4GPJ6 Coalescing Filter Cartridge

Product introduction

4GPJ6 is a high-performance coalescing filter cartridge under the SPEEDAIRE brand, specifically engineered for efficient separation of liquid contaminants (oil mist, water droplets) and solid particles from compressed air systems. As a core purification component integrating coalescence and filtration functions, it is designed to aggregate micro liquid droplets into larger, easily separable droplets while capturing fine solid impurities, ensuring the delivery of clean, dry compressed air that meets industrial quality standards. This filter cartridge complies with ISO 8573 international filtration standards and is fully compatible with mainstream compressed air filter housings (such as Grainger part numbers 4GNV2 and 4GPC4), making it widely applicable in various industrial air compression systems. By purifying the compressed air, it effectively protects downstream equipment such as pneumatic tools, precision instruments, and control valves from corrosion, wear, and blockage, thereby extending equipment service life and improving the overall operational reliability of the production system.

Filtration accuracy

The 4GPJ6 coalescing filter cartridge features ultra-high precision purification performance, with afiltration rating of 0.01 micron for both liquid and solid contaminants. It achieves a filtration efficiency of 99.97% for 0.01μm solid particles, thoroughly intercepting even the finest particulate impurities in compressed air. For liquid contaminants such as oil mist and water droplets, it exhibits excellent coalescence separation capability, reducing the oil carryover in the treated air to a maximum of 0.008 ppm. This level of precision ensures that the filtered compressed air meets the strict purity requirements of high-end industrial applications, and its performance remains stable under rated flow conditions without efficiency attenuation caused by air pressure or flow rate fluctuations.

Filter media

4GPJ6 adopts high-quality microglass (borosilicate glass fiber) as the core filter media, which is processed through a special surface treatment to enhance its coalescence performance and particle interception capacity. The microglass media features a gradient pore structure, with larger pores on the outer layer for preliminary interception of large particles and smaller pores on the inner layer for fine filtration and coalescence, effectively improving dirt-holding capacity while maintaining low pressure loss. The filter media is supported by a robust internal structure to prevent deformation under high air flow impact, and the end caps and sealing components are made of oil-resistant and wear-resistant materials. This media selection not only ensures excellent compatibility with oil and water-based contaminants but also avoids secondary pollution of the compressed air, guaranteeing the purity of the treated medium.

Replacement cycle

The recommended replacement cycle of the 4GPJ6 coalescing filter cartridge is determined based on the contamination level of the raw compressed air, operating pressure, and specific application environment. Under normal industrial operating conditions (with moderate contaminant levels in compressed air), the basic service life is 6–12 months. For harsh working environments with high levels of oil mist and dust (such as heavy machinery workshops, petrochemical plants), the replacement cycle is recommended to be shortened to 6–8 months to ensure stable filtration performance. For clean operating environments with low contaminant content (such as electronics manufacturing workshops), the cycle can be appropriately extended to 10–12 months with regular weekly differential pressure monitoring. The optimal replacement timing can also be judged by the system differential pressure: when the pressure difference across the filter cartridge reaches 0.07 MPa, it should be replaced in a timely manner to prevent excessive pressure loss of the compressed air system and reduced purification efficiency due to media blockage. Additionally, it is recommended to replace the filter cartridge immediately if abnormal pressure fluctuations or reduced air quality are detected.

Features

1. Ultra-high precision purification: 0.01μm filtration rating with 99.97% efficiency and oil carryover as low as 0.008 ppm, ensuring the delivery of high-purity compressed air that meets ISO 8573 standards. 2. High-performance microglass media: Special surface-treated borosilicate glass fiber ensures excellent coalescence of liquid droplets and strong interception of solid particles, with good chemical stability and compatibility. 3. High flow capacity: Designed with a maximum flow rate of 712 cfm, capable of meeting the air supply requirements of large-scale compressed air systems while maintaining low initial pressure drop. 4. Wide compatibility: Fully compatible with mainstream filter housings (e.g., Grainger 4GNV2, 4GPC4) and suitable for various industrial compressed air systems, with strong adaptability. 5. Robust structural design: Reinforced media support structure and high-quality sealing components prevent media deformation and air bypass, ensuring reliable filtration performance. 6. Easy installation and maintenance: Adopts a standardized structural design that matches the installation interface of mainstream filter housings, requiring no special tools for disassembly and assembly, which saves maintenance time and labor costs. 7. Compliance with international standards: Manufactured in accordance with ISO 8573 filtration standards, with stable product quality and reliable performance, meeting the compliance requirements of global industrial applications.

