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The Johnson Filter Cartridge is a precision filtration component constructed with V-shaped wedge wire and longitudinal support rods, connected via high-strength resistance welding—this welding process ensures weld joint tensile strength up to 500 MPa, eliminating leakage risks even in high-pressure fluid systems. Its integrated metal structure delivers exceptional durability for industrial fluid purification, distinguishing it from disposable PP cotton cartridges by enabling repeated use and regeneration without compromising filtration accuracy. Unlike PP cartridges that degrade after 2-3 backwashes, this metal cartridge maintains consistent performance for 12+ backwash cycles. Widely adopted in water treatment, petrochemical, and food processing, it maintains stable operation under harsh conditions such as high turbidity (up to 500 NTU) and chemical exposure (pH 1-13 for 316L variants).
High Structural Strength: All-metal construction (304/316L stainless steel optional) withstands 150 psi maximum pressure and 125°F (52°C) operating temperature, resisting deformation in high-flow environments like refinery crude oil pipelines (flow rates up to 200 L/min). The 316L variant further enhances chloride resistance, making it suitable for coastal petrochemical plants with high humidity.
Precision Filtration: Customizable gap width from 0.02mm to 1.0mm with ±0.005mm error, ensuring consistent particle interception. For example, the 0.02mm gap option is ideal for electronic industry ultra-pure water filtration (removing 99.9% of 0.05μm+ particles), while the 1.0mm gap suits industrial wastewater pre-filtration to remove large sediments.
Efficient Regeneration: Outer-narrow-inner-wide gap design facilitates backwashing—high-pressure water (3-5 bar) or compressed air (6-8 bar) can flush impurities without disassembly, extending service life by 300% vs. standard cartridges. In a municipal water plant case, this design reduced cartridge replacement frequency from 3 months to 9 months.
High Flow Capacity: Open area exceeds 30% of surface area, minimizing pressure drop to less than 105 kPa during operation. This ensures stable water supply in large-scale systems, such as a 50,000 m³/day water treatment plant that maintains flow rates without pressure fluctuations.
Water Treatment: Pre-filtration for municipal water plants, removing sediment and suspended solids (SS > 50 mg/L) to protect RO membranes—field data shows RO membrane lifespan extends by 2-3 years after installation. Also applicable to industrial circulating water systems, reducing scaling in heat exchangers.
Petrochemical Industry: Filtration of crude oil and lubricants in refineries, removing metal wear particles (5-20μm) and carbon deposits to reduce equipment wear. In a refinery’s lubricating oil system, it reduced pump maintenance frequency by 40%.
Food & Beverage: Diatomaceous earth pre-coating support in beer and juice clarification, complying with FDA 21 CFR Part 177 standards. It ensures uniform diatomaceous earth distribution, avoiding filter channeling and improving clarification efficiency by 15%.
Q: How often should the cartridge be replaced?
A: Replace when differential pressure reaches 15 psi (105 kPa) or after 12 months of service, whichever comes first. For high-contaminant environments (e.g., mining wastewater), check differential pressure monthly to avoid overloading.
Q: Which material is suitable for corrosive media?
A: 316L stainless steel or Hastelloy variants resist acids and alkalis in chemical processing. For strong acids (e.g., 20% sulfuric acid), Hastelloy C276 is recommended, with a corrosion rate < 0.1 mm/year.
Q: Can it be automated for backwashing?
A: Yes, it integrates with differential pressure sensors for fully automatic cleaning cycles. The system can be programmed to trigger backwashing when pressure difference exceeds 8 psi, and cleaning duration (1-3 minutes) is adjustable based on impurity load.
Q: Does it require special installation tools?
A: No, it is compatible with standard 2-inch and 4-inch filter housing interfaces, using common wrench tools for installation. The cartridge’s sealed O-ring (NBR or EPDM material) ensures leak-proof connection without additional sealing agents.
The Johnson Filter Cartridge is a precision filtration component constructed with V-shaped wedge wire and longitudinal support rods, connected via high-strength resistance welding—this welding process ensures weld joint tensile strength up to 500 MPa, eliminating leakage risks even in high-pressure fluid systems. Its integrated metal structure delivers exceptional durability for industrial fluid purification, distinguishing it from disposable PP cotton cartridges by enabling repeated use and regeneration without compromising filtration accuracy. Unlike PP cartridges that degrade after 2-3 backwashes, this metal cartridge maintains consistent performance for 12+ backwash cycles. Widely adopted in water treatment, petrochemical, and food processing, it maintains stable operation under harsh conditions such as high turbidity (up to 500 NTU) and chemical exposure (pH 1-13 for 316L variants).
High Structural Strength: All-metal construction (304/316L stainless steel optional) withstands 150 psi maximum pressure and 125°F (52°C) operating temperature, resisting deformation in high-flow environments like refinery crude oil pipelines (flow rates up to 200 L/min). The 316L variant further enhances chloride resistance, making it suitable for coastal petrochemical plants with high humidity.
Precision Filtration: Customizable gap width from 0.02mm to 1.0mm with ±0.005mm error, ensuring consistent particle interception. For example, the 0.02mm gap option is ideal for electronic industry ultra-pure water filtration (removing 99.9% of 0.05μm+ particles), while the 1.0mm gap suits industrial wastewater pre-filtration to remove large sediments.
Efficient Regeneration: Outer-narrow-inner-wide gap design facilitates backwashing—high-pressure water (3-5 bar) or compressed air (6-8 bar) can flush impurities without disassembly, extending service life by 300% vs. standard cartridges. In a municipal water plant case, this design reduced cartridge replacement frequency from 3 months to 9 months.
High Flow Capacity: Open area exceeds 30% of surface area, minimizing pressure drop to less than 105 kPa during operation. This ensures stable water supply in large-scale systems, such as a 50,000 m³/day water treatment plant that maintains flow rates without pressure fluctuations.
Water Treatment: Pre-filtration for municipal water plants, removing sediment and suspended solids (SS > 50 mg/L) to protect RO membranes—field data shows RO membrane lifespan extends by 2-3 years after installation. Also applicable to industrial circulating water systems, reducing scaling in heat exchangers.
Petrochemical Industry: Filtration of crude oil and lubricants in refineries, removing metal wear particles (5-20μm) and carbon deposits to reduce equipment wear. In a refinery’s lubricating oil system, it reduced pump maintenance frequency by 40%.
Food & Beverage: Diatomaceous earth pre-coating support in beer and juice clarification, complying with FDA 21 CFR Part 177 standards. It ensures uniform diatomaceous earth distribution, avoiding filter channeling and improving clarification efficiency by 15%.
Q: How often should the cartridge be replaced?
A: Replace when differential pressure reaches 15 psi (105 kPa) or after 12 months of service, whichever comes first. For high-contaminant environments (e.g., mining wastewater), check differential pressure monthly to avoid overloading.
Q: Which material is suitable for corrosive media?
A: 316L stainless steel or Hastelloy variants resist acids and alkalis in chemical processing. For strong acids (e.g., 20% sulfuric acid), Hastelloy C276 is recommended, with a corrosion rate < 0.1 mm/year.
Q: Can it be automated for backwashing?
A: Yes, it integrates with differential pressure sensors for fully automatic cleaning cycles. The system can be programmed to trigger backwashing when pressure difference exceeds 8 psi, and cleaning duration (1-3 minutes) is adjustable based on impurity load.
Q: Does it require special installation tools?
A: No, it is compatible with standard 2-inch and 4-inch filter housing interfaces, using common wrench tools for installation. The cartridge’s sealed O-ring (NBR or EPDM material) ensures leak-proof connection without additional sealing agents.
