The device of sewage systems and their equipment depends on many factors. First of all, it is the volume of wastewater, the depth of freezing of the soil, the presence and level of groundwater, the features of the relief structure, the type of soil, the requirements of the administration, and of course from financial capabilities. All plumbing devices and a network of pipelines that remove sewage from the premises are called internal sewer. The vertical pipes, according to which the waste flows directly into the sewer wells, is called a riser.
I have long wanted to buy a new case for the iPhone 4s, but you don’t know where cheaper? We advise you to visit our . and buy a cover for the iPhone 4s we have inexpensive.
The upper part of the riser is called the hood and is excreted above the roof skate and serves to remove gases from the outer sewage. Due to the fact that all the diving networks are made by unpaired, in the horizontal plane of each floor, I mount with a small slope, so that the water can go into the riser by gravity. To prevent the output of sewer gases into the room, each plumbing device is connected to the drivers using a special lock, which uses in the principle of a hydraulic shutter. He is a pipe U – a figurative shape and is filled half by water, Koraya does not allow the gases to penetrate out.