Application areas

4GPJ6 coalescing filter cartridge is widely applied in various industrial fields that require high-purity compressed air, and its main application areas include: Manufacturing industry: Electronics manufacturing, automotive assembly, precision machinery processing, and aerospace component production, where clean compressed air is essential for product quality and equipment protection. Petrochemical industry: Compressed air systems in refineries and chemical plants, used to purify air containing oil mist and chemical dust, ensuring the safe operation of pneumatic control systems. Food and pharmaceutical industry: Food processing and pharmaceutical production workshops, where high-purity compressed air is required to avoid contamination of products and meet hygiene standards. Power generation industry: Compressed air systems in thermal power plants and hydropower plants, used to purify air for pneumatic actuators and control valves, ensuring the stable operation of power generation equipment. Commercial and industrial facilities: Central air conditioning systems, pneumatic tool systems in workshops, and air supply systems for laboratory equipment, providing clean air for various applications. Additionally, it is also suitable for compressed air purification in mining, textile, and printing industries.

Conclusions

4GPJ6 is a high-reliability coalescing filter cartridge that integrates ultra-high precision, high flow capacity, and wide compatibility. Through its advanced microglass filter media and optimized structural design, it effectively solves the problem of liquid and solid contaminant separation in compressed air systems. Its excellent purification performance not only ensures that the compressed air meets the strict purity requirements of various high-end industrial applications but also effectively protects downstream precision equipment from corrosion and wear, reducing equipment failure rates and maintenance costs. With the advantages of high flow rate, easy installation, and compliance with international standards, it is an ideal core component for industrial enterprises to optimize compressed air purification systems and improve production efficiency. Whether applied in manufacturing, petrochemical, or food and pharmaceutical industries, 4GPJ6 can maintain stable and reliable performance, demonstrating high practical application value and broad market prospects in the global industrial filtration market.

Related products

1. 4GNV2 Filter Housing: A dedicated filter housing compatible with 4GPJ6 coalescing filter cartridge, featuring robust structural design and easy maintenance, suitable for centralized purification of compressed air systems. 2. 4GPC4 Pre-Filter Cartridge: A coarse filtration cartridge with 1μm filtration accuracy, used for pre-filtration of raw compressed air with high contaminant content, intercepting large particles and liquid droplets to extend the service life of 4GPJ6. 3. High-Temperature Resistant Coalescing Filter Cartridge: An upgraded version of 4GPJ6, adopting high-temperature resistant microglass media and silicone rubber sealing components, suitable for high-temperature compressed air systems (working temperature up to 120℃). 4. High-Corrosion Resistant Coalescing Filter Cartridge: Equipped with PTFE-coated filter media and 316L stainless steel structural components, suitable for compressed air systems in high-corrosion environments such as chemical plants. 5. SPEEDAIRE EF Series Filter Cartridges: Other models in the same EF series as 4GPJ6, with varying filtration accuracies (0.1μm, 1μm) and flow rates, tailored for different compressed air purification requirements. 6. Compressed Air Dryer (Matching 4GPJ6): An adsorption dryer or refrigerated dryer that works in conjunction with 4GPJ6 to further reduce the moisture content in compressed air, achieving ultra-dry air supply for high-demand applications. 7. Reusable Stainless Steel Coalescing Filter Cartridge: Made of 316L stainless steel sintered mesh, washable and backflushable for repeated use, suitable for temporary compressed air purification systems and mobile air supply units.