Miniature Diaphragm Liquid Pump PML5331-NF10 | 12V DC, 3.7W

The PML5331-NF10 Miniature Diaphragm Liquid Pump is a compact, efficient 12V DC pump designed for precision fluid transfer in a wide range of DIY, electronic, and industrial applications. Running at just 3.7W and 0.31A, this low-power diaphragm pump delivers reliable, self-priming liquid movement in a small, lightweight form factor — ideal for prototyping, lab equipment, beverage dispensing systems, aquaponics, cooling circuits, and more.

Made in Mainland China.

Key Features

Compact Diaphragm Design: Self-priming mechanism allows operation without pre-filling — simply connect and run.
12V DC Operation: Compatible with standard 12V power supplies, battery packs, and microcontroller-driven systems.
Ultra-Low Power Draw: At only 3.7W / 0.31A, this pump is energy-efficient and safe for continuous or intermittent use in low-power setups.
Quiet & Smooth Flow: Diaphragm technology minimises vibration and noise compared to traditional gear or centrifugal pumps.
Versatile Liquid Compatibility: Suitable for water and many non-aggressive liquids, making it a go-to choice for DIY electronics, hydroponics, and small-scale automation projects.
Durable Construction: Built to handle extended use cycles with minimal maintenance.

Technical Specifications

Model	PML5331-NF10
Operating Voltage	12V DC
Power Consumption	3.7W
Current Draw	0.31A
Pump Type	Diaphragm (Self-Priming)
Country of Origin	Mainland China

Common Applications

DIY electronics & maker projects
Hydroponics & aquaponics systems
Liquid dispensing machines
Small-scale cooling circuits
Lab & scientific equipment
Beverage & water dispensing prototypes
Robotics & automation builds

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For general guidance on safe electrical DIY practices and component handling, visit OSHA's Electrical Safety Resource.

Frequently Asked Questions

Q: What type of liquids is the PML5331-NF10 diaphragm pump compatible with?

A: The PML5331-NF10 miniature diaphragm liquid pump is suitable for water and most non-aggressive, non-corrosive liquids. It is not recommended for use with strong acids, solvents, or highly viscous fluids unless the pump materials have been verified to be compatible.

Q: Is the PML5331-NF10 self-priming?

A: Yes, the diaphragm design makes this pump self-priming. It does not need to be submerged or pre-filled to begin operation — simply connect it to a 12V DC power source and it will draw liquid automatically.

Q: Can I control this pump with an Arduino or Raspberry Pi?

A: Absolutely. At 12V DC and only 0.31A draw, this pump can be easily controlled via a relay module or MOSFET switch driven by an Arduino, Raspberry Pi, or any other microcontroller, making it perfect for automated DIY liquid-dispensing or cooling projects.

Q: What is the difference between a diaphragm pump and a centrifugal pump?

A: A diaphragm pump uses a flexible membrane to move liquid in discrete strokes, making it self-priming, quieter, and capable of running dry without immediate damage. A centrifugal pump uses a spinning impeller and must usually be submerged or primed before use. For small-scale, intermittent-use applications, diaphragm pumps like the PML5331-NF10 are often preferred.

Made with care

Great value

Elegant design

Quality materials

This product is crafted with quality materials to ensure durability and performance. Designed with your convenience in mind, it seamlessly fits into your everyday life.

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