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Help CenterPTFE Needle Felt Triangular Filter Bag 260°C High Temp 0.3 Micron Filtration Efficiency 99.9%
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As a leading manufacturer since 1998, Anping County Boli Hardware Wiremesh Products Factory offers high-quality PTFE Needle Felt Triangular Filter Bags designed for extreme conditions. Our bags operate continuously at 260°C and achieve 0.3 micron filtration with 99.9% efficiency, making them ideal for demanding industrial applications such as cement, steel, and chemical plants. The unique triangular shape increases effective filtration area by up to 30% compared to traditional round bags, reducing pressure drop and extending service life.
Key Features & Technical Specifications
- High Temperature Resistance: PTFE needle felt withstands continuous 260°C (500°F) with peaks up to 280°C, suitable for hot gas filtration.
- Superior Filtration Efficiency: 0.3 micron particle capture at 99.9% efficiency, meeting stringent emission standards.
- Triangular Design: Increased surface area per unit volume allows higher air-to-cloth ratio and lower pressure drop.
- Chemical Resistance: PTFE material is inert to most acids, alkalis, and organic solvents, ensuring long life in corrosive environments.
- Low Moisture Absorption: Hydrophobic nature prevents clogging and reduces maintenance.
- Customizable Dimensions: Available in various lengths, diameters, and connection styles (clamp, snap ring, etc.) to fit your existing baghouse.
| Parameter | Value |
| Material | PTFE Needle Felt (100% PTFE) |
| Operating Temperature | 260°C (continuous), 280°C (peak) |
| Filtration Grade | 0.3 micron |
| Filtration Efficiency | ≥99.9% |
| Air Permeability | 8–15 m³/m²/min (at 200 Pa) |
| Weight | 800–1000 g/m² |
| Thickness | 2.0–2.5 mm |
| Surface Treatment | Smooth calendered or PTFE membrane (optional) |
Our triangular filter bags are engineered to deliver consistent performance in pulse-jet cleaning systems. The PTFE needle felt structure provides excellent dust cake release, reducing cleaning frequency and compressed air consumption. This translates into lower operating costs and longer bag life—typically 2–3 years in normal conditions.
Benefits for Your Application
- Enhanced Productivity: Higher air-to-cloth ratio allows you to increase throughput without expanding baghouse space.
- Compliance Made Easy: Achieve emission limits below 10 mg/Nm³ with 99.9% efficiency on sub-micron particles.
- Reduced Maintenance: The triangular shape minimizes bag wear and prevents bridging, while PTFE’s non-stick property eases cleaning.
- Versatile Installation: Our bags fit most existing baghouse designs—retrofit kits available for round-to-triangular conversion.
- Global Support: With annual exports of US$5–10 million to over 15 markets, we provide reliable logistics and after-sales service from ports like Tianjin, Qingdao, Shanghai, and Foshan.
Frequently Asked Questions
Q1: What is the maximum temperature this filter bag can withstand?
A: The PTFE needle felt bag is rated for continuous operation at 260°C (500°F) and can handle short-term peaks up to 280°C (536°F). For higher temperatures, we recommend a PTFE membrane or customized solution.
Q2: How does the triangular shape improve performance?
A: Compared to cylindrical bags, triangular bags offer 20–30% more filtration area per unit volume, which reduces gas velocity and pressure drop, and improves dust cake release. This design also allows more bags to be installed in the same housing.
Q3: Can the bag be used for acidic or alkaline gas streams?
A: Yes, PTFE is chemically inert and resistant to most acids, alkalis, and organic solvents. It is an excellent choice for flue gas desulfurization, incineration, and chemical processing.
Q4: What connection types are available?
A: We offer clamp, snap ring, cuff, and flange connections. Each can be customized to match your baghouse tube sheet. Please provide your baghouse specifications when ordering.
Q5: Is the bag size customizable?
A: Absolutely. We produce bags in any length, width, and triangular dimensions. Standard lengths range from 1.5m to 6m, but we can accommodate special requirements. Minimum order quantity may apply for custom sizes.
Q6: What is the expected service life of this filter bag?
A: Under normal operating conditions (temperature within spec, proper pulse cleaning, no mechanical damage), the bags typically last 2–3 years. Proper maintenance and avoiding over-temperature can extend life further.
Q7: How do you ensure the 99.9% filtration efficiency?
A: Our PTFE needle felt is manufactured using fine fibers and controlled needling density. The material is tested per ASTM D6830 to guarantee ≥99.9% efficiency on 0.3 μm particles. We provide test reports upon request.
Q8: Do you offer samples for testing?
A: Yes, we provide free sample pieces (e.g., 30×30 cm) for evaluation. Shipping cost is negotiable. For bulk orders, we can arrange a trial batch to validate performance in your system.
Why Choose Boli Hardware Wiremesh?
With over 26 years of manufacturing experience, we have supplied PTFE filter bags to clients across North America, Europe, Southeast Asia, Africa, and Oceania. Our annual export value of US$5–10 million reflects the trust of global partners. We are located in Hengshui, Hebei—the “Wire Mesh Capital of China”—giving us access to premium raw materials and skilled labor. We do not claim unverified certifications, but our products are rigorously tested for dimensional accuracy, thermal stability, and filtration performance. Contact us today for a quote or technical consultation. Let us help you optimize your filtration system with reliable, high-performing PTFE triangular filter bags.
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