NOU Series Vertical Sump Diffuser
Electrically driven, vertically suspended, wet-pit end-suction diffuser multistage segmental centrifugal pumps in cantilever design, with single flow radial impellers, a separate discharge pipe, a motor stool and a can (outer casing). The inner casing (a withdrawable rotating assembly) of ring-section design may be installed in an existing vessel or a sump* to be submerged in the medium pumped. The rotor is carried by medium-lubricated radial plain bearing at the balance drum and intermediate bearing and a grease-lubricated top thrust and radial antifriction bearing (of two ball bearings). No shaft sealing is required. NOTE: *Overall and mounting dimensions of the withdrawable element mounting plate (pump cover plate) are made specific after the Customer’s submittal of data on fitting dimensions of a tank mouth flange. Made in compliance with Transneft’s General and Specific Engineering Requirements (OTT and STT resp.).
|Nos||Pump make||Capacity, m3/h||Head, m||Rotational speed (synchr.), rpm||Motor nominal power|
|1||NOU 12.5-80||0.0035 (12.5)||80||3000||To be determined by the manufacturer according to kinematic viscosity of handled medium|
|20||NOU 25-60||0.007 (25)||60||3000||To be determined by the manufacturer according to kinematic viscosity of handled medium|
|30||NOU 25-360||0.007 (25)||360||3000||To be determined by the manufacturer according to kinematic viscosity of handled medium|
|39||NOU 40-120||0.011 (40)||120||3000||To be determined by the manufacturer according to kinematic viscosity of handled medium|
|53||NOU 50-350||0.014 (50)||350|