Häny ZMP 710 pump

Häny ZMP 710 is a compact, wear-resistant piston pump (plunger pump) for grouting, with a single pump module. It is designed for pumping suspensions with a low water/cement ratio and mortar containing sand, and is suitable for all grouting work as well as pumping backfill mortar behind segmental linings in tunnels.

The pump is supplied with an 85, 105 or 120 mm piston unit, and performance depends on the piston chosen: capacity 3.9 / 5.5 / 7.5 m³/h (w/c = 1) and maximum pressure 100 / 68 / 50 bar. The largest particle size is 8 mm. Grouting pressure and delivery rate can be limited steplessly, a fast suction stroke flushes the valves to prevent clogging, and the wear parts are easily accessible. The cooling water connection makes continuous operation possible even at high ambient temperatures.

The control system is PLC-based with lockable main switch, emergency stop and pump on/off. Manual pressure and flow control plus indicators for oil level, temperature and filter contamination are standard. Options include a low-pressure control valve, additional piston units, remote control and data logging of pressure and flow. The motor delivers 7.5 kW at 50 Hz for 3x 400/460 V, the hydraulic tank holds 140 l and the weight is approx. 620 kg.

Typical applications are grouting of anchors, soil nails and prestressing tendons, sleeve-pipe, rock and contact grouting, pre-grouting and post-grouting, pumping of bentonite suspensions for pipe jacking and microtunnelling, and pea gravel filling.