RCP010-20EPP Water Treatment Filter Cartridge Technical Specification

Product Introduction

The RCP010-20EPP is a high-performance enhanced polypropylene (EPP) water filter cartridge engineered for low-flow, precision pre-filtration and fine filtration in small-scale water treatment scenarios. As a core product of the RCP010 series, it adopts food-grade modified EPP raw materials and advanced one-step melt-blown forming technology, optimized with a 20EPP enhanced core structure to achieve a perfect balance of 20-micron precision filtration, stable low-flow output and compact structural design. Free of adhesives, heavy metals, phthalates and other harmful leachables, the cartridge fully complies with FDA, NSF and international drinking water material safety standards, with no secondary pollution to water bodies. It is specially designed to intercept large suspended solids, 20-micron particulate impurities, colloidal aggregates and coarse macromolecular contaminants in low-flow water systems, providing reliable front-end protection for subsequent small-scale precision filtration equipment such as miniature RO membranes, ultrafiltration membranes and precision water purifiers, and ensuring the stable and efficient operation of small-flow water treatment and purification systems in laboratory, household and mini commercial scenarios.

Filtration Precision

The RCP010-20EPP features a graded dense filtration structure with a nominal filtration precision of 20 microns and an absolute filtration precision of 25 microns. Its optimized gradient pore design consists of a smooth surface interception layer, a lightweight transition impurity storage layer and a porous mechanical support layer, which can realize targeted capture of impurities with particle sizes above 20 microns in low-flow water flow. The dense surface layer effectively blocks coarse particulates and suspended solids that are easy to cause clogging of subsequent miniature precision membrane elements, while the inner transition layer stores intercepted impurities to avoid rapid blockage of the compact cartridge structure. This structural design ensures that the filtration precision remains stable and unattenuated throughout the entire service cycle, even under long-term continuous low-flow working conditions (≤10L/h) and low inlet pressure environments.

Flux

Under the standard operating conditions (25℃ ambient temperature, 0.1MPa inlet pressure, pure water medium), the pure water flux of the RCP010-20EPP is stably set at 10 L/h (liters per hour), the core low-flow design advantage of this product. Within the recommended operating pressure range of 0.05-0.15MPa, the flux variation rate is less than 5%, maintaining ultra-stable output for small-flow water systems; when the water temperature is in the range of 5-40℃ (the optimal working temperature for small-scale purification systems), the flux changes linearly with temperature and can be fully recovered when the temperature returns to the standard value. For actual raw water with turbidity ≤20 NTU (the recommended working turbidity for low-flow scenarios), the actual operating flux can still maintain more than 9 L/h, fully meeting the low-flow, stable water supply and purification requirements of laboratory, mini commercial and small-scale industrial auxiliary water treatment systems.

Salt Rejection Rate

As a low-flow enhanced EPP coarse filtration cartridge, the RCP010-20EPP is optimized for the physical interception of non-ionic salt contaminants, coarse colloidal salt particles and insoluble salt precipitates with particle sizes above 20 microns, with a salt rejection rate of ≥99.5% for insoluble salt particulates and salt-containing colloidal aggregates with particle sizes above 20 microns. For soluble inorganic salts, it serves as a professional pre-filtration component for small-scale desalination systems such as miniature RO and desktop NF membranes, which can effectively reduce the coarse particulate salt load in the feed water of subsequent small precision desalination membrane elements, avoid salt scaling and particulate fouling on the surface of miniature membrane cores (with small effective area), and thus improve the overall salt rejection efficiency and extend the service life of the entire small-scale desalination system. In addition, the cartridge can intercept more than 99% of coarse macromolecular organic salts in low-flow water systems, further optimizing the feed water quality for subsequent precision purification equipment.

Pressure Drop

Under the rated flux (10 L/h) and standard operating conditions, the initial pressure drop of the RCP010-20EPP is ≤0.005MPa, which is far lower than that of conventional PP filter cartridges of the same precision, realizing ultra-low energy consumption operation of low-flow water treatment systems without the need for additional booster pumps. With the progress of filtration work and the gradual accumulation of intercepted coarse impurities, the pressure drop of the cartridge rises slowly and stably; the recommended maximum allowable operating pressure drop is 0.05MPa. 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 small-scale systems, abnormal operation of subsequent precision equipment and even structural damage to the compact cartridge caused by pressure accumulation.

