What are the Specifications of Plastic Shafts Used in Septic Tanks

With the help of  septic tanks installation bethany, you will be able to receive only the best for your home and family. The inspection windows (shafts) are made of high-density polyethylene by the spiral winding technology of polyethylene and polypropylene. Both in them and in the pipes are identical properties of materials in terms of chemical influences and all other types of resistance both on the internal content and on the external pressures and loads.

Their interior is smooth, while the ring is spirally winding through the outer wall, but depending on the need, it is possible to make the so-called a sandwich profile where the ring is in the middle between the inner and outer edges. Depending on the requirements of the project, plastic shafts are made with open or closed option, they have welded climbers on a vertical wall and are additionally loaded in the lower zone as protection from the influence of groundwater during the installation itself (part of the shaft under it is filled with sand or concrete weight due to the effects of the lifting during assembly and loading).

By selecting these shafts and their extrusion welding on the outside or on the inside (depending on the diameter of the pipe), the harmful influence of the high level and the pressure of the groundwater on the pipeline is very effectively neutralized, and in most cases where the angle of the bottom of the pipe is below the level of the river and the sea, the flows are very active, the choice of such a pipeline is made, precisely because it guarantees a high percentage of leakproofness in relation to other types of joints (concrete-PVC, gum, ...)

Plastic shafts - dimensions

The height depends on the project conditions, and can be up to 12 meters. Plastic shafts are absolutely waterproof, considerably easier in the sense of concrete shafts, they are easier to install and, most importantly, sealing between shafts and sewer pipes can be ensured, whether pipes are made of PEHD or PVC. In addition, HDPE shafts have sufficient elasticity in order to avoid cracking during certain movements of the ground. Benefits in relation to conventional concrete shafts are: a small mass of the manhole that allows considerably faster installation and manipulation, as well as lower transport costs, absolutely waterproof and non-porous, have great stiffness and elasticity so that shifting does not occur when shifting the soil. The plastic shafts have a long-life span of 50 years. The production of these products (plastic pipes and shafts) also means installation on the ground, i.e., construction of pipelines.

Manhole heads

Plastic sewers for sewers and water meters require manholes for water meters made of high density polyethylene in standard sizes.

Water meters are manufactured in two variants: thermo insulating seals and polystyrene insulation shafts, which allow the normal operation of water meters at extremely low temperatures.

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