The SP90.18.253D is the mid-range model in the TRUEMAX A9 stationary concrete pump range — a diesel trailer pump built to push concrete up buildings rather than along the ground. It delivers up to 90 m³/h through an S-valve at up to 18 MPa, driven by a 253 HP Deutz engine, and that higher pressure is what lets it feed concrete to the upper floors of mid- to high-rise buildings. The brochure positions it for medium and mid-to-high-rise building work, where a stationary concrete pump on a fixed pipeline is more economical than a boom pump for tall, repetitive floor pours.
Between the small SP50.10.82D for roads and bridges and the high-pressure SP100.23.360D for the tallest high-rise, the SP90.18.253D is the everyday building pump — enough output and pressure for most multi-storey projects, paired with a concrete placing boom to distribute concrete across each floor. Like every TRUEMAX pump it is built and tested in our own factory in Haining, runs an open hydraulic circuit, and is backed by ISO 9001:2015 and CE certification and service in more than 120 countries.
1. S-valve pumping for C15–C70 — An S-valve and a strong pumping system with optimised mixing blades and small dead angles give clean suction and steady output across a wide mix range, from C15 to C70 concrete.
2. One-button twin piston return — Both pistons return into the water box at the touch of a button, which makes changing the delivery cylinders and wear parts faster.
3. One-button high / low pressure switching — Switch between high and low pressure on the fly to trade output for the pressure needed to pump to the upper floors.
4. Hydraulic integration block — A compact valve manifold shortens the oil passages, lowers internal flow resistance and keeps the hydraulic system temperature stable.
5. Dual-drive lubrication — Manual plus fully-enclosed automatic relubrication keeps the moving parts greased and extends service life.
6. Chrome-plated delivery cylinder — The Φ200 mm cylinder bore is chrome-plated for a service life above 100,000 m³, with the cutting ring and glass plate made from rigid alloy.
7. Deutz diesel with energy-saving control — A 253 HP air-cooled Deutz engine runs independent of site power, and the power-matching algorithm raises pumping efficiency by up to 15% and cuts fuel use by up to 10%.
8. Intelligent control and protection — Real-time monitoring, self-diagnosis that cuts fault-finding time by up to 70%, and automatic overload and low-fuel protection guard the engine and oil pump.