision coarse pre-filtration requirements of ultra-high flow, medium-pressure water treatment systems with medium to high raw water impurity content, and can effectively reduce the large molecular contaminant load of subsequent industrial precision membrane elements, avoiding membrane clogging and improving the overall operation efficiency of large-scale purification systems by more than 45%.

Membrane Thickness

The RCP400-40SPP adopts a heavy-duty reinforced three-layer composite spun polypropylene membrane structure adapted to 40-micron precision coarse filtration and 400L/h ultra-high flow design, with a total effective membrane thickness of 35mm. The entire membrane structure is made of food-grade high-purity polypropylene with high melt index, ensuring the structural strength, pore uniformity and anti-scouring performance of the material to adapt to ultra-high flow water impact and 24-hour continuous operation. The surface filtration layer (7mm) is a dense high-density spun SPP membrane with uniform 40-micron pore size and ultra-high wear resistance, responsible for precision interception of 40-45 micron fine-coarse particulates, with excellent anti-scouring performance suitable for ultra-high flow raw water with complex impurity components; the middle transition support layer (21mm) is a multi-stage high-capacity gradient spun SPP membrane, the core dirt-holding area of the cartridge, which undertakes secondary interception of fine-coarse impurities and provides stable three-dimensional structural support for the surface layer, with a huge internal interconnected porous space for storing a large amount of sediment, rust particles and other impurities in ultra-high flow water flow; the bottom base layer (7mm) is a high-density high-strength spun SPP membrane combined with a heavy-duty reinforced stainless steel inner core, enhancing the overall pressure resistance, extrusion resistance and anti-impact performance of the cartridge while ensuring the structural stability of the spun winding structure under ultra-high flow working conditions, and preventing structural loosening or unwinding caused by high-velocity water flow. This scientific three-layer thickness distribution with heavy-duty reinforced design balances high precision coarse filtration efficiency, super high dirt-holding capacity, ultra-high structural strength and ultra-high flow adaptability, making the cartridge resistant to deformation, rupture and unwinding under long-term medium-pressure, ultra-high flow and high-impurity raw water scouring conditions, and suitable for installation in standard ultra-high flow industrial filter housings (304/316L stainless steel/food-grade reinforced FRP).

Replacement Cycle

The recommended standard replacement cycle of the RCP400-40SPP is 9-12 months, formulated based on the standard ultra-high flow precision coarse pre-filtration working conditions: raw water turbidity ≤60 NTU, suspended solids content ≤70 mg/L, and 24-hour continuous operation (matching large-scale industrial, municipal and industrial park ultra-high flow water treatment use habits). The high-purity spun PP material with heavy-duty reinforced structure has excellent anti-aging, anti-scouring and anti-deformation performance, which can maintain stable structural and filtration performance under long-term continuous ultra-high flow water immersion and scouring conditions. For ultra-high flow water treatment systems with extremely harsh water quality conditions (turbidity >60 NTU, suspended solids content >70 mg/L) such as industrial raw water from mining and metallurgy, municipal surface water (river/lake/reservoir water) and groundwater with high sediment content, the replacement cycle is shortened to 7-9 months according to the actual system pressure drop and water quality test results; for ultra-low-turbidity high-quality raw water pre-filtration scenarios (turbidity ≤20 NTU) such as municipal tap water deep purification, high-end industrial park centralized pure water preparation and heavy-duty commercial centralized drinking water supply, with regular professional backwashing (water/gas mixed flushing) and routine maintenance, the replacement cycle can be appropriately extended to 12-15 months, effectively reducing the use and maintenance costs of large-scale ultra-high flow water treatment systems by more than 45%.

