The drainage system has a water-permeable filter layer (1) over a drainage trench (2). The filter layer has a seal (5), for sealing downwards, and a water extraction (3) over the seal. The seal is a length of flexible material, or it is a mineral sealing layer. The water extractio...
Don't Connect Downspout Drains to In-Building Drains & Floor Drain Systems The sketch at left illustrates several reasons why it's a bad practice to connect roof drainage downspouts to drains that run through the building or under the building floors. Clogs in the vertical section of the down...
To ensure the alignment of the walking support, the cylinders are made with DOUBLE pistons, part of the cylindrical chambers of which are loaded with check valves, while the other part of the chambers are load-able to align manually controlled distribution valves 13 The disadvantage of this devi...