Molecular Weight Cutoff (MWCO)

The molecular weight cutoff of the RCP010-20EPP is precisely calibrated to 300,000 Daltons (Da), which is perfectly matched with its 20-micron coarse filtration precision and enhanced EPP material compact structure. This MWCO rating can effectively retain large macromolecular organic matter, coarse colloidal particles, macromolecular impurity aggregates and organic polymers with molecular weight higher than 300,000 Da in low-flow water systems, while ensuring the unimpeded passage of water molecules, small-molecular inorganic substances and trace beneficial ions. It is specially designed for the coarse pre-filtration requirements of small-flow, low-pressure water treatment systems, and can effectively reduce the large molecular contaminant load of subsequent miniature precision membrane elements, avoiding membrane clogging and improving the overall operation efficiency of small-scale purification systems.

Membrane Thickness

The RCP010-20EPP adopts a lightweight three-layer composite enhanced polypropylene membrane structure adapted to compact low-flow design, with a total effective membrane thickness of 12mm. The surface filtration layer (3mm) is a dense enhanced EPP membrane, responsible for precision interception of 20-25 micron coarse particulates, with excellent wear resistance and anti-clogging performance suitable for low-flow scouring; the middle transition support layer (6mm) is a lightweight gradient pore EPP membrane, undertaking secondary interception of impurities and providing stable structural support for the surface layer, which is the main dirt-holding area of the compact cartridge; the bottom base layer (3mm) is a high-density thin EPP membrane, enhancing the overall pressure resistance and extrusion resistance of the cartridge while ensuring the compactness of the product structure. This scientific lightweight three-layer thickness distribution balances high coarse filtration efficiency, moderate dirt-holding capacity and compact structural design, making the cartridge resistant to deformation and rupture under long-term low-pressure, low-flow working conditions, and suitable for installation in small-size filter housings.

Replacement Cycle

The recommended standard replacement cycle of the RCP010-20EPP is 6-8 months, formulated based on the standard low-flow working conditions: raw water turbidity ≤20 NTU, suspended solids content ≤30 mg/L, and 8-12 hours of daily operation (matching laboratory/mini commercial use habits). For low-flow water treatment systems with harsh water quality conditions (turbidity >20 NTU, suspended solids content >30 mg/L) such as small-scale groundwater extraction and tap water with high sediment content, the replacement cycle is shortened to 4-6 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 ≤5 NTU) such as laboratory pure water preparation and mini commercial drinking water purification, with regular simple backwashing (water flushing) and maintenance, the replacement cycle can be appropriately extended to 8-10 months, effectively reducing the use and maintenance costs of small-scale water treatment systems.

Features

Food-Grade Modified EPP Raw Material: Adopts food-grade enhanced polypropylene material with high chemical stability, acid and alkali resistant (pH 2-13), corrosion resistant to common drinking water additives, and adaptable to various low-flow water quality conditions of drinking water and laboratory water.
Compact Graded Filtration Structure: Lightweight gradient pore design adapted to low-flow scenarios, targeted interception of 20-micron coarse impurities, moderate dirt-holding capacity, slow pressure drop rise, and stable filtration performance under long-term low-flow operation.
Ultra-Low Initial Pressure Drop: Optimized compact pore size distribution and lightweight membrane thickness design result in an initial pressure drop of ≤0.005MPa, no need for booster pumps, realizing energy-saving and quiet operation of low-flow water systems.
Adhesive-Free Integrated Melt-Blown Forming: Advanced one-piece melt-blown welding technology, no seams, no filter bypass and no dead angles in the compact structure, avoiding unfiltered water leakage and ensuring the purity of filtered water.
High Pressure Resistance with Compact Design: 12mm lightweight composite EPP membrane structure can withstand a maximum operating pressure of 0.3MPa, no deformation or rupture under low-pressure impact, with excellent structural stability and long service life.
Easy Clean & Reusable: For slight blockage, the filtration performance can be quickly recovered by simple water backwashing (no need for gas-water mixing), reusable for multiple times, greatly reducing the replacement frequency and use cost.
Miniature Standard Interface Design: RCP010 series compact standard structural design, matching universal small-size filter housings (food-grade plastic/304 stainless steel), small installation space, no special installation tools required, quick disassembly and assembly, and convenient daily replacement and maintenance.
Drinking Water Grade Safety: Free of any harmful substances such as adhesives, heavy metals and plasticizers, fully compliant with FDA/NSF drinking water material standards, no chemical leaching in long-term contact with water, safe for direct drinking water pre-filtration.
Wide Temperature Adaptability: Can work stably in the water temperature range of 0-50℃, suitable for low-flow water treatment systems with slight temperature changes in laboratory, household and mini commercial scenarios.
Environmentally Friendly & Recyclable: The whole cartridge is made of homogeneous EPP material, no mixed materials, the spent cartridge can be recycled as PP plastic, meeting environmental protection recycling requirements and reducing environmental pollution.

