The SPECK BADU Aquaswim 4 is the highest-capacity filter in the Aquaswim range, engineered for superior water clarity in large residential or commercial pools. With a 28″ diameter tank and the ability to hold 160 kg of sand, this model supports pool sizes up to 115,000 litres. Built from corrosion-resistant polyethylene with rugged ABS internal components, the Aquaswim 4 provides long-lasting, low-maintenance operation.

An integrated side-mounted multiport valve and internal automatic air relief system make this filter easy to install and service, while delivering consistently high filtration performance.

• Key Features

• 28″ filter diameter with 0.29 m² surface area
• Seamless polyethylene tank for corrosion-free durability
• ABS high-flow internal components
• 160 kg sand capacity (4 × 40 kg bags)
• Side-mounted multiport valve for easy access and control
• Automatic internal air relief system
• 60-month ex-factory warranty on tank and valve

✓ Benefits

✓ Ideal for large residential or commercial pools
✓ High turnover capacity for water clarity up to 116,000 litres
✓ Easy to maintain with accessible service points
✓ Durable materials extend filter life
✓ Efficient design reduces operational downtime

Technical Specifications

• Filter Size: 28″ (710 mm diameter)

• Filter Area: 0.29 m²

• Sand Capacity: 160 kg (typically 4 × 40 kg silica sand bags)

• Maximum Flow Rate: 14.5 m³/h at 80 kPa

• Operating Pressure: Up to 2.5 bar

• Weight (Empty): 17.13 kg

• Recommended Pool Size: 60,000–115,000 litres

• Turnover Capacity:

  • 4-hour: 58,000 L

  • 6-hour: 87,000 L

  • 8-hour: 116,000 L

• Dimensions (H × L × W): 700 × 950 × 610 mm

• Suggested Pump Pairing: ±1.1 kW

What You Get

1 × SPECK BADU Aquaswim 4 Sand Filter (sand not included)
Includes side-mounted multiport valve and user manual