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Help CenterCotton Wound Filter Element 20 Micron 20 Inch With 316L Stainless Steel Core for High Pressure
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Since 1998, Anping County Boli Hardware Wiremesh Products Factory has been a trusted manufacturer of high-performance filtration solutions. Our Cotton Wound Filter Element 20 Micron 20 Inch with 316L Stainless Steel Core is engineered to deliver exceptional depth filtration under demanding high-pressure conditions. Designed for industries that require reliable particle removal and long service life, this filter element combines premium cotton winding with a corrosion-resistant 316L stainless steel core for maximum durability and performance.
Whether you need to filter water, chemicals, oils, or other process fluids, our 20-micron cotton wound element provides consistent filtration efficiency. The 20-inch length offers a large surface area, reducing the frequency of replacements and lowering operational costs. With a strong 316L stainless steel core, this filter can withstand high differential pressures without collapsing, ensuring uninterrupted operation in critical applications.
We understand that every filtration system is unique. That's why we offer customization options such as end cap configurations, gasket materials, and specific micron ratings to meet your exact requirements. Our factory-controlled production process guarantees consistent quality from batch to batch.
Key Features & Technical Specifications
| Parameter | Specification |
|---|---|
| Filtration Media | 100% Cotton fiber (continuous filament winding) |
| Micron Rating | 20 micron nominal (other ratings available: 1, 5, 10, 25, 50, 100 micron) |
| Length | 20 inch (508 mm) – also available in 10, 30, 40 inch |
| Core Material | 316L Stainless Steel (anti-corrosion, high strength) |
| Maximum Operating Pressure | Up to 30 bar (435 psi) – customizable for higher pressure |
| Maximum Operating Temperature | 120°C (248°F) – dependent on fluid compatibility |
| End Cap Options | Open, closed, double open, with/without gaskets |
| Gasket Material | Buna-N, EPDM, Silicone, Viton (optional) |
| Filtration Mechanism | Depth filtration – captures particles throughout the media thickness |
Product Advantages
- High Dirt Holding Capacity: The cotton winding structure creates a tortuous path that traps particles of varying sizes, extending filter life and reducing change-out frequency.
- Excellent Chemical Compatibility: Cotton is resistant to many water-based fluids, oils, and solvents. For aggressive chemicals, optional polypropylene or glass fiber media are available.
- 316L Stainless Steel Core: Provides superior corrosion resistance and mechanical strength, preventing collapse under sudden pressure spikes or high differential pressure.
- Consistent Micron Rating: Our precision winding process ensures uniform density across the entire length, delivering reliable 20 micron filtration performance.
- Versatile Applications: Ideal for reverse osmosis pre-filtration, cooling water, industrial process water, petroleum products, food & beverage processing, and more.
- Customizable End Caps: Choose from open, closed, or double open ends with various gasket materials to fit standard housings (DOE, SOE, with or without O-rings).
- Cost-Effective Solution: Lower initial cost compared to pleated filters, while still providing excellent depth filtration in many applications.
- Environmentally Friendly: Cotton is a natural, biodegradable material; the stainless steel core can be recycled.
Typical Applications
- Water treatment (municipal, industrial, RO pretreatment)
- Oil & gas filtration (hydraulic oils, lubricants, fuel)
- Chemical processing (acids, bases, solvents – verify compatibility)
- Food & beverage (filtering cooking oils, syrups, beverages)
- Pharmaceuticals (water for injection, process fluids)
- Cooling towers and boilers (sediment removal)
- Electroplating and metalworking (coolant and rinse water)
Why Choose Anping County Boli Hardware Wiremesh Products Factory?
With over 25 years of manufacturing experience (since 1998), we have exported filtration products worth US$5 million to US$10 million annually to markets across North America, South America, Europe, Asia, Africa, Oceania, and the Middle East. Our factory in Hengshui, Hebei, China, is equipped with advanced winding machines and strict quality control procedures. We offer customization for micron ratings, lengths, core materials, and end caps to match your specific requirements. Our team provides responsive technical support and fast delivery from ports including Tianjin, Qingdao, and Shanghai. Contact us today to request a sample or discuss your filtration needs – we are committed to providing high-quality, cost-effective solutions for your business.
Frequently Asked Questions
-
Q: What is the difference between a cotton wound filter and a pleated filter?
A: Cotton wound filters are depth filters that trap particles throughout the media thickness, offering high dirt holding capacity. Pleated filters are surface filters with larger surface area but less dirt holding. Wound filters are often preferred for high-viscosity fluids or when longer service life is needed at lower cost. -
Q: Can this filter element be used for high-temperature applications?
A: The standard cotton wound element can withstand up to 120°C (248°F). For higher temperatures, we recommend polypropylene or glass fiber media. Please contact us with your specific temperature requirements. -
Q: Is the 316L stainless steel core resistant to seawater?
A: Yes, 316L grade stainless steel offers excellent resistance to chlorides and seawater, making it suitable for marine and offshore filtration applications. -
Q: What end cap configurations are available?
A: We offer open, closed, double open, and flat ends. Gaskets can be added (Buna-N, EPDM, silicone, or Viton). Please specify your housing type so we can match the correct configuration. -
Q: Can I get a custom micron rating other than 20 micron?
A: Yes, we can produce elements from 1 micron up to 100 micron. Custom wind density and fiber materials are also available. Minimum order quantities may apply. -
Q: How do I know the filter will fit my housing?
A: Please provide the housing manufacturer, model, or dimensions (outer diameter, inner diameter, length, end cap type). Our standard 20-inch element has a 2.5-inch OD and 1-inch ID, but we can adjust to your specifications. -
Q: Are there any certifications for this product?
A: We have obtained other certifications as per customer requirements. Additional certifications (e.g., FDA, NSF, RoHS) can be arranged upon request with appropriate documentation. -
Q: What is the typical lead time and minimum order quantity?
A: For standard items, lead time is 7-15 days. Custom orders typically 15-25 days. No minimum order quantity for standard sizes; we welcome small trial orders.
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