Features

Food-Grade High-Purity SPP Raw Material: Adopts food-grade high-purity polypropylene with high melt index, no modified additives, chemical modifiers or recycled materials, ensuring material purity and structural stability, acid and alkali resistant (pH 2-14), corrosion resistant to common industrial, municipal and commercial water additives (including weak oxidants), and highly adaptable to various ultra-high flow raw water with complex impurity components.
40-Micron Ultra-High Flow Optimized Spun Winding Structure: Advanced multi-directional high-density spinning winding technology with ultra-high flow optimization forms a three-dimensional interconnected porous structure, realizing targeted interception of 40-micron and above impurities, super high dirt-holding capacity, extremely slow pressure drop rise, and stable filtration performance under 24-hour continuous ultra-high flow operation.
Ultra-Low Initial Pressure Drop for Ultra-High Flow: Optimized uniform pore size distribution, thickened multi-stage dirt-holding layer and ultra-high flow water channel design result in an initial pressure drop of ≤0.012MPa, effectively reducing the power consumption of ultra-high flow water pumps and booster equipment, realizing energy-saving and low-cost operation of large-scale water treatment systems.
Adhesive-Free Integrated Heavy-Duty Forming: Adopts advanced one-piece spinning winding forming technology combined with a heavy-duty reinforced stainless steel inner core, no adhesives, no seams, no filter bypass and no dead angles, avoiding unfiltered water leakage and chemical leaching from adhesives, ensuring the purity of filtered water in ultra-high flow coarse pre-filtration links.
Super High Structural Strength & Anti-Impact Performance: 35mm heavy-duty reinforced composite spun SPP membrane structure with a high-strength stainless steel inner core can withstand a maximum operating pressure of 1.0MPa, no deformation, no rupture, no unwinding and no delamination under medium-pressure, ultra-high flow impact and high-impurity raw water scouring for a long time.
Efficient Professional Backwash Recoverable & Reusable: For slight to moderate blockage, the filtration performance can be quickly and effectively recovered by industrial standard high-pressure water/gas mixed backwashing, the high-purity SPP surface with low adsorptivity is not easy to adhere to impurities, and the cartridge can be reused for many times, greatly reducing the replacement frequency and overall use cost.
Standard Ultra-High Flow Industrial Interface Design: RCP400 series standard ultra-high flow structural design, matching universal ultra-high flow industrial filter housings (304/316L stainless steel/FRP), with standard connection flanges and sealing gaskets, easy to install and replace, no special installation tools required, suitable for large-scale industrial and municipal water treatment system assembly and maintenance.
Dual Standard Safety Compliance & Environmental Protection: Free of any harmful substances such as heavy metals, phthalates, plasticizers and chemical additives, fully compliant with FDA/NSF international drinking water material standards and GB/T/ASTM industrial water treatment material safety standards, no chemical leaching in long-term contact with water; the homogeneous SPP material is 100% recyclable, meeting national and international environmental protection recycling requirements.
Wide Temperature & Water Quality Adaptability: Can work stably in the water temperature range of 0-70℃, suitable for ultra-high flow water treatment systems with temperature changes in industrial, municipal and industrial park scenarios; the high-purity SPP structure is highly adaptable to various poor-quality ultra-high flow raw water, including industrial raw water, municipal surface water, groundwater and tap water with complex impurities, without material degradation caused by water quality.
Low Adsorptivity & No Ion Exchange: The high-purity spun polypropylene material has low surface adsorptivity and no chemical activity, no adsorption of water-soluble beneficial ions and small-molecular organic substances in water, and no ion exchange with water quality components, ensuring the original water quality characteristics while filtering impurities, suitable for industrial process water treatment with strict water quality requirements.
24-Hour Continuous Heavy-Duty Operation Capability: The heavy-duty reinforced structural design and high-quality high-purity SPP material adapt to 24-hour non-stop continuous ultra-high flow operation, with no performance attenuation caused by long-term heavy-duty work, perfectly matching the operation characteristics of large-scale industrial and municipal water treatment systems.
Excellent Sealing Performance & Anti-Leakage: Equipped with high-quality food-grade silicone sealing gaskets at both ends, with excellent high and low temperature resistance and aging resistance, ensuring perfect sealing with the filter housing, no water leakage or impurity bypass under ultra-high flow and medium-pressure working conditions.

