20″ Big Blue Water Filter Housing – Taiwan (Single O-Ring)

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The 20″ Big Blue Water Filter Housing – Taiwan is a durable, high-capacity housing designed for residential, commercial, and pre-RO filtration systems. Additionally, it features a single O-ring for reliable sealing, ensuring leak-free performance. It accommodates standard 20″ × 4.5″ filter cartridges, making it ideal for sediment removal, carbon filtration, or whole-house water treatment. Moreover, its Taiwan-manufactured construction guarantees long-term stability even in demanding water conditions.

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Key Features

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• Single O-Ring Seal: Ensures a tight, leak-free connection while allowing easy maintenance.

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• Fits 20″ × 4.5″ Cartridges: Accepts sediment, carbon block, CTO, GAC, and specialty filters.

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• High-Capacity Housing: Perfect for whole-house and high-flow filtration setups.

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• Taiwan Quality Build: Strong polypropylene body designed for durability and pressure stability.

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• Easy Servicing: Compatible with standard Big Blue wrenches, brackets, and cartridges. In addition, replacement cartridges are widely available.

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Technical Specifications

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• Housing Type: 20″ Big Blue (single O-ring)

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• Cartridge Size: 20″ × 4.5″

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• Material: Heavy-duty polypropylene

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• Port Size: Typically 1″ (confirm your model)

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• Operating Pressure: Up to approx. 6 bar

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• Temperature Range: ~4°C – 38°C

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Benefits for Your Filtration System

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This Taiwan-made Big Blue housing provides large filtration capacity and improved water flow, making it suitable for borehole systems, municipal water polishing, or pre-filtration for reverse osmosis. Furthermore, the single O-ring design ensures easy sealing without over-tightening. Consequently, it reduces leaks and maintenance hassles, while the large internal diameter allows high flow with minimal pressure drop.

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Installation & Maintenance Tips

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• Mount vertically with enough clearance to remove the sump during cartridge replacement.

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• Always depressurise the system before opening the housing.

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• Additionally, lubricate the O-ring with food-grade silicone before re-installing.

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• Replace filters based on water quality (typically every 6–12 months).

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• Finally, check for leaks after re-pressurising the system.

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