AY single two centrifugal pumps (centrifugal pump | centrifugal pump) series, is a Y-type oil pump in the old series, based on the transformation and re-design. It is to meet the needs of modernization, as soon as possible to adapt to the energy-centric equipment replacement and development of new products have the following characteristics: 
 1, bearing the body parts of the body bearing the original 35,50,60 45,55,70 bearing body were used to improve reliability. 
 2, over-current parts of the hydraulic energy efficient pump with a hydraulic model, the average than the old Y-type oil pump efficiency 5-8%. 
 3, in order to maintain continuity, AY-type oil pump structure type, installation size, range of performance parameters remain the same with the Y-type oil pump, the old device to facilitate the renovation. 
 4, a high degree of common parts, standard parts through several series of products for the share. 
 5, selection of refined, subject to Ⅱ, Ⅲ class-based materials, bearings and other parts of the body to increase as steel, cast iron two, for the cold regions, cold regions exposed, open-air use, providing favorable conditions for marine. 
 6, bearing an air cooling, fan cooling, water-cooled three, according to the different temperature pump selection. Fan cooling is particularly appropriate and in the water or poor water quality areas. 
 AY single, two Pump Performance Range: 
 Flow rate Q = 2.5 ~ 600m3 / h Head H = 30 ~ 330m temperature T =- 45 ℃ ~ +420 ℃ 
 AY-type pumps used in petroleum refining, petrochemical and chemical industries and other local delivery of solid particles of oil, liquefied petroleum gas and other media. 
 50AY Ⅱ 60 × 2B, 250AYS Ⅲ 150C 
 50,250 - Inlet diameter (mm) 
 A - First transformation Y - centrifugal pumps S - the first for the double suction impeller 
 Ⅱ, Ⅲ - over-current parts of the parts material code: Ⅰ class HT250, Ⅱ ??class ZG230-450, Ⅲ class ZGCr13Ni. 
 60,150 - single-stage lift (m) 2 - series 
 B, C - impeller cut the number of order of A, B ... ... said. 
 AY-type oil pump is divided into single-stage single-suction and two single-suction cantilever type, single-suction cantilever, single-stage double-suction and two-stage double suction two-supporting, two-stage single-suction of six two-supporting, structure type, such as Figures I-VI. 
 Radially split casing, especially for transmission of high temperatures and flammable, explosive or toxic liquids. Installed in such manner as the horizontal center line of support. The pump suction flange and outlet flange are cast on the pump, and both vertically upward. Bearing cavity (stuffing) and the pump cover is cast one, it can be installed and balanced packing seal, bellows type, tandem mechanical seals. Seal chamber cast out there to choose from jacket water cooling chamber, water-cooled chamber equipped with a special request must be or when the transmission medium is water temperature exceeds 66 ℃ and 150 ℃ when the temperature exceeds hydrocarbons used.