Industrial-grade melt-blown and cartridge filters for reliable prefiltration in Reverse Osmosis systems. Extend RO membrane life and maintain contaminant-free water in industrial systems.
Reverse osmosis filtration is a pressure-driven separation process that removes dissolved salts, organic impurities, and suspended particles from water by forcing it through a semi-permeable membrane. It is widely used across industries to produce purified water for applications requiring consistent quality and reliability. At Graver Technologies, we offer prefiltration as well as post filteration for reverse osmosis systems that ensure longer and stable performance even in this demanding environments. These pre & post filters provide the reverse osmosis systems superior protection of the membranes by reducing fouling, scaling, and particulate load, ultimately extending system life and lowering operating costs of the RO systems. They support various industrial requirements, making them essential for sectors such as power generation, pharmaceuticals, food and beverage, and municipal water treatment.
Graver Technologies delivers a broad range of pre filtration for reverse osmosis systems. . Below are some of the main pre filters for reverse osmosis water filter systems available:
• Stratum® A Series Filter Cartridges (Absolute Rated Melt Blown Filters): These high-performance depth filters deliver exceptional 99.9% efficiency at stated micron ratings, featuring 4zone construction with graded pore structures for maximum dirt holding capacity. The thermally bonded polypropylene fibers provide superior contaminant retention even at elevated differential pressures, making them ideal for prolonging life of demanding reverse osmosis systems. These cartridges are available in micron ratings from 0.3 to 100 microns with lot traceability and comprehensive certifications including USP Class VI and FDA compliance.
• GLP™ Series Filter Housings (Multi-Cartridge Filter Series): Constructed from durable 316 stainless steel, these robust multi-cartridge housings accommodate various cartridge configurations including 10", 20", 30", and 40" lengths with DOE, 222, and 226 options. The universal design features V-band clamps or swing bolts for quick cartridge changeouts, while electrolyzed external surfaces and acid-washed internal finishes ensure corrosion resistance. These housings effectively handle high-volume applications with operating pressures up to 150 PSIG, providing reliable long-term performance for industrial systems.
• PMC™ Series Filter Cartridges (Economically Efficient Pleated Filter Cartridges): These cost-effective disposable pleated filters offer broad application versatility with micron ratings ranging from 0.2 to 50 μm, featuring high surface area polypropylene construction for enhanced system flow rates. The fixed pore structures resist contaminant unloading while maintaining economical filtration performance across extended service intervals. Multiple gasket and O-ring material options ensure compatibility with diverse process fluids, making them suitable for various reverse osmosis pre-treatment applications requiring reliable particulate removal.
• High Flow Series Filter Cartridges (Large Geometry Pleated Filters for High Flow): Featuring 6-inch diameter large geometry construction, these specialized filters handle significantly higher flow rates with fewer elements, reducing system footprint and change out frequency. Capable of processing up to 500 GPM in single 60" elements, they incorporate inside-out flow patterns for excellent dirt holding capacity and multi-layer pleated construction with optimized surface areas. The unique Quad Seal gasket design provides maximum seal integrity while outer cages prevent media extrusion problems commonly experienced with competitive offerings.
• ZTEC™: ZTEC™ Polyether sulfone (PES) membrane cartridges provide highly consistent performance for particle removal for increasingly critical RO systems. Manufactured in an ISO Class 7 cleanroom environment, these filters ensure the highest contamination control standards for high-purity water systems
Our comprehensive reverse osmosis industrial water treatment solutions incorporate advanced filtration technologies designed to maximize system efficiency and membrane protection:
• Pre-RO filters protect RO membranes from fouling: Advanced pre-filtration systems effectively remove suspended solids, organic matter, and other contaminants that could potentially foul or damage expensive reverse osmosis membranes, significantly extending membrane service life. These specialized filters capture particles ranging from coarse sediment to fine particulates, maintaining consistent water quality while reducing membrane cleaning frequency and operational costs.
• Trap filters downstream of sand, resin, and carbon beds prior to RO Membrane: Placing high-efficiency trap filters right after conventional treatment processes ensures full removal of media fines and particles before they reach sensitive RO membranes. These critical filtration stages prevent membrane fouling due to carbon particles, ion exchange resin beads, and sand bed carryover that could compromise system performance.
• Large geometry for high efficiency and flow in a compact footprint: Our innovative large-diameter filter cartridges deliver exceptional flow rates while maintaining superior filtration efficiency, allowing for compact system designs that reduce installation space requirements. These high-capacity filters minimize the number of elements needed for specific flow rates, simplifying system maintenance while reducing capital equipment costs.
