Product structure Non-self-priming, single stage, single suction, horizontal axial suction and radical discharge, pump body is fixed by base. Standard wear-resistant mechanical seal TEFC motor, size complies to IEC standard NISO pump use bearing cradle, which can orientate bearing, prevent from radical vibration, improve the rigidity of rotary part. NISO pump integral pump shaft, use deep grove grease lubricated bearing NISO pump use semi-flexible coupling to connect pump and motor. NISO pump dimension conforms to Iso2858 standard NIS, NISF series pump are coupled with extension shaft structure. Inlet and outlet flange and pump body of cast iron pump conform to standard of Pn16 in GB/T172416(ISO7005-2 ); Inlet and outlet flange and pump body of Stainless Steel pump conform to standard of PN16 in GB/T9113(sO7005-1).