advice needed on pump issue

[Guest]

hi all

need advice on 12v water pumps, as need to flood a area then empty it, is there certain pumps to get?

as need ones which are quite fast, really need 2 one to fill ,one to empty or is there a pump which will do both?

any advice would be great or threads to link to

many thx

maninblack

[Guest]

You don't say how much or how large the quantity or volume required is.

Is it a small model ballast tank or fish pond size?

Bogs

[Guest]

size

hi mate

oops!! its a model the area to fill is roughly the size of a washing up bowl , say about a sink full, i need to fill the bottom part of this kit to hopefully submerge and empty

it to hopefully bring it back up!!

thx

M.I.B

[Guest]

hi mateoops!! its a model the area to fill is roughly the size of a washing up bowl , say about a sink full, i need to fill the bottom part of this kit to hopefully submerge and empty

it to hopefully bring it back up!!

thx

M.I.B

Hi Mick,

The easiest way and by far the cheapest is to get hold of some 12v windscreen washer pumps from a scrapyard etc, the ones that plug into the washerbottle are best as they have a large inlet hole and mount on the bottle that way, if this is not feasable then you can use the ones with a small inlet and outlet pipe and install this somewhere and run pipes from the outer hull.

if you use these pumps they will drain back through them so you can iether use 2 pumps with one way valves in line one for filling and one for emptyimg or one pump and then pinch the inlet pipe ( silicone tubing is best ) to satop the tank draining, activation of the pups via microswith or if accurate in / out measurement is neede a speed control with forward / reverse. These pumps deliver quite a lot of water flow and are self priming.

Hope this is of use

regards Sub.

[Guest]

pump

hiya sub...

long time no speak:grinball2:

i was thinking of the car washer pumps, but you no me never easy!! this particular sub has no tank..as such

but a watertight compartment which we hope to fill and empty would it be better to have 2 pumps 1 to fill and 1 to empty?? also will these type of pumps work in water?

thx mate

mick

[Guest]

Mick,

I think these pumps are designed to work WITH water, not IN water, even though DC motors are sometimes quite happy running underwater with no protection, hence sunken model boats many yards from where they originally sank. Unintentioned submarines.

There are basically two types of this style of pump, one uses gears for pumping the water (expensive) the other uses a rubber impellor (cheap).

The rubber ones will allow a little drainback, but not as much as you think, but of couse, I have never used them with 5ft of water pressure from above, so as suggested, non return valves to prevent runback. You can buy all the non return valves and fittings very cheaply from auto accessory shops. Also you should consider easily accessible inline filters, you never know what is lurking in the depths.

John

[Guest]

pumps

thx john

will keep mind open but so far these ideas seem to be at the top... will keep eyes and ears open though...

thx again

mick

[Guest]

thx johnwill keep mind open but so far these ideas seem to be at the top... will keep eyes and ears open though...

thx again

mick

Hi Mick, I am still here just , a pic of a gear pump should appear they are about £6.00 a High Tech parts make serial number PEWP01, you can reverse tham and the motor is encapsulated in a metal housing that you can seal with glue / resin where it meets the plastic body then seal the + terminal.

Why do they ned to be in the Wet area anyway ?

regards Sub.

[ATTACH]17928.IPB[/ATTACH]

[Guest]

pump

hi sub

is there a link to the sellers as would like to find out more on these

cheers

mick

[Guest]

hi subis there a link to the sellers as would like to find out more on these

cheers

mick

Hi to all the guys, as most of you know im a fixed wing and heli man. Now i have read the comments... all very well valid and true, but i got to thinking as i also keep Koi. Pop down to the local garden centre that has an aquatic section and buy a little 12v subersable pump that they use for airating and filtering the small tanks. Only a few quid each. I think some tank kits are around £12.00 For that you get the tank, pump, pipe and transformer.

Andy

[Guest]

kit

hi mate

thx for that dont know if these will be ok as they will not be elec but batt powered..

cheers

mick

[Guest]

hi matethx for that do you think somewhere like b+q might do somethin like it?

cheers

mick

No mate, not B&Q. Mainly garden centres, where about are you?.

[Guest]

pump

No mate, not B&Q. Mainly garden centres, where about are you?.

east london mate..

[Guest]

east london mate..

Just looked in B&Q, no good. What to look for if you can is a little indoor water feature, they use tiny little pumps that are submersable amd 12 volts. I have two features here with them in. Dobby World, Hootys places like that.

Andy

[Guest]

what about a peristaltic pump, the type used in norbert bruggens sub kits,

i use these in my model subs, they will pump in both directions, there is a silicon tube which is squeezed by rollers driven by the motor.....

12 volts is no problem.... and they too self prime, plus once the motor is switched off there is 'no leakage' in either direction as the silicon tube remains crimped....

they are available via norbert but you can get them direct from gardner denver

http://www.gd-thomas.com/productSubCategoryList.aspx?tp=l&tc=10694

or view all styles of pumps at

www.rtpumps.co.uk