Application Fields

Large-Scale Industrial Ultra-High Flow Raw Water Pre-Filtration: Coarse pre-filtration of ultra-high flow raw water supply systems in petrochemical, electric power, steel, metallurgy, papermaking and food and beverage large-scale production, removing 40-micron and above particulates, sediment and rust in industrial raw water, protecting subsequent large-scale RO/NF membranes, ultrafiltration membranes and high-flow water pumps, and ensuring the stable operation of industrial process water systems.
Municipal Water Supply Ultra-High Flow Pre-Treatment: Coarse pre-filtration of municipal tap water supply main pipeline systems, water purification plant ultra-high flow raw water pre-treatment and municipal secondary water supply systems, intercepting fine-coarse impurities in surface water/groundwater, improving the inlet water quality of subsequent municipal water treatment equipment, and reducing the load of sand filtration and activated carbon filtration units.
Industrial Park Centralized Ultra-High Flow Water Treatment: Coarse pre-filtration of centralized water supply and purification systems in large industrial parks, high-tech zones and economic development zones, providing stable and high-quality inlet water for the park’s unified pure water/process water preparation system, and realizing centralized and energy-saving water treatment for enterprises in the park.
Large-Scale RO/NF Desalination System Pre-Filtration: Special precision coarse pre-filtration for large-scale industrial reverse osmosis and nanofiltration desalination systems (brackish water desalination, seawater desalination auxiliary and industrial wastewater desalination reuse), protecting high-precision and high-cost desalination membrane elements from fine-coarse impurity damage, and improving the overall operation efficiency and service life of the desalination system.
Heavy-Duty Commercial Centralized Ultra-High Flow Water Supply: Coarse pre-filtration of centralized water supply systems in large commercial plazas, super high-rise buildings, five-star hotel clusters and large-scale logistics parks, meeting the ultra-high flow water demand of dense populations and large commercial facilities, and protecting subsequent commercial water purification equipment and terminal water supply facilities.
Industrial Wastewater Reuse Ultra-High Flow Pre-Filtration: Coarse pre-filtration of ultra-high flow industrial wastewater recycling and treatment systems in printing and dyeing, electroplating, chemical and manufacturing industries, removing fine-coarse solid particulates and debris in wastewater, reducing the impurity load of subsequent advanced wastewater treatment equipment (MBR, UF, RO), and realizing the resource reuse of industrial water.
Large-Scale Aquaculture & Water Plant Ultra-High Flow Water Purification: Coarse pre-filtration of ultra-high flow water supply systems in large-scale industrial aquaculture bases (fish/shrimp/crab) and water production plants, removing 40-micron and above impurities in raw water, optimizing the water quality environment of aquaculture and ensuring the quality of packaged drinking water production.
Hazardous Chemical Industry Ultra-High Flow Water Treatment: Coarse pre-filtration of ultra-high flow industrial water supply systems in hazardous chemical production and processing industries, with corrosion-resistant SPP material and reinforced structure adapting to the special water quality environment of the chemical industry, protecting subsequent water treatment equipment and ensuring the safety of industrial water use.

Conclusion

The RCP400-40SPP is a high-performance, ultra-high flow, heavy-duty and cost-effective spun polypropylene filter cartridge specially developed for 400L/h ultra-high flow precision coarse pre-filtration scenarios including large-scale industrial, municipal water supply, industrial park centralized water treatment and heavy-duty commercial water purification. It integrates the core advantages of 40-micron high-efficiency precision coarse filtration, 400L/h stable ultra-high flux, ultra-low initial pressure drop, super high dirt-holding capacity, food-grade high-purity SPP material, heavy-duty reinforced structural strength and 24-hour continuous operation capability. Based on food-grade high-purity polypropylene raw materials and advanced multi-directional high-density spinning winding technology, combined with a heavy-duty reinforced stainless steel inner core and ultra-high flow optimized design, the product has excellent chemical stability, super high structural strength, anti-scouring performance and pressure resistance, and can maintain stable and efficient filtration performance under 24-hour continuous medium-pressure, ultra-high flow and intermittent operation modes, even in the face of ultra-high flow raw water with complex impurity components and high sediment content. Its ultra-low initial pressure drop design effectively reduces the power consumption of ultra-high flow water pumps and booster equipment, realizing energy-saving and low-cost operation of large-scale water treatment systems, which is especially suitable for municipal and industrial park scenarios with high requirements for energy saving and emission reduction and operation efficiency. The efficient professional backwashing performance and extra-long replacement cycle greatly lower the daily use, maintenance and replacement costs of ultra-high flow purification systems, while the adhesive-free and additive-free material properties ensure zero secondary pollution to water bodies and compliance with international drinking water safety, industrial material and environmental protection standards. With a standard ultra-high flow industrial interface and heavy-duty reinforced structural design, the RCP400-40SPP can be widely applied to precision coarse pre-filtration of various ultra-high flow water treatment systems, serving as the most reliable and core first-line coarse filtration barrier to provide durable and stable front-end protection for subsequent high-precision and high-cost industrial filtration equipment. It effectively reduces the heavy fine-coarse impurity load of subsequent high-precision equipment, optimizes the overall operation efficiency of large-scale systems, and reduces the failure rate, backwashing frequency, chemical cleaning times and maintenance cost of subsequent precision equipment by more than 50%. As a professional ultra-high flow coarse pre-filtration filter cartridge with excellent comprehensive performance, strong ultra-high flow adaptability, long service life and heavy-duty operation capability, the RCP400-40SPP is a reliable and cost-effective choice for large-scale industrial, municipal water supply, industrial park centralized water treatment and heavy-duty commercial water purification scenarios. It not only meets the practical needs of ultra-high flow water purification, system protection and continuous heavy-duty operation, but also conforms to the global environmental protection and low-carbon development trend, and can create significant practical, economic and environmental benefits for the safe, stable, energy-saving, eco-friendly and efficient operation of ultra-high flow water treatment and purification systems in various large-scale scenarios.

