Economic solution

Pump operators keep encountering the same problem - how to place concrete into formwork that reaches down a long way. Formwork walls that are five or six metres high are no longer an exception any more. The standard four, resp. Only three metre long end hoses of the truckmounted concrete pumps are, however, no longer sufficient in these cases. But how should one avoid the concrete bleeding when it falls freely in the formwork, of the styropor expanded polystyrene lining of the formwork is damaged? In the field this fact always led to the pump operator extending the end hose with a further hose, but this is prohibited due to safety reasons. Putzmeister knows how to solve this problem - by coupling up a down pipe made of plastic.

Simple ideas are often practical and especially economic solutions. Putzmeister recommends the use of a traditional plastic pipe that is connected up to the tip of the boom of the truck-mounted concrete pumps instead of the standard end hose. This is attached with the aid of a reducer from 125 to 100 mm, and a standard 5,5" clamp coupling.

This is attached at the tip of the boom so that the lightweight plastic pipe moves freely and can be swung in the formwork in any direction. Work with the plastic pipe is completely safe as no dangerous overpressure can build up: already at 2 to 3 bar, the over-pressure is reduced by cracks in the plastic wall so that there is no danger for the operating personnel. The pipe may, therefore, only be used in formwork for concreting: in no way does it replace the standard end hose.
The plastic pipe attachment can be supplied by Putzmeister sales departments (part no. 265433.001) and the plastic pipes can be bought in practically every building supplies shop - quite cheaply in different lengths as sewage pipes.