API Bb2 Oil Centrifugal Multistage Pump (AY)

It features:

Use 45, 56, 70 bearings to replace the former 35, 50, 60 ones, enhancing the reliability.
A high effective energy saving hydraulic model is used for the hydraulic portion, the average efficiency is higher than that of Y type by 5 8%.

Toensure the inheritance, the type of structure, external and installation dimensions and performance range of this pump are made identical to those of Y type so as for the oil apparatus to be easily reformed.
Refined selection of materials, the main body takes the materials of, categories as the base, the bearing etc. Partsare made of cast steel and cast iron two materials, providing the use at a cold outdoor and on a ship with a benefit condition.

The parts are widely universal and the standard parts can be used mutually for several series products.
Three cooling ways are available with the bearing: Air, blower and water cooling, selectable upon different medium temperatures. Of which the blower cooling is especially suitable for the area lack of water or of a poor water quality.

Performace range
Flow: Q=2.5 600m3/h
Head: H=30 - 330 mm
Medium temperature transported: T=-45 ° C + 420 ° C

Model Meaning
50 AY II 60 * 2B 250AYS III 150C
50, --------- Diameter of pump's suck inlet
AY --------- Reformed centrifugal oil pump(S-the first-stage impeller is dual-suction)
II --------- Code of flowing part materials: Cast steel: Stainless steel
60 --------- Single-stage head(m)
2 --------- Stage number of impeller
B --------- Cut times of impeller, expressed with A, B, C inturn.