Size 3 Bag Filter Housing: High‑Capacity, Mid‑Scale Filtration

 When your process demands a balance of flow capacity and compact footprint—such as in light industrial, commercial water treatment, or mid‑scale manufacturing—a size 3 bag filter housing delivers optimal performance. Engineered to hold three standard 20″ or 30″ filter bags in parallel, this vessel supports flows from 75 GPM up to 200 GPM while maintaining low differential pressure and straightforward service. The size 3 bag filter housing is ideal for applications that outgrow single‑ or dual‑bag units but don’t yet require larger multi‑bag systems.

1. Core Features of the Size 3 Bag Filter Housing

  • Triple‑Bag Capacity
    A size 3 bag filter housing accommodates three parallel filter bags, tripling dirt‑holding capacity versus a single‑bag vessel and extending service intervals.

  • Durable Construction
    Available in 304 SS or polypropylene, the size 3 bag filter housing withstands pressures up to 150 PSI and temperatures up to 250 °F (stainless) or 140 °F (PP), ensuring reliable operation in diverse environments.

  • Efficient Flow Distribution
    An internal radial inlet diffuser plate ensures fluid divides evenly among all three bags, preventing channeling and maximizing media utilization in the size 3 bag filter housing.

  • Low ΔP Design
    Smooth internals and high‑open‑area support cages keep clean‑bag differential pressure below 3 PSI at rated flow, reducing pump energy and preserving system efficiency.

  • Tool‑Free Maintenance
    Quick‑release swing‑bolt or clamp closures allow the size 3 bag filter housing lid to open in seconds—no wrenches needed—so you can replace bags rapidly and safely.

2. Technical Specifications

SpecificationValue
Bag Count3 × 20″ or 3 × 30″ filter bags
Max Flow Rate75–200 GPM (depending on bag length & media)
Pressure Rating150 PSI @ 73 °F (304 SS); 80 PSI (PP)
Temperature Rating250 °F (SS); 140 °F (PP)
Materials304 SS (standard) or polypropylene (economical)
Closure TypesSwing‑bolt clamp or bayonet‑cap
Connections1½″–2″ ANSI flanged or FNPT
GasketsEPDM, Viton®, Silicone
Support Cage Open‑Area≥ 35%
Media CompatibilityBags or cartridges, 1 µm–200 µm

3. Common Applications

  1. Commercial Water Treatment
    A size 3 bag filter housing pre‑filters municipal water for cooling towers, protecting downstream membranes.

  2. Industrial Process Skids
    Compact skid systems leverage the size 3 bag filter housing to filter chemical process streams before reactors.

  3. Food & Beverage Clarification
    Breweries and juice plants use the size 3 bag filter housing to remove pulp and yeast ahead of polishing filters.

  4. Wastewater Reuse
    Tertiary treatment lines employ size 3 bag filter housing units to capture suspended solids before UV disinfection.

  5. Pilot‑Scale Production
    R&D facilities select the size 3 bag filter housing when higher flows are needed for scale‑up trials without the footprint of large vessels.

4. Selection Guide

  1. Flow Rate & Bag Length

    • 75–125 GPM: 3 × 20″ bags in the size 3 bag filter housing

    • 125–200 GPM: 3 × 30″ bags in the size 3 bag filter housing

  2. Material Choice

    • Polypropylene: Cost‑effective for neutral pH fluids

    • 304 SS: For higher temperatures, sanitation, or moderate chemicals

  3. Media & Micron Rating

    • Coarse Filtration: 50–200 µm polypropylene bags

    • Fine Polishing: 1–10 µm nylon or polyester bags

  4. Connection & Seals

    • ANSI Flange: Industrial piping systems

    • FNPT: Compact or retrofit installations

    • Gasket Materials: EPDM for water; Viton® for oils/solvents

5. Installation & Maintenance

  • Proper Mounting: Secure the size 3 bag filter housing to a robust support frame to prevent vibration.

  • Pressure Relief: Always vent through the top port before opening to depressurize the vessel.

  • Bag Change‑Out: Open clamps, lift the support cage, remove and replace three bags, reseat, and tighten—typically under 15 minutes.

  • Cleaning: Flush interior surfaces and cages during scheduled maintenance; inspect gaskets and basket integrity every 100 service cycles.

6. Total Cost of Ownership & ROI

  • Extended Media Runs: Triple bag capacity extends service intervals by up to 3× compared to single‑bag units.

  • Energy Efficiency: Low ΔP design reduces pump load and energy consumption.

  • Reduced Downtime: Tool‑free maintenance and rapid bag swaps minimize production interruptions.

  • Scalable Design: Multiple size 3 bag filter housing units can be run in parallel for redundancy or capacity increases.

7. Why Choose Our Size 3 Bag Filter Housing

  • Optimized Flow Manifold: Engineered diffuser ensures equal flow distribution across all three bags.

  • Robust Construction: 304 SS or PP shells provide longevity and corrosion resistance.

  • Global Support: Regional inventories and technical teams ensure fast delivery and expert assistance.

  • Quality Assurance: Manufactured under ISO 9001 with complete pressure testing and material traceability.

Call to Action

Scale up your filtration system efficiently with a size 3 bag filter housing. Contact our filtration specialists today to discuss your flow requirements and fluid chemistry. We’ll provide detailed drawings, media recommendations, and a competitive quote—helping you achieve reliable, high‑capacity filtration with minimal downtime.

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