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Help CenterStainless Steel Johnson Filter for Water Filtration 0.5mm Slot 304 Material 1 Year Warranty
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Anping County Boli Hardware Wiremesh Products Factory, established in 1998, is a professional manufacturer specializing in filtration solutions. With an annual export value exceeding US$5 million, we serve markets across North America, South America, Europe, Africa, and Oceania. Our Stainless Steel Johnson Filter for Water Filtration with a 0.5mm slot and 304 material is engineered to deliver reliable, long-lasting performance in demanding water treatment applications. Backed by a 1-year warranty, this product offers excellent value for industrial, agricultural, and municipal water filtration systems.
The Johnson filter (also known as a wedge wire screen) is designed using precision-wound stainless steel wire profiles to create a continuous slot opening. This design provides superior mechanical strength, high flow rates, and resistance to clogging. The 0.5mm slot is ideal for fine filtration while maintaining structural integrity under high pressure.
Key Features & Technical Specifications
- Material: 304 Stainless Steel – excellent corrosion resistance and durability in water environments.
- Slot Size: 0.5mm (0.0197 inches) – precise filtration for suspended solids removal.
- Design: Continuous slot wedge wire construction – high open area for efficient flow.
- Strength: Robust welded structure withstands high pressure and backwashing.
- Customization: Available in various diameters, lengths, end connections (threaded, flanged, or plain), and slot orientations.
- Warranty: 1-year warranty against manufacturing defects.
| Parameter | Specification |
|---|---|
| Material Grade | 304 Stainless Steel |
| Slot Width | 0.5 mm (±0.05 mm) |
| Wire Profile | V-shaped / Wedge wire |
| Outer Diameter | Customizable (standard: 50mm–300mm) |
| Length | Up to 6 meters per section |
| End Connection | Threaded (NPT/BSP), Flanged, or Plain |
| Max Operating Pressure | Up to 10 bar (depending on diameter) |
| Operating Temperature | -20°C to 120°C |
Detailed Product Advantages
- High Flow Efficiency: The wedge wire design provides up to 60% open area, minimizing pressure drop and maximizing throughput.
- Self-Cleaning Capability: The V-shaped slot allows particles to be easily flushed during backwashing, reducing maintenance downtime.
- Corrosion Resistance: 304 stainless steel resists rust and chemical attack in fresh water, groundwater, and many industrial fluids.
- Long Service Life: Robust welded construction ensures the filter maintains its shape and slot integrity even under repeated cleaning cycles.
- Versatile Applications: Suitable for well water filtration, surface water intake, wastewater treatment, aquaculture, irrigation, and industrial process water.
- Customizable: We offer tailor-made dimensions, slot sizes, and end connections to meet specific project requirements.
Compared to traditional perforated screens or mesh filters, the Johnson filter offers superior clogging resistance and longer intervals between cleaning. The precision slot of 0.5mm effectively removes fine sand, silt, and small debris while allowing high volumes of water to pass through.
Trust & Quality Assurance
As a manufacturer with over 25 years of wire mesh expertise, Boli has exported to over 15 countries and regions, with an annual export value of US$5–10 million. Our factory is located in Hengshui, Hebei, a major wire mesh production hub in China. We ship from major ports including Tianjin, Qingdao, Shanghai, and Foshan to ensure timely delivery. Each filter undergoes strict quality inspection before shipment, and we provide a 1-year warranty for your peace of mind. Our experienced team offers technical support and after-sales service to help you select the right product for your water filtration system.
By choosing the Stainless Steel Johnson Filter 0.5mm Slot, you invest in a reliable, durable, and efficient filtration solution. Contact us today for a quote or to discuss your custom requirements.
Frequently Asked Questions
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Q: What is the difference between a Johnson filter and a conventional wire mesh screen?
A: Johnson filters use a wedge wire profile wound around support rods, creating a continuous slot. This design offers higher strength, better flow, and less clogging compared to woven mesh or perforated screens. -
Q: Can the slot size be customized for different filtration needs?
A: Yes, we offer slot sizes from 0.1mm to 6mm. The 0.5mm slot is standard for water filtration, but we can manufacture according to your required micron rating. -
Q: Is the 304 stainless steel suitable for saltwater or brackish water?
A: For saltwater applications, we recommend 316L stainless steel to resist chloride-induced corrosion. 304 is suitable for fresh water and most industrial fluids. -
Q: What end connections are available?
A: Standard options include threaded (NPT or BSP), flanged (ANSI, DIN, etc.), or plain ends for welding. Custom connections are available upon request. -
Q: How do I clean the filter?
A: The filter can be cleaned by backwashing with water or air. The V-shaped slot allows trapped particles to be released easily. For heavy fouling, chemical cleaning may be used. -
Q: What is the maximum length of a single filter section?
A: Typically up to 6 meters. For longer wells, multiple sections can be connected using couplings. -
Q: Do you provide samples for testing?
A: Yes, we can provide small samples (e.g., 300mm length) for evaluation. Please contact our sales team for details. -
Q: What is the lead time for custom orders?
A: Standard products ship within 15–20 days after order confirmation. Custom orders may require 25–30 days depending on specifications.
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