NPT¼ External Thread Sintered Powder Filter Huahang Filter Manufacture

Description:

The NPT¼ External Thread Sintered Powder Filter Element is a compact, precision-engineered filtration component designed for inline filtration in gas and liquid systems. With its 15mm outer diameter and 65mm length, this miniature filter element delivers reliable particle retention in a space-constrained package, making it ideal for instrument protection, laboratory gas lines, and compact industrial systems.

The defining feature of this filter element is its ¼ inch NPT (National Pipe Thread) external thread connection—a standardized tapered pipe thread interface that provides a secure, leak-tight seal when screwed into compatible female NPT ports . The tapered thread design ensures a metal-to-metal seal that tightens as the connection is made, eliminating the need for additional gaskets or sealants. This direct threaded interface simplifies installation, reduces potential leak points, and allows for quick filter replacement without disturbing upstream or downstream piping.

Specifications:

Type	Sintered Powder Filter Element
Filter layer	304/316 stainless steel
Dimension	15x65 mm
Filtration rate	1~100 μm
Connection	NPT ¼ external thread
Origin	Henan,China
Package	Neutral carton package

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Flange Connection for Harsh Environments: The bolted flange mounting interface is specifically designed for high-pressure, high-temperature, and corrosive applications where seal integrity is paramount. Flanged interfaces typically use standard flange sizes and mounting hole patterns, and provide superior sealing strength compared to threaded or O-ring interfaces, making this element ideal for pipeline systems handling hazardous or high-value media.
High-Precision Powder Sintered Construction: Manufactured from high-purity stainless steel powder (304 or 316L) through precision powder metallurgy and high-temperature vacuum sintering, creating a rigid, homogeneous porous structure with a three-dimensional network of interconnected pores.
Wide Filtration Precision Range: Available filtration precision from 0.2μm to 200μm, enabling customized particle retention for applications ranging from ultra-fine pharmaceutical sterile filtration to coarse pipeline debris straining.
Exceptional High-Temperature Resistance: Operates reliably up to 600°C in normal use, with some configurations capable of withstanding up to 900°C for short-term gas filtration applications, making it suitable for high-temperature gas purification and process streams.
High Mechanical Strength and Good Plasticity: The sintered structure provides excellent mechanical strength and can be machined after sintering, allowing for custom modifications to meet specific installation requirements.
Excellent Corrosion Resistance: 304 or 316L stainless steel construction offers outstanding resistance to nitric acid, sulfuric acid, dilute hydrochloric acid (5%), acetic acid, liquid hydrogen, liquid nitrogen, and a wide range of aggressive chemical environments. 316L contains molybdenum for enhanced pitting resistance in chloride-rich environments.

Applications

The Flange Sintered Powder Filter Element 140x260 serves critical filtration roles across numerous industries where high precision and corrosion resistance are essential:

Petrochemical & Oil & Gas: Catalyst recovery and purification, high-temperature gas filtration in petroleum and chemical industries, refining process filtration, and separation in demanding oil and gas environments. The element is built for harsh industrial environments, perfect for fine chemicals, petrochemicals, gas purification, catalyst recovery, and other demanding applications.
Pharmaceutical Manufacturing: Sterile filtration, API purification, active pharmaceutical ingredient filtration, and high-purity water systems. FDA-approved materials are available, with components constructed from FDA-approved materials that meet GMP requirements and applicable EC Directives for Food Contact. The element features no particle shedding and does not contaminate fluid, complying with food hygiene and pharmaceutical GMP standards.
Chemical Processing: Fine chemical filtration, acid and alkali solution purification, organic solvent filtration, catalyst recovery, and high-temperature corrosive liquid treatment. The element is used in chemical plants, plating solutions, and chemical processing applications requiring high chemical resistance.
Hydraulic Systems: High-pressure hydraulic oil filtration, servo-valve protection, and lubricating oil purification in metallurgy (rolling mills, continuous casting), injection molding machines, and heavy equipment.

Manufacturer of Sintered Filter

Huahang Filter has been at the forefront of sintered filter technology for over 20 years. Unlike conventional filter manufacturers who outsource critical components, we design and produce our own sintered powder and sintered mesh elements entirely in‑house. Our specialized facility is equipped with advanced vacuum sintering furnaces, powder compaction presses, CNC machining centers, and comprehensive testing labs—allowing us to control every stage from raw metal powder to the finished flange element.

Why Choose Huahang Filter

20+ Years of Industry Expertise: We‘ve spent over two decades specializing in sintered metal filtration, including both powder sintering and mesh sintering technologies.
Engineering-Driven Problem Solving: We don’t just take orders—we solve problems. Our engineers work directly with clients to understand on-site challenges.
Built to Last, Priced for Reality: Through vertical integration and lean manufacturing, we deliver filters that meet premium quality standards at factory-direct prices.
Global Experience, Local Attention: Our filters support customers in over 120 countries, yet we maintain the responsiveness of a specialized manufacturer.
Certified Quality Assurance: Every powder sintered filter undergoes strict quality control to ensure stable filtration accuracy and long-term reliability.
Complete Customization Capability: From OD and length to end caps and connection threads, we manufacture to your exact specifications.

FAQ

Q1: What is the difference between 310S and 316L stainless steel for high-temperature filtration?

A: 310S stainless steel is specifically formulated for extreme high-temperature service with continuous operation up to 1150°C (2100°F) and peak temperatures up to 1200°C (2192°F). Its high chromium (25%) and nickel (20%) content provides superior oxidation resistance, carburization resistance, and thermal cycling stability . 316L stainless steel is optimized for corrosion resistance in chemical environments with excellent pitting resistance due to its molybdenum content, but its high-temperature capabilities are limited to approximately 700°C continuous service . For applications above 600°C with oxidizing or carburizing atmospheres, 310S is the superior choice..

Q2: What are the advantages of a flange connection over other connection types?

A: Flange connection offers several unique advantages:

Superior sealing strength under high pressure—bolted connections prevent leakage better than threaded or O-ring seals
High-temperature tolerance—no elastomeric seals to degrade
Corrosion resistance—the all-metal interface withstands aggressive media
Vibration resistance—bolted flanges remain secure under mechanical shock
Hazardous media safety—ideal for pipelines handling flammable or toxic fluids

Flanged interfaces typically use standard flange sizes and mounting hole patterns, such as ANSI or DIN standards.

Q3: What flange standards are available?

A: We offer multiple flange configurations to match your pipeline specifications:

ANSI/ASME: Class 150, 300, 600, 900, 1500
DIN: PN6, PN10, PN16, PN25, PN40, PN64
JIS: 5K, 10K, 20K, 30K
Custom: Designed to your specific bolt pattern, facing, and dimension requirements

Major connections include universal interface for filter elements (215, 220, 222, 226, etc.), flanged joint, and other special interfaces that can be customized.

Q4: What materials are available for the sintered powder?

A: Standard materials include 304 and 316L stainless steel. For aggressive environments, we offer special alloys including Titanium, Inconel, Hastelloy, and Monel upon request. 316L contains molybdenum for enhanced pitting and crevice corrosion resistance, making it the preferred choice for chloride-rich environments.

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NPT¼ External Thread Sintered Powder Filter Element 15x65

Description:

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Manufacturer of Sintered Filter

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Applications

Why Choose Huahang Filter

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