Mud flaps

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Dirt trap with the NW 100 for low pressure applications

Liquids and gases that flow in piping systems can contain impurities that can contaminate the pipes, but especially the fittings , and which can clog over time. For this reason, filters are installed as dirt traps at the entry of the pipelines to hold back the impurities. Filter media are usually wire mesh or fine-pored bodies. Devices that are particularly sensitive to dirt, such as steam traps , often have their own upstream filter. Mud flaps are among the fittings.

use

They are used as fittings in pipelines to protect:

Other meanings

vehicle construction

As a strainer even those rather soft parts are referred to on car behind the wheels of the rigid body , according above bottom mounted. They are intended to prevent water from splashing up towards the rear and dust or grains from soiling the body or hitting vehicles behind. Mud flaps could be seen on almost every vehicle up to around 1950 and were probably built particularly long on them until around 1980 due to the typically long spring travel of French cars. In the past, they were shaped more as flexible rubber flaps, later also as molded plastic parts painted in the vehicle color and protruding only slightly downwards. Since plastic interior panels are built into the wheel arches today, their rear edges also function as independent mud flaps in the past. Dirt traps on trucks ("low-noise") have been equipped with grooves on the inside, a coating of spikes or coarse, open-pored foam since around 1990, in order to better dampen rolling and engine noise and to take up dirty water with capillary action despite strong drafts and only again at the lower edge to drain. So that the lobes, which reach deep down, cannot get caught in the tire when driving forwards or backwards in deep snow, they are sometimes gripped near the lower edge by small chains or ropes that lead back and up: This is how they swing forwards to prevents the nearby tire. Behind the last pair of wheels, mud flaps are often laid across the entire width of the vehicle, providing space for labels such as "Extra Long Vehicle", the make of trailer or truck body, dampening the rolling noise, braking the swirling of dust with the draft and improving the slipstream effect on those who follow Cyclist.

Sewer construction

In sewer construction, dirt traps are installed under manhole covers. These are sheet metal tubs that catch dirt that enters through the vantilation openings so that it does not get into the sewer network.

literature

  • Günter Wossog (Ed.): Handbook of pipeline construction. 2nd edition, Vulkan Verlag, Essen 2003, ISBN 3-8027-2723-1 .
  • Norbert Schäfer: District heating supply. Springer Verlag, Berlin / Heidelberg 2001, ISBN 978-3-540-67755-0 .
  • Dietmar Rötsch: Reliability of piping systems. Springer Verlag, Berlin / Heidelberg 1999, ISBN 978-3-642-64308-8 .
  • Pocket dictionary for industrial valves . Vulkan Verlag, Essen 2006, ISBN 978-3-8027-2737-5 .

Web links