Double Flanged Expansion Joints Function or Characteristics.

Double Flanged Expansion Joints Function or Characteristics.
Double flange type expansion joint has a beautiful appearance, directly installed in the storage of the medium being conveyed, no additional footprint, thus reducing the infrastructure investment, installation and maintenance is very convenient, great space saving, the most important thing is that the vertical under-liquid double flange type expansion joint is resistant to idling, do not worry about the lack of water. Specifically the following aspects: compact overall structure, small size, low noise, smooth operation, energy saving effect is remarkable, easy maintenance. Double flange type expansion joint can work when submerged in water, greatly reducing the project cost. In general, the suction range of double flange expansion joint will be reflected in the manual, but this data is derived from clear water as the standard medium. Therefore, the self-priming height should also be related to the medium, specific gravity, viscosity and so on, in the selection of the type, usually selected on the large side. In front of the double-flanged expansion joint with a self-priming cylinder, that is, to increase the geometric inversion height.
 
In the water system in the pipe body material should be selected cast iron, more corrosion-resistant, pipe body material is gray iron or double-flange expansion joints are generally selected in accordance with the pressure, the fire water system pressure is generally below 1MPa, so the gray iron will be able to fully meet the use of the requirements, but double-flange expansion joints are better mechanical properties of the point.
 
If the suction pipe is full of overflow water, although the height of the shaft of the water double flange expansion joint is higher than the working level of the pool, but due to the function of the double flange expansion joint, the water in the suction pipe will not flow into the pool, so that the water pipe is always full of water to ensure that the double flange expansion joints can be movable and flexible.