Advantages: Good for small jobs. Disadvantages: Has limited use.
.... The pump is designed to be used at 3000 revolutions per minute, and will handle liquids and semi solids. The inlet and outlets are both half inch bore, and are fitted with quick release couplings.
If you have a garden pond that needs emptying from time to time, of you are digging footings that tend to fill with water, then this may be just the job. You will find many more uses for these pumps once you have one, and you will find they get borrowed a lot. I have used mine for pumping out a cellar, emptying cisterns, as well as flooded boats.
As for the noise, well, they are as noisy as the electric drill that drives them. They are self priming, and will lift up to about 3 metres. These are also Made in Britain.
As long as you accept their use is limited, you will be more than happy with them. They are on sale at a lot of places nowadays...
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...I have owned an Oase (pronounced oh-ah-sir) aquamax 10,000 for 3yrs, and it has been in use everyday, for twenty-four hours a day, without any kind of malfunction. Which is exactly what I require from a pump that is working a gravity fed filter for a pond full of koi carp.
This pump is capable of pumping 1980 gallons per hour, although you will lose some of this through friction in the pipes and if you are pumping to a higher point than the pump itself, (this is called head and all pumps suffer from it). It can pass small solids up to 10mm without jamming, which stops snails and other small debris clogging it up.
Although not the cheapest (available mail order for approx. £150:00 when I acquired mine) in terms of reliability it has certainly justified it’s price, I have used cheaper pumps on my ponds only to have them fail...
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..."All hands to the pumps" is of course the old nautical term, luckily nowadays we no lonher have to work pumps manually.
Firstly, these are centrifugal pumps, it just means they work by using centrifugal force to spin the water to the outside of the pump casing. It also means they are not self priming, which is fine as long as you have some other way of filling the system with water, otherwise you will not pump anything.
Also, being a centrifugal pump, it will not slip water, meaning if you close the outlet it will build up pressure in the pump casing. In order to stop this, you will usuallyu find a by-pass, so excess pressure can divert, preventing the pump from exploding.Providing this by-pass is serviced, you will have no trouble.
To expalin priming, all that happens is that you need to extract the air from the system...
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