ND are single stage centrifugal pumps with hydraulically balanced impeller, volute casing with end suction and top radial delivery,shaft with mechanical seal.
The impellers, developed to be highly efficient, guarantee the most
economie service.
Standardisation of the common parts to a very high degree simplifies spare parts storage.
The UNI 2223/29 PN 16 pipe flanges are used for the standard construction; on request flanges according to ANSI 150 RF.