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Stainless Steel High Pressure Compressed Air Solid And Liquid Impurity Filter

The stainless steel high-pressure compressed air filter is a precision-engineered filtration device designed to remove solid particles and liquid impurities from compressed air systems operating at pressures up to 4.0 MPa. Constructed from high-grade 304 and 316L stainless steel, as well as specially coated carbon steel, the unit delivers reliable performance across demanding industrial environments where material compatibility and structural integrity are non-negotiable.

Engineered on aerodynamic principles, the filter minimizes pressure drop across the filter medium, preserving system efficiency without compromising filtration effectiveness. Available filter elements span a wide performance range — 25 μm, 5 μm, 1 μm, and 0.01 μm — with an activated carbon option for applications requiring odor control or hydrocarbon removal. This combination of material selection, pressure-rated construction, and filtration grade flexibility makes the unit suitable for general industrial gas treatment, precision pneumatic systems, and process gas conditioning.

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Product Description

Key Features of the Stainless Steel High-Pressure Compressed Air Filter

  • Pressure rating up to 4.0 MPa, accommodating high-pressure pneumatic and process gas lines
  • 304 and 316L stainless steel construction, with specially coated carbon steel options for diverse corrosion and chemical resistance requirements
  • Multiple filter element grades: 25 μm, 5 μm, 1 μm, and 0.01 μm, plus activated carbon for chemical vapor adsorption
  • Aerodynamically optimized flow path minimizes pressure differential across the filter medium
  • Precision manufacturing ensures consistent dimensional tolerances and reliable sealing under high-pressure cycling

Filtration Performance and Efficiency

  • Solid particle removal at four distinct micron ratings addresses both coarse pre-filtration and submicron sterile-grade applications
  • Liquid aerosol separation prevents downstream condensate carryover, protecting instrumentation and process equipment
  • Activated carbon element available for oil-vapor and odor removal, suitable for food, pharmaceutical, and precision electronics environments
  • Low differential pressure design reduces energy consumption and maintains stable downstream pressure

Material Selection and Compatibility

  • 316L stainless steel provides enhanced chloride and acid resistance, recommended for chemical processing and marine environments
  • 304 stainless steel offers a cost-effective solution for general industrial compressed air service
  • Coated carbon steel housings extend the range to less aggressive applications where stainless steel is not required
  • All wetted components are selected for compatibility with dry and oil-lubricated compressed air, nitrogen, and inert process gases

Installation and Maintenance Considerations

  • Standard pipeline connection configurations simplify integration into existing compressed air distribution systems
  • Modular element replacement allows filter grade changes without removing the housing from the pipeline
  • Automatic or manual drain options are available for accumulated liquid disposal, reducing maintenance intervals
  • Inspect and replace filter elements based on differential pressure rise rather than fixed time intervals for optimal element service life
  • Ensure all upstream shut-off valves are closed and pressure is relieved before servicing any filter components

Filtration Grade Comparison: Selecting the Right Filter Element

Filter Grade Particle Size Removed Typical Application Residual Oil Content
Coarse (25 μm) 25 μm and larger Pre-filtration, general air preparation Not rated for oil removal
Fine (5 μm) 5 μm and larger Pneumatic instrumentation, actuator protection Reduced carryover
High Efficiency (1 μm) 1 μm and larger Precision instrumentation, spray finishing Low
Submicron (0.01 μm) 0.01 μm and larger Sterile air, electronics, pharmaceutical Very low (near oil-free)
Activated Carbon Vapor / odor phase Food, beverage, medical, paint booths Hydrocarbon vapor adsorption

Application Suitability Across Industries

  • Industrial automation: protects pneumatic cylinders, valves, and positioners from particulate-induced wear
  • Chemical and petrochemical processing: 316L construction withstands mildly corrosive service conditions
  • Food and beverage production: activated carbon and 0.01 μm elements support clean-air and breathable-air-quality standards
  • Pharmaceutical and medical device manufacturing: achieves the air purity levels required for critical process environments
  • Electronics and semiconductor fabrication: submicron filtration prevents contamination of clean workspaces
  • Power generation and utilities: high-pressure rating accommodates instrument air systems on turbines and compressors

Frequently Asked Questions

Q1: What is the maximum operating pressure this filter supports?

The filter is rated for compressed air and inert gas service at pressures up to 4.0 MPa (approximately 580 psi). Operating above the rated pressure is not recommended and may compromise housing integrity and sealing performance. Always confirm that upstream pressure regulation is in place before installation.

Q2: How do I select the appropriate filter element grade for my application?

Selection depends on the downstream equipment sensitivity and air purity requirements. A 25 μm element is appropriate as a pre-filter or for general pneumatic tools. For instrumentation and control valves, 5 μm or 1 μm is recommended. Where oil-free or near-sterile air is required — such as in pharmaceutical filling or food contact applications — the 0.01 μm element should be used, optionally combined with an activated carbon stage for vapor removal.

Q3: What is the difference between 304 and 316L stainless steel in this context?

Both grades provide good general corrosion resistance, but 316L incorporates molybdenum, which significantly improves resistance to chloride-induced pitting and crevice corrosion. For standard industrial compressed air where the gas is dry or minimally oiled, 304 is typically sufficient. For environments with chlorine-bearing cleaning agents, coastal humidity, or chemically aggressive process gases, 316L is the preferred choice.

Q4: How often should the filter element be replaced?