• Multi-zone construction with graded pore structure: Advanced multi-layer filter media design features progressively tighter pore structures from outer to inner zones, maximizing dirt holding capacity while maintaining consistent filtration performance. This sophisticated construction prevents premature surface blinding and extends filter service life, reducing replacement frequency and operational interruptions.
• Temperature and chemical compatibility options: Comprehensive material selection including various gasket and O-ring options ensures compatibility with diverse process conditions and chemical environments. Temperature ratings up to 176°F (80°C) accommodate heated water applications while multiple elastomer choices provide chemical resistance for specialized industrial processes.
• Highly Retentive Filters: High retentive membrane filters prolong the life of RO membrane lowering cleaning cost and down time.
Graver's pre filters for reverse osmosis water systems serve critical roles across numerous industrial sectors requiring high-purity water for manufacturing and processing operations:
• Food and Beverage Industry: Our pre & post filters for reverse osmosis products ensure consistent water quality for beverage production, food processing, and cleaning operations where taste, odor, and contaminant removal are essential. RO systems effectively remove dissolved minerals, organic compounds, and microbiological contaminants while maintaining compliance with stringent food safety regulations and quality standards. Protecting them from premature following is critical with pre filters.
• Pharmaceutical and Biotechnology: High-purity water requirements for drug manufacturing, laboratory operations, and sterile processing demand reliable reverse osmosis membrane protection through advanced pre-treatment filtration. Our specialized filter cartridges ensure USP purified water standards while preventing costly membrane replacement and production downtime.
• Electronics and Semiconductor Manufacturing: Ultra-pure water production for electronics manufacturing requires exceptional contaminant removal efficiency to prevent product defects and process failures.
• Municipal Water Treatment: Large-scale water treatment facilities utilize our High Flow filters for potable water production, RO systems protection, wastewater treatment, and water recycling applications. These systems provide cost-effective solutions for meeting increasingly stringent water quality standards while minimizing environmental impact.
As a reliable and well-proven water treatment solution for municipal, industrial, food and beverage, and healthcare processes, Reverse Osmosis (RO) is a technology that effectively removes a large majority of contaminants from the incoming water. By using a high-pressure pump to increase the pressure on the “dirty” side of the RO membrane, water is forced across the semi-permeable RO membrane, leaving almost all of the particles and dissolved salts behind in the reject stream. The RO membranes must be maintained by regular cleaning cycles, to get at minimum two years of service, and likely four or more. Since membrane replacement costs can be very significant, prolonging the life of the membrane is critical and often directly related to its pretreatment. While 1- or 5-micron nominal melt-blown filters are often used in these processes, the economics often support the use of higher-performance filter cartridges. Better incoming fluid quality to the RO modules can significantly reduce the operational expense of the RO system (lower energy consumption), and increase the cycle time between cleanings, all resulting in reduced labor input and an improved lifespan of the modules.
Why is pre-filtration critical for RO membrane protection?
Pre-filtration removes, sediment, and organic matter that cause irreversible membrane fouling, extending membrane life significantly.
What micron rating should I use for RO pre-filtration?
Use 5-micron or finer filters for standard applications, with 1-micron absolute-rated cartridges recommended for critical RO membrane protection requirements.
When should I use depth filters vs. pleated filters for RO pre-treatment?
Use depth filters for high particle loads upstream and pleated filters for higher flow rates in final polishing stages.
What's the difference between standard and high-flow pre-filters for RO systems?
Standard filters handle lower flows with smaller surface areas, while high-flow filters process higher flows with reduced element counts. Contact us to explore the best options for your application
Why is post-filtration needed after RO membranes?
Post-filtration provides final polishing to remove particles or membrane fragments while protecting downstream equipment from potential upsets. ZTEC filters would be ideal for this application.
Are reverse osmosis systems suitable for drinking water production?
Yes, reverse osmosis systems are commonly used for producing drinking water by removing harmful contaminants and ensuring the water meets health and safety standards.
Can reverse osmosis systems handle brackish water?
Yes, reverse osmosis systems are highly effective in treating brackish water, efficiently removing salts and other impurities, making the water suitable for various uses. Depth pre filters should be replaced since it is difficult to remove particles out of a thick materials.
Can Graver provide custom pre and post filtration solutions for unique RO applications?
Yes, Graver can recomend filtration solutions and technical support for specialized industrial requirements.
You can find the right application or product using our Tool, or through our Chat Bot.