Pump Technologies at Putzmeister: Innovative and reliable
Putzmeister concrete pumps with the S-Valve 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 1,745-feet (532m), or a pump height of 1,990-feet (606m) at the Burj Khalifa job site. Even in these cases both machines and accessories were not operating at their limits, Putzmeister pumps can be counted on to perform reliably on demanding projects around the world.
With high delivery pressures up to 1,855 psi (130 bar), and maximum delivery outputs of up to 238 yd³/h (182m³/h), Putzmeister pumps are ideally suited for all concreting tasks.
Ideal for high pressure applications, our Big Mouth S-Valve effortlessly handles extremely harsh concrete mixes. It's huge 9-inch (230mm) intake opening provides a superior filling rate, while the long and controlled reduction of the S-Valve ideally forms the concrete for pumping.
Durability
Specific details such as durable delivery pistons, hard-chromed material cylinders and the S-Valve system ensure that all machines are able to withstand long periods of intensive use.
Mode of operation
- The low lying remixer paddle pushes the concrete directly in front of the cylinder openings
- Two powerful and fast-switching switch cylinders move the S-Valve back and forth in front of the large cylinder openings, thus releasing the pressure and intake openings alternately.
- Depending on the position of the S-Valve the concrete is being pulled into a cylinder or pushed 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 (.pdf, 372 kB) 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. Of course it is also available with truck-mounted 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.
