Will a 3/16 ID tube work with this?

The nozzle of this Mini Air Pump was 4.2mm (±0.3mm) in diameter, and it will work perfectly with your 3/16 inch ID tube.

Is it possible to run 3 of these with 4 AA batteries?

We modified the project in the youtube video to have LED's in series with each pump for each flavor. We had a voltage drop of ~6V across the pump and ~3V across the LED.We tried a variety of batteries and configurations to demonstrate voltage and amperage, from 9V to a 6V lantern battery. I think we ultimately went with two 9V in parallel plus a pair of D cells in series to give 12 V for each pump/LED circuit. Fun project, my daughter gave it to a friend for her 12th birthday. We failed one LED (shorted), we left out the current limiting resistor thinking the motor would help, but I suppose it has an inrush. For what it's worth, red and green LEDs seem more robust than yellow.This device won't keep the pop cold or from going flat, but as a learning experience these pumps are well worth the money.

How long is its life expectancy

Hello friends, the life of this product is 50,000Times

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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DIMINUS DC 6V Mini Air Pump Motor, DIY and Replacement Accessories, Best for Aquarium Tank Oxygen Circulate (4 Pack)

DIMINUS DC 6V Mini Air Pump Motor, DIY and Replacement Accessories, Best for Aquarium Tank Oxygen Circulate (4 Pack)

Product ID: 41578500

Details

Air Flow Capacity
2 Liters Per
Brand
DIMINUS
Color
Black Blue Red
Item Weight
240 Grams
Power Source
Battery

⚡6V DC energy-saving power

💨2L/min high airflow rate

🔇Ultra-quiet operation <52dB

Description

🐠 Pump up your aquarium’s vibe with silent, powerful airflow!

ENERGY SMART DESIGN - Runs efficiently at DC 6V with less than 300mA current draw.
DURABILITY THAT LASTS - Built for 50,000 cycles with minimal vibration and wear.
DIY REPLACEMENT READY - Perfect for aquarium oxygen circulation or custom projects with 4-pack convenience.
EFFORTLESS OXYGEN BOOST - Delivers a steady 2L/min airflow to keep your aquarium thriving.
WHISPER QUIET PERFORMANCE - Operates below 52dB, ensuring peaceful aquatic environments.

The DIMINUS DC 6V Mini Air Pump Motor is a compact, energy-efficient device delivering over 2 liters per minute of airflow at pressures exceeding 500mmHg. Designed for quiet operation under 52dB and a long lifespan of 50,000 cycles, this 4-pack is ideal for aquarium oxygen circulation or DIY projects, backed by an 18-month warranty.

Specifications

ASIN	B06Y2CXZ67
Air Flow Capacity	2 liters per minute
Brand	DIMINUS
Brand Name	DIMINUS
Color	Black, Blue, Red, Silver, White
Customer Reviews	4.3 out of 5 stars 88 Reviews
Item Weight	240 g
Manufacturer	DIMINUS
Manufacturer Part Number	DIMINUS
Maximum Pressure	500 millimeters_mercury
Model Number	DS002A
Number of Items	4
Number of Packs	4
Operation Mode	Automatic
Power Source	Battery Powered
UPC	730440705578
Unit Count	4 Count

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