RCP030-40EPP Water Treatment Filter Cartridge Technical Specification

Product Introduction

The RCP030-40EPP is a high-performance enhanced polypropylene (EPP) water filter cartridge, exclusively engineered for low-medium flow coarse pre-filtration in small commercial, laboratory, light industrial and rural small-scale water treatment scenarios. As a key product of the RCP030 series, it adopts food-grade modified EPP raw materials and advanced gradient melt-blown forming technology, optimized with a 40EPP core structure to achieve an optimal balance of 40-micron coarse filtration precision, 30L/h stable low-medium flux, super dirt-holding capacity and compact structural design. Free of adhesives, heavy metals, plasticizers and any organic leachables, the cartridge fully complies with FDA, NSF and international drinking water material safety standards, ensuring zero secondary pollution to water bodies. It is specially designed to intercept large suspended solids, 40-micron coarse particulate impurities, colloidal aggregates, sediment and rust in low-medium flow water systems, serving as the first-line coarse filtration barrier to provide reliable front-end protection for subsequent precision filtration equipment such as mini RO membranes, ultrafiltration membranes and compact water purifiers. The product’s enhanced EPP structure and optimized pore distribution make it highly adaptable to raw water with high sediment content, perfectly matching the water quality characteristics of small-scale water treatment systems with non-standard raw water sources.

Filtration Precision

The RCP030-40EPP features a graded coarse filtration structure with a nominal filtration precision of 40 microns and an absolute filtration precision of 45 microns. Its multi-layer gradient pore design consists of a smooth surface interception layer, a high-capacity impurity storage layer and a high-strength mechanical support layer, which can realize targeted capture of large impurities with particle sizes above 40 microns in low-medium flow water flow. The surface EPP layer effectively blocks coarse particulates, sediment, rust and large colloidal aggregates that are easy to cause physical clogging of subsequent miniature precision membrane elements and pipeline valves, while the inner high-capacity storage layer stores a large amount of intercepted impurities to avoid rapid blockage of the cartridge. This structural design ensures that the filtration precision remains stable and unattenuated throughout the entire service cycle, even under long-term continuous low-medium flow working conditions (≤30L/h) and variable inlet pressure environments (0.08-0.2MPa).

Flux

Under the standard operating conditions (25℃ ambient temperature, 0.15MPa inlet pressure, pure water medium), the pure water flux of the RCP030-40EPP is stably set at 30 L/h (liters per hour), the core low-medium flow design advantage of this product. Within the recommended operating pressure range of 0.08-0.2MPa, the flux variation rate is less than 5%, maintaining ultra-stable output for small commercial and laboratory low-medium flow water systems; when the water temperature is in the range of 5-45℃ (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 ≤30 NTU (the recommended working turbidity for coarse pre-filtration scenarios), the actual operating flux can still maintain more than 28 L/h, fully meeting the low-medium flow, stable water supply and coarse pre-filtration requirements of small commercial, laboratory, light industrial and rural small-scale water treatment systems.

Salt Rejection Rate

As a low-medium flow enhanced polypropylene coarse filtration cartridge, the RCP030-40EPP is optimized for the physical interception of non-ionic salt contaminants, coarse colloidal salt particles, insoluble salt precipitates and salt-containing sediment aggregates with particle sizes above 40 microns, with a salt rejection rate of ≥99.8% 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 small-scale desalination systems such as mini RO and compact NF membranes, which can effectively reduce the coarse particulate salt load in the feed water of subsequent small precision desalination membrane elements (with limited effective area). This avoids salt scaling and particulate fouling on the membrane surface, thus improving the overall salt rejection efficiency and extending the service life of the entire small-scale desalination system by more than 40%. In addition, the cartridge can intercept more than 99.5% of coarse macromolecular organic salts in low-medium flow water systems, further optimizing the feed water quality for subsequent precision purification equipment.

Pressure Drop

Under the rated flux (30 L/h) and standard operating conditions, the initial pressure drop of the RCP030-40EPP is ≤0.006MPa, which is significantly lower than that of conventional PP filter cartridges of the same precision, realizing ultra-low energy consumption operation of low-medium 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 extremely slowly due to its super dirt-holding capacity and coarse filtration pore structure; the recommended maximum allowable operating pressure drop is 0.07MPa. 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 cartridge caused by pressure accumulation in the compact filter housing.

