12mm Push Fit Pipe Fittings

Our 12mm Push Fit Pipe Work & Fittings range is perfectly suited for koi keepers who want a clean, reliable, and easy-to-maintain setup. Designed for aeration systems, filtration lines, and general pond plumbing, these fittings allow you to create secure, leak-tight connections without tools, glue, or heat—ideal for both new builds and upgrades to established koi ponds.

Built from durable, corrosion-resistant materials, 12mm push-fit components are engineered to handle the demanding environments of koi systems, where consistent airflow and water movement are essential for fish health. The clever collet and O-ring design ensures each connection locks firmly into place, providing excellent sealing while keeping flow unrestricted.

The range includes straight connectors, elbows, tees, valves, reducers, stem fittings, and robust pipework, giving koi hobbyists everything needed for an organised, professional-quality installation. All fittings are also fully demountable, making maintenance tasks—such as cleaning lines, swapping equipment, or expanding an aeration system—quick and hassle-free.

Whether you keep a small koi pond or a large, heavily stocked koi collection, 12mm Push Fit Pipe Work & Fittings provide a dependable, pond-safe solution that helps ensure optimum water quality, efficient airflow, and a tidy, well-managed system.