Plumbing Parts » Bottom Drains » Koitoilet I

The most versatile and complete solution for Aerated Koi Pond Bottom Drains.

• Sweep bottom design to eliminate trapping debris.
• Full 4" height over horizontal discharge pipe.
• 1" Air supply connection at the bottom through center column.
• Screws are fully embedded in large and strong screw pockets.
• Threaded center column for easy disassemble and maintenance.
• Wide and thick flange for better liner grip.
• Slanted air dome and high quality air diffuser with internal check valve function.