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

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.

Key Features

• Single O-Ring Seal: Ensures a tight, leak-free connection while allowing easy maintenance.
• Fits 20″ × 4.5″ Cartridges: Accepts sediment, carbon block, CTO, GAC, and specialty filters.
• High-Capacity Housing: Perfect for whole-house and high-flow filtration setups.
• Taiwan Quality Build: Strong polypropylene body designed for durability and pressure stability.
• Easy Servicing: Compatible with standard Big Blue wrenches, brackets, and cartridges. In addition, replacement cartridges are widely available.

Technical Specifications

• Housing Type: 20″ Big Blue (single O-ring)
• Cartridge Size: 20″ × 4.5″
• Material: Heavy-duty polypropylene
• Port Size: Typically 1″ (confirm your model)
• Operating Pressure: Up to approx. 6 bar
• Temperature Range: ~4°C – 38°C

Benefits for Your Filtration System

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.

Installation & Maintenance Tips

• Mount vertically with enough clearance to remove the sump during cartridge replacement.
• Always depressurise the system before opening the housing.
• Additionally, lubricate the O-ring with food-grade silicone before re-installing.
• Replace filters based on water quality (typically every 6–12 months).
• Finally, check for leaks after re-pressurising the system.