At all times they fought, or rather, they tried to fight the forces of nature. First come up with ways to keep the rain out, so in the XI century BC in China and Egypt were first umbrellas. Then come up with waterproof clothing (in 1823godu Englishman Charles Macintosh invented the raincoat) and rubber shoes (here discoverer fairly unknown). And in the XX century, scientists have decided to disperse rain clouds by aircraft. Heart Specialist is full of insight into the issues. But, as Practice shows that all these methods are good, but they still will not save humanity from the flood, flood, or simply excessive drainage water in the basements of houses. Well, since we can not deal with the elements, then we will deal with it consequences.
For this purpose have been invented drainage pumps. This is where humanity for decades has made a huge leap from the simple and primitive inventions to high-tech industrial equipment. Species drainage pumps are now a huge set. There are domestic pumps for cleaning the well and the huge suburban industrial units, which are draining the construction pit, filled with dirty manure from a mixture of stones, sand, clay, water, etc. minutes. There is a submersible pump, which are entirely immersed in the pumped water, and is self-priming, which are on the surface and pumping occurs pipeline system. There are submersible pumps, which are equipped with an automatic shutdown at a certain level of penetration of drainage, usually a pump with float switch.
There are pumps with single phase or three-phase motor, hot water or cold, to clean or very dirty, with plastic housing or the details of the flow part, made of stainless steel, expensive or cheap, imported or domestic. When choosing a pump must be very clear about what is supposed to download this machine, because not all the drainage pumps are designed for the same purposes and to cope equally well with task. When choosing, it is advisable to consult a specialist. Varieties of drainage pumps, perhaps a little less than colors of rubber boots. And with the unneeded water pumps compete much more effectively than earlier invention of mankind, which could only cover parts of the body from falling.