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STK4 Series Top Entry Bag Filter Housing (Stainless Steel Single Bag Vessel)

The STK4 Series Top Entry Bag Filter Housing represents the highest standard in single-bag filtration design. Unlike traditional side-entry models, the fluid enters from the top, directly pressing the filter bag ring for a perfect 360° seal. This "Over-The-Top" design ensures zero bypass and maximizes filtration efficiency.

  • Design: Top-Inlet / Bottom-Outlet (Flow pattern optimizes bag usage).
  • Material: Premium SUS304 or SUS316L Stainless Steel.
  • Sealing: Patented pressure-seal ring design prevents fluid bypass.
  • Application: Ideal for high-precision filtration and valuable liquid recovery.

The STK4 Series Top Entry Bag Filter Housing represents the highest standard in single-bag filtration design. Unlike traditional side-entry models, the fluid enters from the top, directly pressing the filter bag ring for a perfect 360° seal. This "Over-The-Top" design ensures zero bypass and maximizes filtration efficiency.

  • Design: Top-Inlet / Bottom-Outlet (Flow pattern optimizes bag usage).
  • Material: Premium SUS304 or SUS316L Stainless Steel.
  • Sealing: Patented pressure-seal ring design prevents fluid bypass.
  • Application: Ideal for high-precision filtration and valuable liquid recovery.

Product Overview

The STK4 Top Entry Bag Filter Housing is engineered for applications where filtration quality cannot be compromised. The unique top-entry design allows the liquid to flow from the top of the vessel directly into the filter bag. This structure not only reduces turbulence but also utilizes the fluid pressure to reinforce the seal between the bag and the housing, effectively eliminating any risk of side leakage (bypass).

Key Features & Advantages

  • Zero Bypass Sealing: The top cover directly compresses the filter bag ring. As internal pressure increases, the seal becomes tighter, ensuring 100% of the fluid passes through the filter media.
  • Easy Maintenance & Cleaning: The smooth, electro-polished or bead-blasted interior surface prevents residue buildup. The simple top-opening mechanism allows for rapid bag changes without special tools.
  • Robust Construction: Manufactured with high-strength stainless steel (304/316L) to withstand high pressure and corrosive environments. Integrated adjustable legs provide stable installation.
  • High Flow Efficiency: The streamlined flow path reduces pressure drop (ΔP), saving energy and extending the lifespan of filter bags compared to side-entry models.

Structure & Design

The STK4 series features a cast head design (integrated top cap) which reduces welding points and enhances structural integrity. It supports standard filter bags (Size #1, #2) and is compatible with various bag ring types (steel ring or plastic collar).

Technical Specifications (STK4 Top Entry Series)

Standard specifications for STK4 top-entry models. Designed for precision filtration.

Model Bag Qty Diameter In/Outlet Flow Rate (m³/h) Thickness
STK4-SD10 1 Φ133 1" 6 m³/h 2.0mm
STK4-SD16 1 Φ133 1" 12 m³/h 2.0mm
STK4-SD25 1 Φ219 2" 25 m³/h 2.5mm
STK4-SD50 1 Φ219 2" 50 m³/h 2.5mm

* Note: Flow rates are theoretical values based on water treatment. Actual flow depends on fluid viscosity and micron rating.

Typical Applications

Due to its superior sealing capabilities, the STK4 Top Entry Filter is widely used in industries requiring high-purity filtration:

  • Automotive Industry: Filtration of electrophoretic paints, primers, and topcoats.
  • Chemical Processing: Filtering high-value solvents, acids, and fine chemicals.
  • Food & Beverage: Clarification of beer, wine, syrup, and edible oils (Food-grade configuration available).
  • Water Treatment: Precision pre-filtration for membrane systems and cooling towers.
  • Electronics: Filtration of ultra-pure water and cleaning solutions.

Product Overview

The STK4 Top Entry Bag Filter Housing is engineered for applications where filtration quality cannot be compromised. The unique top-entry design allows the liquid to flow from the top of the vessel directly into the filter bag. This structure not only reduces turbulence but also utilizes the fluid pressure to reinforce the seal between the bag and the housing, effectively eliminating any risk of side leakage (bypass).

Key Features & Advantages

  • Zero Bypass Sealing: The top cover directly compresses the filter bag ring. As internal pressure increases, the seal becomes tighter, ensuring 100% of the fluid passes through the filter media.
  • Easy Maintenance & Cleaning: The smooth, electro-polished or bead-blasted interior surface prevents residue buildup. The simple top-opening mechanism allows for rapid bag changes without special tools.
  • Robust Construction: Manufactured with high-strength stainless steel (304/316L) to withstand high pressure and corrosive environments. Integrated adjustable legs provide stable installation.
  • High Flow Efficiency: The streamlined flow path reduces pressure drop (ΔP), saving energy and extending the lifespan of filter bags compared to side-entry models.

Structure & Design

The STK4 series features a cast head design (integrated top cap) which reduces welding points and enhances structural integrity. It supports standard filter bags (Size #1, #2) and is compatible with various bag ring types (steel ring or plastic collar).

Technical Specifications (STK4 Top Entry Series)

Standard specifications for STK4 top-entry models. Designed for precision filtration.

Model Bag Qty Diameter In/Outlet Flow Rate (m³/h) Thickness
STK4-SD10 1 Φ133 1" 6 m³/h 2.0mm
STK4-SD16 1 Φ133 1" 12 m³/h 2.0mm
STK4-SD25 1 Φ219 2" 25 m³/h 2.5mm
STK4-SD50 1 Φ219 2" 50 m³/h 2.5mm

* Note: Flow rates are theoretical values based on water treatment. Actual flow depends on fluid viscosity and micron rating.

Typical Applications

Due to its superior sealing capabilities, the STK4 Top Entry Filter is widely used in industries requiring high-purity filtration:

  • Automotive Industry: Filtration of electrophoretic paints, primers, and topcoats.
  • Chemical Processing: Filtering high-value solvents, acids, and fine chemicals.
  • Food & Beverage: Clarification of beer, wine, syrup, and edible oils (Food-grade configuration available).
  • Water Treatment: Precision pre-filtration for membrane systems and cooling towers.
  • Electronics: Filtration of ultra-pure water and cleaning solutions.

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