Progressive Cavity Pump · Pumps
The Heishin Heishin Mohno 5-12 is a progressive-cavity positive-displacement pump. It is normally installed in sludge, bilge, waste, fuel or process systems. It is designed for steady low-pulsation transfer of viscous, contaminated or shear-sensitive liquids. In operation, a helical rotor turns inside a stator to move sealed cavities toward discharge. The supplied entry states the pressure designation as 12 bar; this information is retained unchanged. Compared with neighbouring models, the relevant differences are rotor/stator size, stages, elastomer/material selection and drive; these must be confirmed from the installed documentation rather than inferred from the model designation alone. Service and survey attention should concentrate on dry-running protection, rotor/stator wear, seal leakage, drive load and suction condition. For exact ratings, dimensions, tolerances, test limits and model-specific settings, refer to the manufacturer documentation for the exact figure.
Every value below comes from the manufacturer datasheet or class-society record on file for this model.
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What our service work and the manufacturer documentation say about keeping this model running.
Trend suction/discharge pressure, flow where available, motor current, vibration, bearing temperature and leakage. Inspect strainers, valves, seals, bearings, coupling, foundation and rotation and verify standby/changeover arrangements for critical services. Apply pump-type-specific manufacturer limits during overhaul.
Carry seals or packing, gaskets, bearings, coupling elements, filter/strainer consumables and selected motor/starter parts. Critical duties may justify a spare impeller, rotor/stator, screw/gear set or complete pump according to the actual pump principle.
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