Grundfos fire systems end-suction pump NBF is an end-suction pump made for fire sprinkler pump applications. NBF is a close-coupled type and NKF is a long-coupled type. The NKF fire system is an NBF or NKF end-suction pump integrated with a coupling and a driver, which may be an electric motor or a diesel engine, assembled on a base frame.
Electric pump types can be ordered as a COMPACT model (inclusive of a controller integrated onto the baseframe). Diesel-driven NKF. A controller always forms a part of the system.