Rather than following a fixed calendar schedule, element replacement should be triggered by an increase in differential pressure across the filter housing. A differential pressure gauge or indicator fitted at the inlet and outlet provides a direct measurement of element loading. When the differential pressure exceeds the manufacturer's specified limit — typically in the range of 0.07 to 0.1 MPa depending on element grade — the element should be replaced promptly to avoid excessive pressure loss or bypass.

Q5: Can this filter handle oil-lubricated compressor discharge air directly?

Yes. The filter is designed to remove both solid particles and liquid aerosols, including compressor oil carryover. For oil-laden air, a coalescing-type element (typically 1 μm or 0.01 μm grade) is recommended to capture submicron oil mist before it reaches downstream equipment. An automatic condensate drain fitted to the bowl ensures accumulated liquid is discharged continuously without manual intervention. If residual oil vapor must also be eliminated, an activated carbon polishing stage should follow the particulate filter.

Q6: Is the filter suitable for gases other than compressed air?

The stainless steel construction and elastomeric seals used in this filter are compatible with dry nitrogen, argon, carbon dioxide, and other non-flammable inert gases at the rated pressure. Compatibility with flammable, oxidizing, or strongly corrosive gases must be evaluated individually based on seal material and housing grade. Consult the product datasheet or contact the supplier before using the filter in service with non-air process gases.

Filter model Flow m³/M Interface h(W) C(diameter) Sewage outlet
BH-001* 1 1/2′′ 3/4′′ 1′′ 230mm 80mm 1/2
BH-002* 2 1/2′′ 3/4′′ 1′′ 230mm 80mm 1/2
BH-003* 3 1′′ 260mm 106mm 1/2
BH-005* 5 1-1/2′′ 405mm 115mm 1/2
BH-007* 7 1-1/2′′ 505mm 115mm 1/2
BH-010* 11 1-1/2′′ 620mm 115mm 1/2
BH-013* 13 2′′ 620mm 140mm 1/2

Construction Cases

Dalian Dahua Group Co., Ltd.

Dalian Dahua Group Co., Ltd.

A large-scale electronic new material company in Jiangsu (Fortune 500)

A large-scale electronic new material company in Jiangsu (Fortune 500)

Shenyang Engine Research Institute

Shenyang Engine Research Institute

A large optoelectronics factory in Jiangsu

A large optoelectronics factory in Jiangsu

Hainan Haikou Airport

Hainan Haikou Airport

Equipment of a military factory in Shanghai

Equipment of a military factory in Shanghai

PetroChina offshore drilling platform

PetroChina offshore drilling platform

A chemical company in Shandong

A chemical company in Shandong

A company in California, USA

A company in California, USA

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Demargo (Shanghai) Energy Saving Technology Co., Ltd.

About Us

Demargo (Shanghai) Energy Saving Technology Co., Ltd. actively participates in and promotes the development of the compressed air industry. It specializes in manufacturing and producing compressed air purification equipment. So far, it has passed a number of product patents, QS certification, and ISO9001 quality system certification. It has obtained national high-tech and specialized enterprises, providing users with high-quality products and the most complete pre-sales and after-sales services.

Demargo (Shanghai) Energy Saving Technology Co., Ltd. is China Wholesale Stainless Steel High Pressure Compressed Air Solid And Liquid Impurity Filter Manufacturers and Stainless Steel High Pressure Compressed Air Solid And Liquid Impurity Filter Suppliers. It's products include refrigerated dryers, adsorption dryers, combined dryers, compression heat regeneration adsorption dryers and filters, zero air consumption blast heat dryers, self-cleaning air filters, compressed air pre-cooling units, low-temperature and high-pressure nitrogen pre-cooling units, industrial chillers, oil-water separators, high-efficiency oil removers, aftercoolers and other specifications. According to user needs, it can provide compressed air purification equipment with various types and characteristics such as air cooling, water cooling, standard, fluorine-free, high temperature, instrumentation, single-chip microcomputer, programmable, industrial computer, frequency conversion control, high pressure, explosion-proof, etc. Product dew point range. -23℃~-70℃, processing capacity: 1~500Nm3/min, export oil content: 10PPM~0.003PPM. Export dust particle size: 3um~0.01 um.

Demargo (Shanghai) Energy Saving Technology Co., Ltd. has strong product research, design and development capabilities. On the basis of digesting and absorbing advanced technologies at home and abroad, combined with the actual working conditions in China, the successfully developed Demargo brand air purification equipment is the best suction filtration and post-processing purification equipment for various oil-free and oil-free air compressors. The products are widely used in power, shipbuilding, aerospace, electronics, metallurgy, machinery, automobile manufacturing, petroleum, chemical industry, textile, chemical fiber, light industry, papermaking, rubber, instrumentation, food, air separation, cigarettes, medicine, biology, daily chemicals, and other industries. They are sold well in more than 30 provinces and cities across the country and play an active role in key national projects. The products have been exported to Brazil, Australia, Iran, India, Sudan, Indonesia, Vietnam, Saudi Arabia and other Southeast Asia, the Middle East and Central Asia, and Africa.

The company takes "sincere dedication and pursuit of excellence" as its corporate spirit, and achieves the goal of developing the business through technology, quality and service with advanced product design, comprehensive quality assurance and a fast pre-sales and after-sales service network. We offer Stainless Steel High Pressure Compressed Air Solid And Liquid Impurity Filter for sale.

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  • High-Tech Enterprise Certificate
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