DIRTY Harry In-line Pre-filter

DIRTY Harry In-line Pre-filter

Protect your pond pump with effective mechanical pre-filtration

The DIRTY Harry In-line Pre-filter is designed to sit before your pond pump, removing larger waste particles from the water before they enter the pump or filtration system. By trapping leaves, small branches, larger algae particles, and other debris, it prevents blockages and protects vital pond equipment.

Installing a pre-filter reduces the amount of coarse waste reaching the main filter, helping maintain consistent water flow and reducing cleaning frequency. It also protects the pump impeller from damage caused by larger particles, helping to extend the service life of the pump.

The transparent housing makes it easy to monitor debris build-up, allowing you to see when cleaning is required without dismantling the unit.

Why use an in-line pre-filter?

Large debris can quickly reduce the performance of pond pumps and filtration systems. Installing the DIRTY Harry In-line Pre-filter helps by:

• Capturing leaves, twigs, algae, and coarse debris
• Protecting the pump impeller from damage
• Preventing blockages in the main filtration system
• Reducing filter maintenance and cleaning frequency

Regular pre-filtration improves water circulation and helps keep your pond filtration system operating efficiently.

Simple installation

The DIRTY Harry In-line Pre-filter is designed for straightforward installation into existing or new pond pipework.

It comes complete with multiple connection options, making it suitable for a wide range of pond plumbing systems using solvent pipe, threaded fittings, or flexible hose.

Ideal For

• Koi ponds
• Garden ponds
• Ornamental ponds
• Wildlife ponds
• Pump-fed filtration systems
• Water features

What’s Included

• DIRTY Harry In-line Pre-filter
• 63 mm solvent pipe unions
• 50 mm solvent pipe unions
• 1½” female threaded connection
• 25 mm hose tail
• 32 mm hose tail
• 40 mm hose tail

Key Benefits

• Protects pond pumps from large debris
• Reduces filter blockages and maintenance
• Helps extend pump lifespan
• Transparent housing for quick inspection
• Easy to install and clean
• Compatible with multiple plumbing connection types
• Suitable for a wide range of pond filtration systems
• Maximum operating pressure of 2 bar

Technical Specifications

• Maximum Pressure: 2 bar
• Housing: Transparent
• Solvent Pipe Connections: 63 mm & 50 mm
• Thread Connection: 1½” female thread
• Hose Tail Sizes: 25 mm, 32 mm & 40 mm
• Installation: In-line before the pond pump

Important Notes

• Install before the pond pump for maximum protection.
• Clean the pre-filter regularly to maintain optimum flow.
• Compatible with solvent pipework, threaded fittings, and flexible hose connections.