Strainer, cartridge, separator or coalescer
Filter type follows the contaminant and the protected equipment. A micron rating alone does not guarantee correct selection.
Natural gas filtration stages
- Guide rating
- 100–500 μm
- Contaminant
- Rust, scale, sand and construction debris
- Application
- Pressure reduction stations, upstream of regulator and meter
Five key parameters
The specification states the following for every stage.
What natural and fuel gas needs
- DN, PN, operating/design pressure and flow
- Dust, rust, sand, condensate, water and oil
- Rating, clean/final ΔP and temperature
- Housing material, hazardous area, drain and indicator
If gas filter ΔP rises quickly
- 01Probable cause
Liquid, an element that is too fine, a rust surge, high flow.
- 02Check first
Drain, element, actual flow, clean ΔP, flow pattern.
- 03Action
Remove the source and review the staged arrangement.
Frequently asked questions
Which filter is needed upstream of a gas burner?
A 10–50 μm cartridge is common, but the burner or valve manufacturer and the project set the requirement. Verify DN, PN, flow, ΔP, temperature, drainage and contamination.
What data is needed for preliminary selection?
At minimum: flow, temperature, pressure, contaminant composition and loading, target result, duty, allowable ΔP and a photo or drawing of the installation point.
Related pages
Strainers, cartridge filters, separators, coalescers and adsorbers for pressure-reduction and distribution stations and gas consumers — protecting regulators, meters, burners, turbines and compressors.
Open →Compressor filtration chain
3DFrom intake to point of use: air, oil, separator, dryer, coalescer and ISO 8573-1 purity classes.
Open →Gas turbine intake air
3DStatic and pulse-jet systems, V-cell, coalescing and hydrophobic elements for dust, salt and fog.
Open →An engineer will answer your question
Send your process data — we will review the specification, flag missing measurements and propose a process arrangement.