Molecular Weight Cutoff (MWCO)

The molecular weight cutoff of the RCP030-40EPP is precisely calibrated to 500,000 Daltons (Da), which is perfectly matched with its 40-micron coarse filtration precision and enhanced EPP three-dimensional gradient pore structure. This MWCO rating can effectively retain large macromolecular organic matter, coarse colloidal particles, macromolecular impurity aggregates, organic polymers and humic acid aggregates with molecular weight higher than 500,000 Da in low-medium 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 low-medium flow, low-pressure water treatment systems with high raw water impurity content, 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 by more than 30%.

Membrane Thickness

The RCP030-40EPP adopts a three-layer composite enhanced polypropylene membrane structure adapted to low-medium flow coarse filtration design, with a total effective membrane thickness of 20mm. The surface filtration layer (5mm) is a dense modified EPP membrane, responsible for precision interception of 40-45 micron coarse particulates, with excellent wear resistance and anti-scouring performance suitable for raw water with high sediment content; the middle transition support layer (10mm) is a high-capacity gradient pore EPP membrane, undertaking secondary interception of impurities and providing stable three-dimensional structural support for the surface layer, which is the main dirt-holding area of the cartridge with ultra-large impurity storage capacity; the bottom base layer (5mm) is a high-density enhanced EPP membrane, enhancing the overall pressure resistance, extrusion resistance and impact resistance of the cartridge while ensuring the structural stability of the melt-blown structure. This scientific three-layer thickness distribution balances high coarse filtration efficiency, super dirt-holding capacity and moderate structural compactness, making the cartridge resistant to deformation and rupture under long-term low-pressure, low-medium flow working conditions and suitable for installation in small and medium-size standard filter housings (food-grade plastic/304 stainless steel).

Replacement Cycle

The recommended standard replacement cycle of the RCP030-40EPP is 6-9 months, formulated based on the standard low-medium flow coarse pre-filtration working conditions: raw water turbidity ≤30 NTU, suspended solids content ≤40 mg/L, and 10-16 hours of daily operation (matching small commercial/laboratory/light industrial use habits). For low-medium flow water treatment systems with harsh water quality conditions (turbidity >30 NTU, suspended solids content >40 mg/L) such as rural surface water, groundwater with high sediment content and tap water with serious rust, 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 ≤8 NTU) such as laboratory pure water preparation and high-end small commercial drinking water purification, with regular simple backwashing (water flushing) and maintenance, the replacement cycle can be appropriately extended to 9-12 months, effectively reducing the use and maintenance costs of small-scale water treatment systems by more than 35%.

Features

Food-Grade Modified EPP Raw Material: Adopts food-grade high-density modified enhanced polypropylene material with excellent chemical stability, acid and alkali resistant (pH 1-14), corrosion resistant to common drinking water and light industrial water additives, and highly adaptable to raw water with high sediment, rust and colloid content.
Gradient Melt-Blown Coarse Filtration Structure: Advanced multi-layer gradient melt-blown technology forms a three-dimensional pore structure, realizing targeted interception of 40-micron coarse impurities, super dirt-holding capacity, extremely slow pressure drop rise, and stable filtration performance under long-term low-medium flow operation.
Ultra-Low Initial Pressure Drop: Optimized coarse filtration pore size distribution and membrane thickness design result in an initial pressure drop of ≤0.006MPa, no need for booster pumps, realizing energy-saving, quiet and low-cost operation of low-medium flow water systems.
Adhesive-Free Integrated Forming: Adopts advanced one-piece hot-melt welding melt-blown forming technology, no adhesives, no seams, no filter bypass and no dead angles, avoiding unfiltered water leakage and ensuring the purity of filtered water.
Super High Structural Stability: 20mm composite enhanced EPP membrane structure with high-strength core support, can withstand a maximum operating pressure of 0.5MPa, no deformation, no rupture and no delamination under low-pressure impact and water flow scouring, with excellent structural stability and long service life.
Easy Clean & Reusable: For slight to moderate 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 overall use cost.
Standard Compact Interface Design: RCP030 series standard compact structural design, matching universal small and medium-size filter housings (food-grade PP plastic/304 stainless steel), small installation space, no special installation tools required, quick disassembly and assembly, and convenient on-site replacement and maintenance.
Drinking Water Grade Safety & Environmental Protection: Free of any harmful substances such as adhesives, heavy metals, phthalates and plasticizers, fully compliant with FDA/NSF international drinking water material standards, no chemical leaching in long-term contact with water; the spent cartridge is made of homogeneous EPP material, recyclable as PP plastic, meeting environmental protection recycling requirements.
Wide Temperature Adaptability: Can work stably in the water temperature range of 0-60℃, suitable for low-medium flow water treatment systems with slight temperature changes in small commercial, laboratory, light industrial and rural small-scale scenarios.
Strong Anti-Fouling Performance: The modified EPP membrane surface has low surface tension, which can effectively prevent the adhesion of sediment, rust and colloids, further reducing the blockage rate and extending the actual service life.

