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Help CenterJohnson Filter Type Scraper Element for Petrochemical Filtration, 304 Stainless Steel, 0.4mm Slot, 1500mm Length
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As a leading manufacturer from Anping County Boli Hardware Wiremesh Products Factory (established in 1998), we bring over two decades of expertise in producing high-performance Johnson filter type scraper elements for petrochemical filtration. Our 304 stainless steel scraper element, with a precise 0.4mm slot and 1500mm length, is engineered to deliver reliable solid-liquid separation in harsh industrial environments. With an annual export value of US$5-10 million and shipments to global markets including North America, Europe, and Southeast Asia, our products are trusted by clients worldwide for their durability and precision.
This scraper element is designed based on the well-known Johnson filter profile wire technology, featuring a continuous slot that ensures uniform filtration and easy backwashing. The 304 stainless steel construction provides excellent corrosion resistance against petrochemical fluids, while the scraper profile prevents clogging and extends service life. Below we detail the key features, technical specifications, and benefits that make this product a top choice for refineries, chemical plants, and oil processing facilities.
Key Features & Benefits
- High Precision Slotting: 0.4mm slot width (customizable from 0.1mm to 10mm) ensures accurate particle retention while maintaining high flow rates.
- Superior Material: 304 stainless steel offers excellent resistance to corrosion, oxidation, and high temperatures (up to 400°C in continuous service).
- Scraper Profile Design: The wedge wire section is shaped to allow efficient scraping of solids from the surface, reducing downtime for cleaning.
- Long Service Life: Robust construction with welded support rods and continuous V-shaped wire minimizes wear and deformation under pressure.
- Easy Maintenance: Smooth surface and self-cleaning slot geometry reduce fouling; element can be backwashed or chemically cleaned.
- Customizable Dimensions: Length, diameter, end connections (flanges, threads, etc.) can be tailored to your existing filter housing.
- Wide Operating Range: Suitable for pressures up to 10 bar (standard) and temperatures up to 200°C (higher with optional materials).
Technical Specifications (Typical)
| Parameter | Value |
|---|---|
| Material | 304 Stainless Steel (optional 316L, 904L, Duplex) |
| Slot Width | 0.4 mm (custom: 0.1 – 10 mm) |
| Overall Length | 1500 mm (custom lengths available) |
| Outer Diameter | Customizable (typical 25 – 200 mm) |
| Wire Profile | V-shaped (Johnson type) |
| Support Rods | 304 SS, welded at intervals |
| End Connections | Flange, thread, or plain end (optional) |
| Surface Finish | Pickled & passivated (available) |
Detailed Product Description
The Johnson filter type scraper element is a critical component in petrochemical filtration systems, designed to remove solid contaminants from process fluids such as crude oil, refined products, and chemical intermediates. Our element is manufactured using precision wedge wire wound around a series of longitudinal support rods, creating a continuous slot that is narrower on the inside and wider on the outside. This V-shaped slot prevents particles from becoming trapped inside the slot, making the element easy to clean and highly efficient.
Why choose our 304 stainless steel scraper element? The 304 grade offers an excellent balance of cost and performance for most petrochemical environments. It resists corrosion from organic acids, sulfur compounds, and many chemicals commonly found in refining processes. For more aggressive media, we offer 316L or duplex stainless steel options. The scraper design enhances the self-cleaning effect: during backwashing, the expanded flow path dislodges accumulated solids from the surface, reducing the need for manual intervention.
Installation & Maintenance: The element is designed to fit into standard filter housings. Custom end connections (e.g., 2-inch NPT threads, ANSI flanges) can be supplied to match your existing equipment. Routine maintenance includes periodic backwashing and inspection of the slot condition. Our elements are built to withstand repeated cleaning cycles without significant slot deformation.
Trust & Reliability
As a manufacturer with over 20 years of experience, Anping County Boli Hardware Wiremesh Products Factory has been producing wire mesh and filtration products since 1998. Our annual export value of US$5-10 million reflects strong global demand. We ship from Tianjin, Qingdao, Shanghai, and Foshan ports to markets across North America, South America, Europe, Africa, Asia, and Oceania. Our team ensures strict quality control at every stage: from raw material inspection to slot measurement, welding strength tests, and final packaging. We are committed to providing products that meet your exact filtration requirements.
Contact us today to discuss your specific requirements. Whether you need a standard 1500mm length or a custom dimension, we can deliver a solution that improves your filtration efficiency and reduces operating costs. With our competitive pricing, fast lead times, and reliable after-sales support, you can trust us as your long-term partner for petrochemical filtration components.
Frequently Asked Questions (FAQ)
-
Q: What is the difference between a Johnson filter element and a standard wedge wire screen?
A: A Johnson filter element is specifically designed for scraper applications, with a tapered slot profile that minimizes particle entrapment. It is often used in rotary drum filters, pressure filters, and other scraper-equipped systems. -
Q: Can this element be used for other industries besides petrochemical?
A: Yes, it is suitable for water treatment, food processing, mining, and pharmaceutical filtration where stainless steel and precise slotting are required. However, please confirm chemical compatibility with our technical team. -
Q: What is the maximum operating temperature and pressure?
A: Standard 304 element can withstand up to 200°C and 10 bar (higher with optional reinforcement). For extreme conditions, we recommend 316L or duplex material. -
Q: How do I clean the scraper element?
A: Backwashing with clean fluid or compressed air is effective. For stubborn deposits, chemical cleaning with mild acids or solvents (compatible with 304 SS) can be used. Avoid abrasive brushes that may damage the slot. -
Q: Can I get a sample before ordering in bulk?
A: Yes, we offer sample orders. The cost and lead time depend on the specifications. Please contact us for details. -
Q: How long is the delivery time for a standard 1500mm element?
A: Typically 15-20 working days after order confirmation. Custom sizes may take longer. We can expedite for urgent orders. -
Q: Do you provide certificates of material and quality?
A: Yes, we can provide a material test certificate (MTC) for 304 stainless steel upon request. Additional quality reports are available for an extra charge. -
Q: Is the slot width guaranteed to be 0.4mm ± tolerance?
A: Yes, our standard tolerance is ±0.05mm. Tighter tolerances are available upon request.
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