Bottom Drain 4″ Sump Style

The Kockney Koi 4″ Sump Style Bottom Drain is a high-efficiency pond drainage solution designed to remove waste and debris from the pond floor while offering an alternative flow path to traditional straight-through Tommy or mushroom style bottom drains. Featuring a side outlet positioned beneath the protective lid, this sump-style design allows debris to settle and be drawn away efficiently without passing directly through a vertical outlet.

Unlike straight-through bottom drains, the internal sump chamber with side outlet helps promote controlled water movement and effective waste capture, making it a popular choice for koi ponds where precise pipe routing or specific installation requirements are needed.

Suitable for use in fibreglass ponds, concrete ponds, and rubber-lined ponds, this bottom drain is ideal for professional koi pond builds and high-performance filtration systems. Its robust construction ensures long-term durability and reliable operation in demanding aquatic environments.

Proudly manufactured in the UK for over 35 years, the Kockney Koi sump style bottom drain reflects decades of proven design expertise and commitment to quality.

Key Features:

• 4″ sump style bottom drain with internal side outlet

• Side outlet positioned beneath the lid for effective debris removal

• Helps reduce waste and debris build-up on the pond floor

• Alternative to straight-through Tommy / mushroom style bottom drains

• Improves pond hygiene and filtration efficiency

• Suitable for koi ponds and large garden ponds

• Compatible with fibreglass, concrete, and rubber-lined ponds

• Manufactured in the UK with over 35 years of experience

The Kockney Koi 4″ Sump Style Bottom Drain is a reliable, professional-grade solution for cleaner pond bases, efficient waste removal, and long-term koi pond performance.