Comment is superfluous – obviously, these units are made of materials resistant to aggressive environments. Modern pumps, in most cases, by virtue of design features can not pump very hot liquids. Types of engines with centrifugal pumps, actuated by electric motors, pumps have the same design a working system, but differ in the presence of gasoline or diesel motor. An important advantage of the internal combustion engine-complete autonomy. Pumps can operate where there is no electricity.
However, the bound and disadvantages – the noise at the same time and availability exhaust. Engines pumps accesories usually have small dimensions, for sufficiently large capacities and resources work. Pumps with gasoline engines, diesel is cheaper, but the cost of fuel is higher. Their lifespan in the Compared with diesel, below. Gasoline engines are used primarily for low-capacity pumps to 2000l/min.Dizelnye engines productive and economical engine. With any type of motor mechanism pump can not pump air. start can cause the wheel will be spinning idle, that will cause overheating, so before starting the engine should be completed working volume of the liquid. Although Now available pumps that do not require filling with liquid, they immediately come into operation.
If you often include pumps to facilitate the re-start, you need to install a check valve on the end suction hose. Then the water would flow from the working chamber. In most cases, pumps for pumping liquids, more pressure is required for them, the figure is 25-35 meters. If a pump is used under the guise of remote water source, be aware that on 10 meters long horizontal pipeline lost about 1 m head. The depth of absorption. Average maximum depth of suction at pumps ACCESORIES-7-8, 5 meters. Set modern pumps accesories – self-priming and for the initial start rather fill it with water only part of the pump casing, which then produce motor pump water extraction blank suction hose. And in most cases, This figure corresponds to the lower end. Typically 8.5 meters – the maximum depth from which water can raise the self-priming motor pump Kiev. Therefore, the optimal location for the pump – just above the water surface. To improve the depth of the suction, it is necessary to install injection – a specialized device that is lowered into the water with a hose. When you work part of raised liquid will come back for additional hose, increasing the thus the pressure at the inlet. Losses at the same time the transfer of water. This figure depends on the hydraulic resistance in pipes, joints, taps, including the hose. The wider the pipe, the less hydraulic resistance. Hose with a corrugated outer surface more durable, but inside he must be smooth. Otherwise, the corrugated inner surface will degrade the water pressure, and, moreover, such a hose less durable. It should also worry about the fact that the hand was long enough – pumped water should be poured on a remote distance, otherwise the next day it can seep into the pit again. By the way if the end suction hose is located very close to the water surface to avoid water hammer can not be allowed to hit him in the air. This may damage the blades of the wheel.