Application Fields

Laboratory Water Purification Pre-Filtration: Pre-filtration of desktop laboratory water purifiers, ultra-pure water preparation systems and small-scale experimental water supply equipment, removing coarse particulates and suspended solids to protect subsequent precision water purification membranes and sensors.
Mini Commercial Drinking Water Systems: Pre-filtration of desktop water purifiers in small offices, convenience stores, coffee shops and milk tea shops, small commercial drinking fountains and direct drinking water equipment, meeting the low-flow drinking water purification needs of small business premises.
Small-Scale RO/NF Desalination Systems: Special pre-filtration for miniature reverse osmosis and nanofiltration desalination systems in small coastal workshops, island mini water supply stations and household desalination equipment, protecting miniature desalination membrane elements.
Household High-End Water Purification Pre-Filtration: Pre-filtration of household under-sink water purifiers, direct drinking water fountains and whole-house small-flow water purification systems, as the first coarse filtration link to intercept sediment and large particulates in tap water.
Small-Scale Industrial Auxiliary Water Treatment: Pre-filtration of low-flow auxiliary water supply systems in electronic component small workshops, precision instrument maintenance and small chemical experimental units, removing coarse impurities to protect precision equipment.
Aquarium & Small Aquaculture Water Purification: Filtration of large aquarium circulating water systems and small-scale indoor aquaculture water supply systems, removing residual bait, fish feces and suspended solids to optimize the water quality environment.
Medical Mini Water Treatment Equipment: Pre-filtration of desktop medical water purifiers, small dental clinic water supply equipment and laboratory medical experimental water preparation systems, meeting the low-flow water quality requirements of medical scenarios.
RV & Marine Low-Flow Water Purification: Pre-filtration of RV on-board water purifiers, yacht small-flow water supply systems and marine portable water purification equipment, adapting to the low-pressure, low-flow water supply characteristics of mobile scenarios.
Small-Scale Beverage Making Equipment: Pre-filtration of desktop coffee machines, tea makers, small juice machines and beverage dispensers in small catering premises, removing coarse impurities in water to improve the taste of beverages and protect equipment nozzles.

Conclusion

The RCP010-20EPP is a high-performance, high-cost-efficiency enhanced polypropylene filter cartridge specially developed for low-flow, small-scale water treatment and purification scenarios, which integrates the core advantages of 20-micron coarse precision filtration, 10L/h stable low-flow output, ultra-low energy consumption, compact structural design and drinking water grade safety. Based on food-grade modified EPP raw materials and advanced one-step melt-blown forming technology, the product has excellent chemical stability, structural compactness and pressure resistance, and can maintain stable and efficient filtration performance under long-term low-pressure, low-flow and intermittent operation conditions (matching laboratory/mini commercial use habits). Its ultra-low initial pressure drop design realizes energy-saving and quiet operation of low-flow water systems without additional booster pumps, and the easy water backwashing performance greatly lowers the daily use and maintenance costs of small-scale purification systems. Fully compliant with FDA/NSF international drinking water safety standards, with a miniature standard interface and compact size, the RCP010-20EPP can be widely applied to coarse pre-filtration and fine filtration of various low-flow water treatment systems, providing reliable and long-term front-end protection for subsequent miniature precision filtration equipment, optimizing the overall operation efficiency of small-scale systems, and reducing the failure rate and maintenance cost of subsequent precision equipment. As a professional low-flow water treatment filter cartridge with excellent comprehensive performance and compact design, the RCP010-20EPP is a reliable and cost-effective choice for laboratory, mini commercial, household and mobile low-flow water purification scenarios, and can create significant practical value for the safe, stable, energy-saving and efficient operation of small-scale water treatment and purification systems.

RCP010-20EPP Food Grade EPP Filter Cartridge 10L/h for Small-Scale RO/NF Water Purification Systems