Application Fields

Laboratory Water Purification Coarse Pre-Filtration: Coarse pre-filtration of medium-sized laboratory water purifiers, ultra-pure water preparation systems and experimental water supply equipment, removing large particulates, sediment and rust to protect subsequent precision water purification membranes, sensors and liquid chromatography equipment.
Small Commercial Drinking Water Systems: Coarse pre-filtration of under-sink water purifiers, small commercial drinking fountains and direct drinking water equipment in small offices, chain convenience stores, coffee shops, milk tea shops and small restaurants, serving as the first-line filtration barrier to improve the safety of drinking water.
Light Industrial Auxiliary Water Treatment: Coarse pre-filtration of low-medium flow auxiliary water supply systems in electronic component small workshops, precision instrument maintenance, small chemical experimental units and plastic product processing workshops, removing coarse impurities to protect precision production and testing equipment and pipeline valves.
Rural Centralized Small-Scale Water Supply: Coarse pre-filtration of rural centralized small-scale tap water supply systems, village-level water purification stations and household small-scale water supply equipment, removing sediment, suspended solids and colloids in surface water and groundwater, improving the basic water quality of rural drinking water.
Whole-House Medium-Flow Water Purification: Coarse pre-filtration of whole-house medium-flow water purification systems in villas, large apartments and small residential buildings, intercepting sediment, rust and large particulates in tap water to protect household water appliances (water heaters, water dispensers), terminal water purifiers and indoor water supply pipelines.
Small-Scale RO/NF Desalination Systems: Special coarse pre-filtration for mini reverse osmosis and nanofiltration desalination systems in small coastal workshops, island mini water supply stations and rural small-scale brackish water desalination equipment, protecting miniature desalination membrane elements and improving the overall operation efficiency of the desalination system.
Aquaculture & Aquarium Water Purification: Coarse filtration of medium-sized aquarium circulating water systems and small-scale indoor/outdoor aquaculture water supply systems, removing residual bait, fish feces, large suspended solids and algae aggregates to optimize the aquaculture water quality environment.
Medical Small-Scale Water Treatment: Coarse pre-filtration of desktop medical water purifiers, small dental clinic water supply equipment and community clinic disinfection water preparation systems, meeting the low-medium flow coarse filtration requirements of medical and health scenarios with high water quality safety standards.
Mobile Low-Medium Flow Water Purification: Coarse pre-filtration of RV on-board medium-flow water purifiers, yacht water supply systems, marine portable water purification equipment and construction site temporary water supply purifiers, adapting to the low-pressure, variable-flow and high-impurity raw water characteristics of mobile scenarios.
Small-Scale Beverage & Catering Equipment: Coarse pre-filtration of medium-sized coffee machines, tea makers, juice machines, beverage dispensers and ice makers in small catering and beverage premises, removing coarse impurities in water to improve the taste of beverages and protect equipment nozzles, pipelines and filters.

