Mini DC 3.7V Micro Diaphragm Water Pump 370 Motor DIY Garden

$17.00 $19.21

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Mini DC 3.7V Micro Self-Priming Diaphragm Water Pump – 370 Motor

Compact, powerful, and incredibly versatile — this Metal Micro Self-Priming Diaphragm Water Pump is the perfect addition to your DIY electronics toolkit. Driven by a reliable Metal Brush 370 Motor and operating at a low DC 3.7V, this miniature pump delivers efficient water movement for garden watering systems, small aquariums, desktop fountains, robotics projects, and more. Its self-priming design means no manual priming is needed — just connect, power up, and go!

Made in Mainland China.

Key Features

Self-Priming Design: Starts pumping immediately without manual priming — ideal for automated DIY setups.
Metal Brush 370 Motor: Durable and efficient motor construction for reliable, consistent water flow.
Low Voltage Operation: Runs on DC 3.7V, making it perfectly compatible with small battery packs, Li-ion cells, and microcontroller projects.
Compact Metal Body: Rugged metal construction ensures longevity and resistance to wear in wet environments.
Universal 4.1mm Ports: Both inlet and exhaust ports measure 4.1mm outer diameter, compatible with standard mini tubing.
Versatile Applications: Great for garden irrigation, aquariums, desktop water features, cooling systems, and hobbyist robotics.

Technical Specifications

Motor Type	Metal Brush 370 Motor
Operating Voltage	DC 3.7V
Normal Pumping Current	~0.26A
Max Current (short-term only)	~1A
Inlet Outer Diameter	4.1mm
Exhaust Port Outer Diameter	4.1mm
Material	Metal
Package Contents	1 × Mini Water Pump

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Frequently Asked Questions

Q: What voltage does this mini diaphragm water pump operate at?

A: This micro water pump is designed to operate at DC 3.7V under normal conditions. It draws approximately 0.26A during regular pumping operation. A maximum current of ~1A is possible but is only suitable for short-term use to avoid motor overheating.

Q: What are the best DIY applications for this 370 motor water pump?

A: This mini diaphragm pump is ideal for a wide range of DIY projects including small-scale garden irrigation systems, desktop water fountains, aquarium water circulation, electronic cooling systems, Arduino/Raspberry Pi projects, and hobbyist robotics builds. Its compact size and low voltage requirement make it extremely versatile.

Q: What tubing size is compatible with this micro water pump?

A: Both the inlet and exhaust ports have an outer diameter of 4.1mm, making them compatible with standard mini silicone or vinyl tubing available at most hardware or hobby stores. Ensure your tubing inner diameter matches for a snug, leak-free fit.

Q: Is this pump self-priming?

A: Yes! This is a self-priming diaphragm pump, meaning it can draw water up from a source without needing to be manually filled or primed beforehand. Simply connect your tubing, supply power, and the pump will begin moving water automatically.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.

We prioritize quality in selecting the materials for our items, choosing premium fabrics and finishings that ensure durability, comfort, and timeless appeal.

We strive to process and ship all orders in a timely manner, working diligently to ensure that your items are on their way to you as soon as possible.