12V water pump recommendations for sustained use?

Adam32 · Post by **Adam32** » Sun Feb 09, 2020 6:24 pm

I have this pump, which is pretty good:
https://www.ebay.co.uk/itm/72W-12V-130P ... SwiMBdrX1T

The only problem is, you can't really use these pumps for more than about 30 minutes before they get too hot. I want a 12v pump that will withstand a few hours of continual use when used with mist nozzles.

Any recommendations?

APDIY · Post by **APDIY** » Mon Feb 10, 2020 12:07 am

The Tech details:

Service life: more than 500-1000 hours of continuous work

Nos · Post by **Nos** » Mon Feb 10, 2020 7:21 am

A 12vlt pump, pumping cold water about should not get hot, it use's the water as a coolant and as a lubricant, hence the instructions not to run dry, it should easily manage an irrigation system, however, if you are using a lot of misting nozzles, and I assume they are in a green house :dunno:

then your problem could be that you are overloading the pump, a misting system takes a lot of water pressure to work correctly, you need to find out their flow rate and "Bar" pressure multiply by the amount you have, and compare it with the pumps ratings.

ayjay · Post by **ayjay** » Mon Feb 10, 2020 8:25 am

Sorry, but I have no idea of the purpose or function of mist nozzles.

Can you use a submerged pond pump? They'll work away for years without overheating.

APDIY · Post by **APDIY** » Mon Feb 10, 2020 2:42 pm

Nos wrote: ↑Mon Feb 10, 2020 7:21 am A 12vlt pump, pumping cold water about should not get hot, it use's the water as a coolant and as a lubricant, hence the instructions not to run dry, it should easily manage an irrigation system, however, if you are using a lot of misting nozzles, and I assume they are in a green house then your problem could be that you are overloading the pump, a misting system takes a lot of water pressure to work correctly, you need to find out their flow rate and "Bar" pressure multiply by the amount you have, and compare it with the pumps ratings.

I agree with you and the advertized uses.

APDIY · Post by **APDIY** » Mon Feb 10, 2020 2:49 pm

Pressure: 0.90MPA (MAX 130PSI)

The largest flow: 6L/MIN

The work: intermittent service (continuous working at different working pressures at different times)
Service life: more than 500-1000 hours of continuous work

Someone-Else · Post by **Someone-Else** » Mon Feb 10, 2020 11:35 pm

ayjay wrote: ↑Mon Feb 10, 2020 8:25 amSorry, but I have no idea of the purpose or function of mist nozzles.

Can you use a submerged pond pump? They'll work away for years without overheating.

Just FYI, mist nozzles are used for a variety of things, but in short it produces a fine mist. Some use them in green houses as the water is so fine (Mist) it does not damage the plants.
In order to achieve mist, high pressure is required, your average pond pump does not produce enough pressure to properly operate a mist nozzle.

Adam32 · Post by **Adam32** » Tue Feb 11, 2020 5:21 pm

someone-else wrote: ↑Mon Feb 10, 2020 11:35 pm mist nozzles are used for a variety of things, but in short it produces a fine mist. Some use them in green houses as the water is so fine (Mist) it does not damage the plants.
In order to achieve mist, high pressure is required, your average pond pump does not produce enough pressure to properly operate a mist nozzle.

Pressure is much more important than Litres per minute for mist. I get about 100psi from the garden tap, so these pumps are actually better at 130 psi. I don't need much volume of water, it's the pressure that I need. Any other ideas guys?

APDIY · Post by **APDIY** » Fri Feb 14, 2020 6:08 pm

@Adam32. does your garden tap pressure of 100psi run a misting system?