Rock Valve for Abrasive Mixes
Hardened rock-valve seats tolerate manufactured sand and recycled aggregate without the blow-by that stalls S-tube pumps mid-pour.
Rock-valve switching · outlet pressure up to 85 bar · EPA Tier 4 Final / EU Stage V pump-truck packages sized for cores, decks and long-line placement.
Parameters procurement and pour supervisors ask for before locking a concrete pump truck into a high-rise schedule.
| Powertrain & Emissions | |
|---|---|
| Engine class | Diesel pump-truck package · ~300–370 kW net |
| Emissions | EPA Tier 4 Final / EU Stage V with DPF + SCR |
| DEF capacity | Sized for multi-shift pour days |
| Hydraulic Pumping System | |
| Valve type | Rock valve for abrasive / high-pressure mixes |
| Max theoretical output | Up to ~160 m³/h (model-dependent) |
| Fluid cleanliness target | ISO 4406 18/16/13 after factory flush |
| Boom & Pipeline | |
| Typical boom classes | 36 m / 42 m / 47 m / 56 m Z-fold |
| Pipeline diameter options | DN112 / DN125 with wear-sleeve kits |
| Cab & Documentation | |
| Operator aids | Remote boom control · pressure transducers · overload interlocks |
| Compliance pack | CE 2006/42/EC · ISO 9001 plant · load / pressure charts |
Hardened rock-valve seats tolerate manufactured sand and recycled aggregate without the blow-by that stalls S-tube pumps mid-pour.
Pressure curves hold vertical cores and long horizontal lines when friction loss climbs with stiff SCC or low-slump structural mixes.
Pump-truck aftertreatment keeps municipal and highway bid packages inside EPA Tier 4 Final and EU Stage V limits without mid-shift derate.
Annual pin-clearance and slew-bearing torque checks keep Z-fold booms inside manufacturer load charts on multi-year infrastructure contracts.
Wear kits, boom elbows and hydraulic filters stocked through regional hubs so pour supervisors are not waiting on grey-market valves.
Application engineers resize hopper geometry, pipeline kits and placing-boom mounts when standard catalog units miss a tunnel or precast duty.