can this pump be run continuously for 6 or seven hours. psi is around 75 is that correct? suitable for engine requiring 2 gallon per min

In my application this pump is running continuously. However, I don't run at this pressure, my app is simply water circulation to cool a motor. And I'm not sure if this pump can generate this amount of pressure.

What is the smallest battry size to operate this pump?

It draws around 500mA. It just depends how long you need to run it. You should expect 1 hour with a 12V 500mA battery

1. Can it be used in either submersed or non-submersed conditions? 2. What is the maximum negative pressure head in non submersed condition ?

It will not work unless it is submerged and the second part of the question i have no idea.

Will this pump work with a 24v system?

This is a 12 volt pump. Running it at 24 volts would most likely damage the windings. Search for a 24V brushless pump like a DC40-2470 should get you close.

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DC40-1250 Brushless Magnetic Drive Centrifugal Submersible Water Pump CPU Cooling DC12V 1A 500L/H 5.0M 14.40W

Product ID: 386309348

Details

Brand
AUBIG
Colour
black
Material
PA66+Glass
Style
Submersible
Product dimensions
8.3L x 6.3W x

💧500L/H ultra flow rate

🔇35dB whisper-quiet operation

🔥60°C max heat tolerance

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EC$224

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In stock

Sold byAmazon Saint Vincent and the GrenadinesDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

💧 Stay cool, stay ahead — pump up your performance!

ENERGY SMART OPERATION - Low 14.4W power draw for eco-conscious cooling
WHISPER QUIET EFFICIENCY - Operates at just 35 decibels—silent yet effective
POWERFUL FLOW PERFORMANCE - Delivers a robust 500 liters per hour to keep systems cool
HEAT RESISTANT RELIABILITY - Handles up to 60°C without breaking a sweat
EFFORTLESS SUBMERSIBLE DESIGN - Fully waterproof for seamless underwater use

The AUBIG DC40-1250 is a compact, brushless magnetic drive centrifugal submersible pump designed for efficient CPU cooling and water circulation. Operating at 12V and consuming only 14.4W, it delivers a high flow rate of 500 liters per hour while maintaining ultra-quiet noise levels of 35dB. Built with durable PA66+glass fiber material, it withstands temperatures up to 60°C, making it a reliable, energy-efficient choice for professional-grade cooling solutions.

Specifications

Manufacturer	AUBIG
Part number	A5HH30001
Item Weight	231 g
Product Dimensions	8.31 x 6.3 x 4.8 cm; 231.33 g
Item model number	A5HH30001
Size	Medium
Color	black
Style	Submersible,Submersible Water Pump
Material	PA66+Glass fiber
Power source type	Battery Powered
Voltage	12 Volts
Wattage	14.4 watts
Item Package Quantity	1
Flow Rate	5E+2 Liters Per Hour
Noise Level	35 Decibels
Included components	NO
Batteries Included?	No
Batteries Required?	No

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