Description
Fluorine Lined Basket Filters (also known as PTFE/PFA lined bucket strainers) are heavy-duty chemical filtration units designed for high-flow pipelines carrying aggressive acids, alkalis, and corrosive liquids. Built with a spacious internal chamber and a seamless virgin fluoroplastic lining, these basket filters capture large volumes of solid particles and debris, protecting downstream pumps, flow meters, and control valves from severe damage.
Ideal for large-capacity chemical process protection, these lined bucket strainers work seamlessly alongside our industrial butterfly valves and connect securely into fluoroplastic piping loops using precision-forged industrial flanges.
Technical Specifications
| Technical Parameter | Specification Details |
|---|---|
| Nominal Diameter Range | DN25 to DN500 (1" to 20") |
| Nominal Pressure | PN10 / PN16 / Class 150 |
| Outer Shell Material | Ductile Iron (QT450-10), WCB (Carbon Steel), Stainless Steel (CF8 / 304 SS) |
| Lining Material Options | PTFE (Polytetrafluoroethylene) / PFA (Perfluoroalkoxy) / FEP (F46) |
| Filter Basket Material | PTFE Perforated Basket / ETFE Mesh / Hastelloy Mesh (20 Mesh to 120 Mesh) |
| Working Temperature | -20°C to 180°C (-4°F to 356°F) |
| Connection Standard | Flanged Ends (ASME B16.5 Class 150, HG/T 20592, EN 1092-1) |
| Quality Inspection | 100% Spark Testing (15kV-25kV Electrostatic Spark Test) & Hydrostatic Test |
Key Features & Large Dirt-Holding Performance
Compared to standard Y-type strainers, basket-type chemical filters offer distinct structural advantages for high-volume piping systems:
- Superior Dirt-Holding Capacity & Low Pressure Drop: The oversized internal basket volume allows continuous filtration with minimal flow resistance, significantly extending operational cycles between cleanings.
- Universal Chemical Inertness: Seamless PFA/PTFE lining applied directly to the internal casting body protects against all concentration levels of hydrochloric acid, sulfuric acid, nitric acid, and organic solvents.
- Top-Removal Easy Maintenance: Top bolted cover design enables quick vertical removal of the filter basket for fast cleaning and flushing without spilling process fluids into the surrounding area.
Target Applications & Industries
Our fluorine-lined basket filters are specified for high-capacity acid, alkali, and chemical waste management:
- Chemical Processing & Chlor-Alkali: High-volume acid handling, brine purification, and wet chlorine gas scrubbing.
- Pharmaceutical & Fine Chemicals: Solvent recovery systems, bulk acid transfer lines, and active pharmaceutical ingredient (API) processing.
- Steel Pickling & Environmental Protection: Spent pickling acid filtration, wastewater treatment, and corrosive slurry protection.
Frequently Asked Questions (FAQ)
Q1: When should I choose a fluorine-lined basket filter over a Y-type filter?
Choose a basket filter for larger pipe sizes (DN50 and above), higher flow rates, and applications with heavier debris loads where quick top-access cleaning and low pressure drop are essential.
Q2: How is the lining tested to guarantee zero leakage?
Every fluorine-lined basket filter body undergoes a mandatory 15kV–25kV high-voltage electrostatic spark test to verify that the fluoroplastic lining is free from micro-pinholes before hydrostatic testing.
Q3: Can Oucang Valve equip the filter with a bottom drain valve?
Yes. As a direct factory, Oucang Valve can integrate a fluorine-lined drain port or lined ball valve at the bottom of the body for fast online flushing.
About the Manufacturer: Oucang Valve
Oucang Valve is an ISO-certified direct manufacturer specializing in fluoroplastic-lined valves, lined chemical strainers, and forged pipe flanges. Operating our own casting foundry, PTFE/PFA lining facility, and non-destructive testing lab, we supply full material certification and custom OEM engineering for global projects.
- Core Capability: Precision PFA/PTFE lining injection, high-voltage spark testing, custom basket mesh fabrication, and rapid direct export.
- Quality Compliance: ASME B16.5, HG/T 21562, EN, DIN, and ISO standards.
- Factory Inquiry: Contact our technical sales team for direct factory quotations, chemical resistance charts, and 2D/3D CAD drawings.
