The Gravity-Flow Auto Siphon (No-Pump Drain)

The Gravity-Flow Auto Siphon (No-Pump Drain)

 

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This is a clever, 3D-printed solution for automatic draining and level control of containers, garden reservoirs, or garage tanks. Based on the principles of fluid dynamics, this siphon allows you to drain water over the edge of a container without the need for electric pumps or manual priming once set up.

It is perfect for rainwater collection, hydroponics, or any situation where you need a reliable, passive overflow system.

 

A great solution for:

• rainwater overflow
• garden irrigation containers
• hydroponic tanks
• water storage buckets
• automatic level control systems

🔧 Printing Recommendations

• Material: PETG (recommended for outdoor use and durability)
• Infill: 100%
• Supports: only on build plate
• Layer height: 0.16 mm recommended