Micro DC 3V–3.7V Self-Priming Peristaltic Water Pump | DIY & Garden

Micro DC Peristaltic Water Pump — Precision Flow Control for Any Project

This compact Micro DC 3V–3.7V Self-Priming Peristaltic Pump is the versatile liquid-transfer solution for makers, hobbyists, gardeners, and DIY enthusiasts. Whether you need precise dosing, automated watering, aquarium dosing, or small-scale liquid handling, this miniature pump delivers consistent, adjustable flow at low voltage.

Why Choose a Peristaltic Pump?

Peristaltic pumps move liquid through a flexible tube by squeezing and releasing it in a wave-like motion. This means the fluid only ever contacts the tubing — not the pump mechanism — making it ideal for clean, contamination-free liquid transfer in DIY projects, plant watering systems, aquarium dosing, and laboratory setups.

Key Features

• Wide Voltage Range: Operates on DC 3V to 3.7V — compatible with standard AA/AAA batteries, Li-ion cells, and USB power banks
• Reversible Flow Direction: Easily switch inlet and outlet by reversing polarity, giving you full control over flow direction
• Adjustable Flow Rate: Vary voltage or speed to fine-tune the output to your exact needs
• Self-Priming: Starts drawing liquid automatically — no manual priming required
• Compact & Lightweight: Micro form factor fits tight spaces in enclosures, planters, aquariums, and more
• Quiet Operation: Low-noise design suitable for indoor and desktop use
• Versatile Compatibility: Works with water, nutrient solutions, and other thin, non-corrosive liquids

Ideal Applications

• Automated plant watering and drip irrigation
• Aquarium and fish tank dosing systems
• DIY electronics and Arduino/Raspberry Pi projects
• Small-scale liquid dispensers and transferring systems
• Science fair and educational experiments
• Hydroponics nutrient delivery

Specifications

• Voltage: DC 3V – 3.7V
• Type: Peristaltic / Self-Priming
• Flow Direction: Reversible (switch polarity)
• Size: Compact micro form factor
• Liquid Compatibility: Water and non-corrosive thin liquids

Please Note: Colors shown in product images may vary slightly depending on your monitor's brightness and display settings. Please refer to the actual product received.

For more information on safe electrical component use in DIY projects, visit the U.S. Consumer Product Safety Commission (CPSC).

Frequently Asked Questions

Q: What is a peristaltic pump and how does this micro DC pump work?

A: A peristaltic pump moves liquid by compressing a flexible tube in a rolling wave motion, which pushes fluid forward without it ever touching the pump's internal parts. This Micro DC 3V–3.7V self-priming peristaltic pump operates on low voltage, starts drawing liquid automatically, and can transfer water or other thin non-corrosive liquids quietly and consistently — perfect for DIY, garden, and aquarium projects.

Q: Can I reverse the flow direction of this peristaltic pump?

A: Yes! One of the standout features of this micro DC peristaltic pump is its reversible flow direction. Simply reverse the polarity of the power leads and the pump will move liquid in the opposite direction, swapping the inlet and outlet — ideal for draining or filling applications.

Q: What power source does this pump require?

A: This pump runs on DC 3V to 3.7V, making it compatible with standard AA/AAA battery packs, single-cell Li-ion/Li-Po batteries, and USB power adapters with a step-down module. It's a great fit for battery-powered and Arduino/Raspberry Pi projects.

Q: What liquids can this micro peristaltic pump handle?

A: This pump is designed for water and other thin, non-corrosive liquids such as nutrient solutions, plant fertilizers, or aquarium additives. It is not suitable for corrosive chemicals, oils, or viscous fluids.