Drive parts: asynchronous motor (mainstream in industry), permanent magnet synchronous motor (energy-saving), explosion-proof motor (dangerous working conditions); Variable frequency control can achieve stepless speed regulation;
Pump head/hydraulic end: impeller (centrifugal), gear/screw (volume), plunger/diaphragm (high pressure/metering);
Sealing system: mechanical seal (industrial standard, leak proof), packing seal (low-cost), magnetic drive (contactless zero leakage);
Auxiliary components: couplings/direct flanges, bases, inlet and outlet flanges/threads, check valves, filters, pressure gauges/sensors, cooling/lubrication circuits.