Related products

RCP400-20SPP: Higher precision version of the same series, 20 micron nominal filtration precision, 400L/h ultra-high flux, high-density spun SPP structure, suitable for large-scale industrial and municipal water treatment with stricter coarse filtration requirements.
RCP400-60SPP: Coarser filtration version of the same series, 60 micron nominal filtration precision, 420L/h higher flux, spun SPP large-pore structure, suitable for industrial raw water and municipal surface water with extremely high sediment content for ultra-high flow rough pre-filtration.
RCP400-40SPP-S: Sanitary grade enhanced version, food-grade ultra-smooth spun SPP membrane, no dead angle heavy-duty design, suitable for large-scale food and beverage processing, pharmaceutical production and municipal drinking water purification systems with high sanitary requirements.
RCP400 Series Ultra-High Flow Industrial Filter Housing: Special matching ultra-high flow filter housing for RCP400 series SPP cartridges, made of 304/316L stainless steel/FRP with pressure gauge, blowdown valve, backwashing interface and flow meter, suitable for large-scale industrial and municipal ultra-high flow water treatment scenarios.
RCP400-40SPP-M: Anti-scaling enhanced version, added with food-grade mineral anti-scaling additives on the spun SPP surface, suitable for ultra-high flow water treatment systems with high-hardness industrial raw water, groundwater and municipal tap water with high mineral content.
RCP500-40SPP: Super ultra-high flow version of the same precision, 500L/h super flux, double-layer reinforced spun SPP structure, suitable for super large-scale municipal water treatment, national key industrial park centralized water supply and large-scale water purification plant pre-treatment.
RCP400 Industrial High-Pressure Backwashing System Kit: Special professional high-pressure water/gas mixed backwashing kit for RCP400 series cartridges, including high-pressure booster pump, backwashing control valve, pipeline and nozzle, suitable for industrial on-site efficient backwashing and reuse, improving cartridge utilization rate by more than 65%.
RCP400-40SPP-C: Activated carbon composite spun SPP version, integrated high-density spun SPP coarse filtration and high-quality granular coconut shell activated carbon adsorption, removing both 40-micron and above impurities and residual chlorine/odors/organic matter in water, suitable for municipal tap water deep purification and heavy-duty commercial centralized drinking water supply.
RCP400 Series Industrial Water Quality Monitoring System: Special industrial-grade online water quality monitoring system for RCP400 series cartridges, including online turbidity meter, pressure drop transmitter, suspended solids analyzer and data display terminal, realizing real-time monitoring of system operation and automatic alarm for cartridge replacement.
RCP400-40SPP-F: Anti-fouling & Anti-bacterial enhanced version, added with food-grade silver ion anti-bacterial coating on the spun SPP surface, suitable for large-scale food processing, aquaculture, medical institution centralized water supply and municipal drinking water purification systems.
RCP300-40SPP: High-flow version of the same precision, 300L/h high flux, lightweight reinforced spun SPP structure, suitable for medium-large scale industrial and commercial ultra-high flow water treatment with slightly lower flow demand.
RCP400 Series Cartridge Installation Accessory Kit: Special heavy-duty installation accessory kit for RCP400 series ultra-high flow cartridges, including reinforced stainless steel connection flanges, high-temperature resistant silicone gaskets, fixing brackets and installation wrenches, improving the installation stability, sealing performance and convenience of the cartridge in ultra-high flow filter housings.
RCP400-40SPP-R: Corrosion-resistant version, made of high-purity corrosion-resistant spun polypropylene material, suitable for ultra-high flow water treatment systems in chemical, electroplating and printing and dyeing industries with corrosive water quality.

RCP400-40SPP 40 Micron Spun Polypropylene Filter Cartridge 400L/h Ultra-High Flow for Industrial Water Coarse Pre-Filtration