Pump Technologies at Putzmeister: Innovative and reliable

With high delivery pressures of up to 130 bar for delivery outputs of up to 190 m³/h, Putzmeister pumps are suitable for all concreting tasks. 

The S-transfer tube is the optimum leak-proof delivery system as there is only one point of separation between the spectacle plate and the transfer tube. The entire switch-over hydraulics and bearings lie outside the concreting area. The low number of parts and ease of exchange make them extremely maintenance friendly.  Additionally, the hopper does not have to be dismounted to exchange the wear parts.

 

Durability

Specific details such as the durable delivery pistons, series standard chrome-plated delivery cylinders and the S-transfer tube system designed by Putzmeister ensure that all our machines are able to withstand long periods of intensive use.

 

Mode of operation

  • The low lying agitator which is driven at both ends shifts the concrete directly in front of the cylinder openings.
  • Two powerful and quick moving switch cylinders (which are muffled) move the trunk back and forth in front of the large suction openings, thus releasing the pressure and intake openings alternately.
  • Depending on the position of the S-valve the concrete is lighting into a cylinder or pressed through the delivery pipeline.

 

Piston Pump (S valve system)

Stationary concrete pumps with the S-transfer tube are continually setting new world records in vertical and horizontal delivery. For example, in 1994 at Riva del Garda in Italy, concrete was pumped vertically over 532m! Or a pump height of 606m at the Burj Khalifa job site. Even in these cases, both the machines and accessories were not operating at their limits. Even when dealing with difficult concrete Putzmeister machines can be counted on to perform continiously and reliably.

Wherever extremely stiff and highly abrasive mixes are encountered this system is used for concrete pumps. In pre-cast factories you will find always find a piston pump when it comes to high strength concrete, steel fibre concrete or when there is a longer distance to cover.

The S-valve is the first choice for concrete pressures above 85 bars. This is especially useful for long pumping distances over stationary pipelines. The Putzmeister S-valve is especially designed for long life and high concrete pressure. This results in long service intervals and increased availability of the machine. To extend the life of the S-valve, the inside wall can be rebuilt by hard face welding.

 

Rotor Pump

 

Mode of operation

One of the greatest strengths of this pump with Ergonic® system is the computer assisted control that ensures the machine operates extremely quietly and runs smoothly at a constant speed. Other key characteristics include the extremely low wear of the pump components and minimal concrete residue. More precisely, the rotor hose is the only wear part on the pump and can be replaced very quickly and easily. The rotor pump can convey materials that are less suitable for a piston pump (e.g. lean mortar, screed and steel fibre, lean, SCC, liquid concrete, broken material, air-entrained concrete). The durability and simplicity of the rotor pump can be attributed to the efficient agitator. The material is mixed in the feeder container and then drawn through the feeder cone into the rotor. This prevents the concrete from setting, even after a long duration of time.

 

Cleaning

Since only the rotor hose comes into direct contact with the material, both the hose and the delivery line can be cleaned thoroughly with a sponge ball in a very short time, consuming only a small amount of water. If the feeder container has a sloping base, water and concrete residues collect on the hopper flap. Nearly 100% of the concrete in the hopper can be delivered to the construction site, i.e. no more concrete residue and detours, expensive concrete residue disposal can also be avoided.