Pleated Candle Filters
Pleated Candle Filter | High-Efficiency Filtration for Polymer & Chemical Processing
A Pleated Candle Filter is a precision-engineered filtration element designed to deliver high efficiency, large filtration area, and long service life in demanding industrial processes. With a pleated mesh structure wrapped around a rigid core, the filter maximizes flow rate while maintaining low pressure drop.
Widely used in polymer extrusion, petrochemical processing, hydraulic systems, food processing, and chemical production, pleated candle filters ensure continuous, stable, and contamination-free operation.
PFM SCREEN manufactures pleated candle filters using high-grade stainless steel wire mesh, sintered mesh, or customized alloy meshes to meet the extreme temperature, chemical, and mechanical requirements of different industries.
Advantages of Pleated Candle Filters
1. Increased Filtration Area
The pleated design significantly enlarges the surface area, allowing more contaminants to be captured without sacrificing flow rate.
2. High Dirt-Holding Capacity
Multiple pleats enable longer operating cycles and reduce the frequency of filter replacement.
3. Low Pressure Drop
The engineered mesh structure ensures stable flow through the entire filtration cycle.
4. Strong Structural Integrity
Reinforced with stainless steel perforated tubes, woven mesh layers, or sintered mesh media.
Resistant to collapse under high differential pressures.
5. Wide Operating Temperature Range
Suitable for extreme conditions in polymer melt filtration, petrochemical refining, and thermal oil systems.
6. Customizable Design
PFM SCREEN offers full customization:
- Mesh rating
- Filter length/diameter
- End cap style
- Material grade
- Pleat count & pleat depth
7. Reusable & Easy to Clean
Stainless steel pleated candle filters can be chemically cleaned, backflushed, or ultrasonically cleaned for repeated use.
Specification of Pleated Candle Filters
| Item | Description |
| Filter Media | Stainless steel woven mesh, stainless steel sintered mesh, perforated metal support |
| Micron Rating | 1–500 μm (custom options available) |
| Materials | SS304, SS316, SS316L, duplex steel, Inconel, Hastelloy, Monel, titanium |
| Pleat Type | Standard pleats / deep pleats / high-flow pleats |
| Diameter | 25–150 mm or customized |
| Length | 5–40 inches (or custom length) |
| End Cap Options | DOE, SOE, 222/226 with fin, flat top, threaded ends |
| Operating Temperature | Up to 650°C depending on alloy |
| Pressure Resistance | High differential pressure performance |
| Cleaning Method | Backflushing, ultrasonic cleaning, solvent washing |
Applications of Pleated Candle Filters
Polymer Production & Extrusion
- PET, PP, PE, PS, PA, PVC melt filtration
- Removes gels, char, and fine particles
Chemical & Petrochemical Industry
- Catalyst filtration
- Solvent purification
- Process fluid filtration
Hydraulic & Lubrication Systems
- Protects pumps, valves, and actuators
- Extends hydraulic oil service life
Food & Beverage Processing
- Edible oil filtration
- Sugar syrup purification
- Beverage clarity filtration
Pharmaceutical & Biotechnology
- Pre-filtration before membrane filters
- Powder and liquid filtration
Gas Filtration
- Natural gas, compressed air, and nitrogen systems
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