Process Gas Filtration
Protecting critical processes and instrumentation across the chemical, petrochemical, and energy sectors with high-pressure stainless steel filtration systems rated to 400 bar.
The Challenge
Process gas streams in industrial environments carry a complex mixture of contaminants — particulate matter, liquid aerosols, condensed hydrocarbons, and corrosive compounds such as H₂S, CO₂, and mercaptans. Left unfiltered, these contaminants damage downstream equipment, compromise product purity, and create safety hazards.
In high-pressure applications — from natural gas production and transmission to chemical injection systems and CNG dispensing — standard filtration often fails. Housings must withstand extreme pressures (up to 400 bar), resist corrosive media, and maintain filtration efficiency over extended service intervals without introducing dead volume or flow restrictions.
Additionally, many process gas applications involve sour gas service (NACE MR0175 compliance), cryogenic conditions in LNG processing, or high-purity requirements for pharmaceutical and food-grade gases, each demanding specialised materials and certifications.
Our Solution
R+F FilterElements supplies a comprehensive range of 316L stainless steel process gas filter housings and elements specifically engineered for demanding industrial gas applications. Our housings are designed, manufactured, and tested to European pressure equipment standards, ensuring reliable performance under the most challenging conditions.
From compact inline filters for sampling and instrumentation to large-vessel process filters handling high flow rates, we offer multi-stage filtration solutions that combine coalescing, particulate separation, and adsorption in a single integrated system.
Pressure Ratings to 400 Bar
High-pressure 316L stainless steel housings for natural gas production, chemical injection, and high-pressure sampling applications.
Multi-Stage Filtration
Combine coalescing, particulate, and activated carbon adsorption stages in a single housing for complete contaminant removal.
Sour Gas Compatible
NACE MR0175/ISO 15156 compliant materials for H₂S service in upstream oil and gas and petrochemical processing.
Extended Element Life
Optimised element design with progressive depth media provides high dirt-holding capacity and long service intervals.
European Quality Standards
All housings manufactured to PED 2014/68/EU and ATEX-certified where required for hazardous area installation.
Complete Traceability
Full material certification and batch traceability for pharmaceutical, food-grade, and critical process applications.
Typical Process Gas Filtration System
A well-designed process gas filtration system addresses all contaminant types through a staged approach, ensuring downstream equipment and processes are fully protected.
- 1
Pre-filtration: Bulk liquid and large particulate removal (>5 µm) using RF-P series particulate elements, protecting downstream coalescing stages.
- 2
Coalescing stage: Liquid aerosol and fine particulate removal (0.01 µm) using RF-C series coalescing elements — achieves oil carryover below 0.01 mg/m³.
- 3
Adsorption stage: Hydrocarbon vapour and odour removal using RF-AC activated carbon cartridges in RF-H-134CC/146CC adsorption housings.
- 4
Final polishing: Ultra-high-efficiency (UX-grade, 99.9999%+) elements for critical downstream instrumentation or reactor feed protection.
- 5
Drainage and monitoring: Automatic condensate drains and differential pressure monitoring ensure optimal system performance and predictive maintenance scheduling.
Recommended Products
Explore the filtration products most commonly specified for this application.
Industries Served
Oil & Gas (Upstream)
Wellhead gas treatment, natural gas dehydration, sour gas handling, and high-pressure sampling up to 700 bar.
Oil & Gas (Downstream)
Fuel gas conditioning for turbines, compressor protection, and CNG/LNG dispensing systems.
Petrochemical
Reactor feed protection, catalyst bed pre-filtration, and process stream purification in cracking and reforming operations.
Chemical Processing
Corrosive gas filtration, chemical injection systems, and high-purity gas supply for synthesis processes.
Pharmaceutical
GMP-compliant process gas filtration with full material traceability and validation documentation.
Power Generation
Fuel gas filtration for gas turbines, biogas upgrading systems, and hydrogen production/electrolysis plants.
Fertiliser & Cement
Ammonia synthesis gas filtration, CO₂ recovery systems, and kiln gas treatment.
Environmental
Landfill gas treatment, biogas conditioning, and emission monitoring sample preparation.
Troubleshooting
Common Problems We Solve
Need Help Selecting the Right Filter?
Our filtration specialists can recommend the optimal housing, element grade, and system configuration for your specific process conditions.