Description
The QB is a peripheral pump, not a conventional centrifugal. Its peripheral impeller produces high head from a small, space-saving unit. The build is three main parts: an asynchronous motor, the pump body and the sealing system. A single mechanical seal between pump and motor handles dynamic sealing, a water-retaining ring on the shaft keeps water away from the motor side, and O-ring seals at the body joints prevent leaks.
Operating conditions
- Liquid temperature: up to 40 °C
- pH of the medium: 6.5 to 8.5
Performance range
- Power: 0.37 to 0.75 kW
- Head: up to 75 m
- Flow: up to 3 m³/h (50 l/min)
- Head drops steeply as flow rises, so the QB is at its best on low-flow, high-pressure duties
Construction
- Pump body and coupling: cast iron, electrophoresis anti-rust treatment
- Impeller: brass
- Insert: stainless steel
- Motor shaft: 304 stainless steel
- Mechanical seal: ceramic-graphite
- Motor: copper core, built-in thermal protector, aluminium motor case, insulation class F
