Pleated Filter Elements
Pleated Filter Elements
At Dantechs System and Filter Solutions, we offer pleated filter elements designed to remove solid contaminants from dry gas lines, regulation stations and the inlets of sensitive equipment. These filter cartridges operate on the principle of straight-through flow, where the gas flows from the outside inwards (Outside-to-Inside).
The filter media is pleated using specialised techniques, creating a layered structure that significantly increases the cartridge’s surface area compared to depth-type filters. This high surface area prevents the pressure drop (Delta P) from rising excessively, even at very high gas flow rates. In particular, it ensures the continuous and highly efficient capture of fine dust, rust, sand, coal dust and pipe scale in dry gas lines.
Filtration Precision and Performance Levels
Our pleated filter elements are available in four different performance segments, depending on the purity targets of your dry gas lines. Thanks to their pleated surface geometry, they offer up to 99.99 per cent absolute retention efficiency:
|
Performance Code |
Micron Rating and Efficiency Grade |
Application Purpose |
|
FF |
0.3 µm High Precision |
Filtration of ultra-fine black powder and protection of precision valves and meters. |
|
UF |
0.5µ Absolute Protection |
Gas turbine feed lines and high-pressure transmission networks. |
|
SF |
1µ (Standard Product) |
The most commonly used standard protection in gas distribution networks and RMS stations. |
|
BF |
5 µ / 10 µ Pre-filtration |
Initial commissioning of pipelines and reduction of coarse particle load. |
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Media Properties and Operating Temperature Limits
The choice of filter media is critical depending on the temperature and chemical composition of your gas:
- Pleated Polyester (E): Withstands temperatures up to 240°F (~115°C). It exhibits high mechanical strength in gas lines containing moisture and organic compounds.
- Pleated Glass Fibre (G): Delivers excellent results in high-temperature process gases around 300°F (~149°C) and in the reliable capture of micro-sized dry dust particles.
- Pleated Polypropylene (F): It provides 100 per cent chemical compatibility in aggressive chemical vapours or acidic/alkaline process gases up to a limit of 180°F (~82°C).
- Pleated Cellulose (C): Offers economical, high-surface-area and efficient particle retention performance in completely dry natural gas transmission lines at temperatures up to 200°F (~93°C).
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Business Values and Benefits
- Recommended Change-out Differential Pressure (Change-out PSID): To minimise energy consumption and pressure losses, it is recommended that the cartridges be replaced when the 12 – 15 PSID (0.8 – 1.0 bar) pressure differential.
- High Flow Capacity: Thanks to the expanded filter media area, it can handle 2 to 3 times the gas flow rate of traditional depth filters within the same housing diameter, whilst maintaining a significantly lower pressure