How to use a gas filter
Ekgas. Using a gas filter correctly is essential to protect downstream equipment such as gas regulators, solenoid valves, and burners, and to ensure stable and safe combustion. Here’s a clear, practical guide.
1. Understand the Purpose of a Gas Filter
A gas filter removes:
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Dust and rust particles from pipelines
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Welding slag and scale
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Oil or solid impurities in gas
This prevents:
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Regulator diaphragm damage
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Solenoid valve sticking
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Burner nozzle blockage and unstable flames
2. Correct Installation Steps
✅ Installation Position
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Install the gas filter upstream of:
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Gas pressure regulators
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Flow meters
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Typical order in a gas train:
Gas source → Gas filter → Regulator → Safety valves → Burner
Flow Direction
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Always follow the arrow on the filter body
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Wrong direction will reduce filtration efficiency or damage the filter element
Orientation
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Install with the filter cup facing downward
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This allows particles to collect and makes cleaning easier
Pipe Preparation
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Blow out or clean the pipeline before installation
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Avoid letting welding slag or debris enter the filter during mounting
3. Commissioning Before Use
Before putting the system into operation:
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Slowly open the gas supply valve
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Check all connections for gas leakage (use soap solution or gas detector)
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Ensure inlet and outlet pressures are within the filter’s rated limits
4. Daily Operation Tips
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Monitor pressure drop across the filter
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If downstream pressure decreases noticeably, the filter may be clogged
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Keep the filter dry and protected from mechanical impact
5. Cleaning and Maintenance
Cleaning Frequency
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New systems: inspect after the first 1–2 weeks
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Normal operation: clean every 3–6 months
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Dirty gas conditions: clean more frequently
🛠 Cleaning Steps
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Shut off the gas supply completely
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Release residual pressure
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Remove the filter cover or cup
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Take out the filter screen
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Clean with compressed air or a soft brush
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Reinstall and ensure seals are intact
Replace the filter element if it is damaged or heavily corroded.
6. Common Mistakes to Avoid
❌ Installing the filter backward
❌ Skipping regular cleaning
❌ Using a filter with incorrect pressure or flow rating
❌ Installing too close to high-temperature equipment
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