ALW Series Horizontal Pipeline Single-stage Direct Connected Centrifugal Pump

Overview
ALW , ALWR . ALWH , ALWY , ALWHY , ALWD , ALWRD , ALWHD .ALWYD and ALWHYD series horizontal centrifugal pumps are optimally designed with domestic advanced hydraulic models .which are based upon the performance parameters of IS and IR centrifugal pumps , and IS02858 standard . They are a new generation of highly effective and energy-saving horizontal pumps

Features
1 . Compact structure . Horizontal structure , integration of motor and pump , appealing appearance and less occupation space .Compared with ordinary horizontal pumps , it saves occupation space by 30% . If IP54 outdoor motor is used , it can be used outdoors with no need of a pump room
2 . Smooth operation , little noise and high concentricity of components . Close coupled motor and pump to have simplified intermediate structure and increased running stability . Impeller is provided with excellent dynamic and static balance to obtain no vibration and low noise in operation , which has lengthened the service life of bearings and improved the service conditions
3 . Use of quality mechanical seal for shaft seal , rotating and stationary seal rings made of hard alloy to effect abrasion resistance , leak tightness and long service life
4 . Use of advanced hydraulic model to feature high efficiency and sound performance
5 . Distinctive structure Pump body fitted with water drain hole at the underside , inlet and outlet flanges fitted with pressure tapping , thus to ensure normal operation and maintenance
6 . This series of pumps have horizontal inlets and vertically upward outlets for the convenience of pipeline arrangement.

Usage
1 . ALW horizontal centrifugal pumps are used to handle clean water and liquids similar to water in physical and chemical properties . They are applicable to industrial and city water supply and drainage , pressurized water supply in high-rise constructions ships , garden irrigation , fire-fighting pressurization , distant transportation , heating , ventilating , refrigeration circulation , and bathrooms for cyclic pressurization of cold and hot water , and other equipments . Temperature of service medium not exceeding 85°C.
2 . ALWR horizontal hot water circulating pumps are applicable to pressurized circulation of hot water for boilers used in the fields of energy sources . metallurgy , woodworking . chemical , textile,papermaking , restaurants , bathrooms , hotels and etc , and heating circulation in houses . Service temperature below 120°C.
3 . ALWH horizontal chemical centrifugal pumps are applicable to handling corrosive liquids in the industries of petroleum chemical , metallurgy , electric power , papermaking , foodstuff .pharmaceutical and synthetic fiber etc . Service temperature-20~105°C.
4 . ALWY horizontal explosion-proof oil pumps are applicable to handling inflammable and explosive liquids in the industries of petroleum , textile , chemical and machinery etc . The temperature of medium to be delivered not exceeding 120°C.
5 . ALWHY stainless steel horizontal explosion-proof chemical centrifugal pumps are applicable to handling inflammable and explosive chemical liquids.
6 . ALWD . ALWRD ALWHD . ALWYD and ALWHYD horizontallow speed centrifugal pumps are applicable to conditions that are very strict with environmental noise , especially applicable to cooling water , circulation of cooling water , and end pressurization of air-conditioning system.

Working Conditions
1.Flow range : 1 . 8-2000m³/h
2.Lift head : < 130m
3.Medium temperature : -100~80°C , 105°C
4.Ambient temperature : max . + 40°C , height above sea level lower than 1500m : RH not higher than 95%
5 . Max . working pressure : 1 . 6MPA ( DN200 or below ) and 1.0MPA ( DN250 or above ) : max working pressure inlet pressure valve closing pressure ( @ = 0 ) , and inlet pressure * 0 . 4MPA . When the inlet pressure is higher than 0 . 4MPA or the systems max working pressure is higher than 1 . 6MPA ( DN200 or below ) or1 . 0MPA ( DN250 or above ) , it shall be noted separately in the order so as to adopt spherical graphite cast iron or cast steel in making the pumps flow-through part , and the mechanical seal shall be selected otherwise
6 . For any solid insoluble substance in the working medium its unit volume shall be less than 0 . 1% and its granularity < 0 . 2mm7 . Companion flange option : PN1 . 6MPA-GB / T17241 . 6-1998