Construction 

Close-coupled, single-impeller, centrifugal pumps; electric motor with extended shaft directly connected to the pump. 

NR, NR4: Single head pump. 

NRD: Twin head pump with built-in automatic switching valve. the two head can operate singularly or in parallel. 

Pump casing with suction and delivery connections with the same diameter and on the same axis (in-line).

Applications 

For clean liquids, without abrasives, which are non-aggressive for the pump materials (contents of solids up to 0.2%). 

For heating, conditioning, cooling and circulation plants. 

For civil and industrial applications. 

When low noise operation is required (n ≈ 1450 rpm).

Operating conditions 

Liquid temperature from -10 °C to +90 °C. 

Ambient temperature up to 40 °C. 

Total suction lift up to 7 m. 

Maximum permissible working pressure up to 10 bar. 

Continuous duty.