Conclusion

The RCP030-40EPP is a high-performance, cost-effective enhanced polypropylene filter cartridge specially developed for low-medium flow coarse pre-filtration scenarios including small commercial, laboratory, light industrial and rural small-scale water treatment. It integrates the core advantages of 40-micron high-efficiency coarse filtration, 30L/h stable low-medium flux, ultra-low energy consumption, super dirt-holding capacity, drinking water grade safety and strong adaptability to high-impurity raw water. Based on food-grade modified EPP raw materials and advanced gradient melt-blown forming technology, the product has excellent chemical stability, three-dimensional structural stability and pressure resistance, and can maintain stable and efficient filtration performance under long-term low-pressure, low-medium flow and intermittent/continuous operation modes, even in the face of raw water with high sediment, rust and colloid content. Its ultra-low initial pressure drop design realizes energy-saving and low-cost operation of low-medium flow water systems without additional booster pumps, and the easy water backwashing performance and long replacement cycle greatly lower the daily use and maintenance costs of small-scale purification systems. Fully compliant with FDA/NSF international drinking water safety standards, with a standard compact interface and moderate size, the RCP030-40EPP can be widely applied to coarse pre-filtration of various low-medium flow water treatment systems, serving as the first-line coarse filtration barrier to provide durable and reliable front-end protection for subsequent precision filtration equipment. It effectively reduces the impurity load of subsequent precision equipment, optimizes the overall operation efficiency of small-scale systems, and reduces the failure rate and maintenance cost of subsequent precision equipment by more than 40%. As a professional low-medium flow coarse pre-filtration filter cartridge with excellent comprehensive performance and strong environmental adaptability, the RCP030-40EPP is a reliable and cost-effective choice for small commercial, laboratory, light industrial and rural small-scale water purification scenarios, and can create significant practical and economic value for the safe, stable, energy-saving and efficient operation of low-medium flow water treatment and purification systems.

Related products

RCP030-20EPP: Higher precision version of the same series, 20 micron nominal filtration precision, 30L/h flux, suitable for laboratory ultra-pure water preparation and high-end small commercial drinking water pre-filtration with stricter precision requirements.
RCP030-50EPP: Coarser filtration version of the same series, 50 micron nominal filtration precision, 35L/h flux, suitable for raw water with extremely high sediment content and rural surface water rough pre-filtration.
RCP030-40EPP-S: Sanitary grade enhanced version, food-grade ultra-smooth EPP membrane, no dead angle compact design, suitable for medical laboratory, small food processing and beverage production low-medium flow water treatment.
RCP030 Series Filter Housing: Special matching filter housing for RCP030 series cartridges, including food-grade PP plastic and 304 stainless steel models, with pressure gauge interface, compact structure, easy to install, suitable for small commercial and laboratory scenarios.
RCP030-40EPP-M: Anti-scaling modified version, nano anti-scaling functional additives added in the membrane layer, suitable for low-medium flow water treatment systems with high-hardness tap water, groundwater and rural surface water with high mineral content.
RCP050-40EPP: Medium-flow version of the same precision, 50L/h flux, RCP050 series interface, suitable for medium-sized offices, chain stores and light industrial workshops with higher water demand.
RCP030 Backwashing Accessory Kit: Special simple backwashing kit for RCP030 series cartridges, including high-pressure flushing nozzle and connecting pipe, convenient for on-site manual water backwashing and reuse, improving cartridge utilization rate by more than 50%.
RCP030-40EPP-C: Activated carbon composite version, integrated EPP coarse filtration and high-quality coconut shell activated carbon adsorption, removing both coarse particulates and residual chlorine/odors/organic matter in water, suitable for small commercial and household drinking water purification.
RCP030 Series Water Quality Test Kit: Special small test kit for RCP030 series cartridges, including turbidity test paper, suspended solids test kit and pressure drop detector, convenient for on-site detection of filtered water quality and judgment of cartridge replacement time.
RCP030-40EPP-F: Anti-fouling & Anti-bacterial version, added with silver ion anti-bacterial and anti-fouling coating on the membrane surface, suitable for small-scale aquaculture, aquarium, medical laboratory and catering industry low-medium flow water purification systems.
RCP030-40EPP-P: Pleated enhanced version, combined EPP melt-blown and pleated filtration structure, ultra-high dirt-holding capacity, suitable for low-medium flow water treatment systems with poor and highly variable raw water quality.
RCP030 Series Cartridge Bracket: Special plastic bracket for RCP030 series cartridges, suitable for vertical and horizontal installation of filter housings, improving the installation stability of the cartridge in small-scale water treatment systems.

RCP030-40EPP 40 Micron Enhanced Polypropylene Filter Cartridge 30L/h Low-Medium Flow for Water Treatment Pre-Filtration