SOW single-stage double-suction pumps

Product description
SOW series single stage double entry pump is a horizontally split volute centrifugal pump, mainly used to handle clean water or liquids similar to water in physical and chemical properties, temperature not above 105℃. It is suitable for transportation of ordinary liquid in the areas of waterworks, pump stations, power stations, water circulation in air conditioning, hot water circulation in heating, industrial water supply system, fire control system, ships and oil refining etc.
Operation data
Outlet diameter: DN=80～500mm
Flow: 50～4200m3/h (rated point)
Head7.6～160m (rated point)
Allowable working pressure: 2.5 MPa
Allowable test pressure: 3.75 MPa
Medium: clean water or other liquids similar to water in physical and
chemical properties. (Solid particles ≤80mg/L)
Temperature105℃
Hydraulic
Optimally designed hydraulic model gives pumps not only outstanding hydraulic performance, but also no axial force, which is, theoretically, a problem remaining in pumps, especially large pumps. Pump body, cover and impeller are precisely cast. Smooth flow surface has improved its anti-cavitation performance and efficiency.
Seal
Packing seal or mechanical seal can be used according to the medium to be handled or to users’ requirements, not limited to rotation direction. For packing seal, there is enough space to replace the packing.
Working conditions
1. Allowable working pressure 2.5MPa, that is, pump inlet pressure + head ≤2.5MPa. According to the maximum pressure to be borne by pump casing, pump body and cover can be made of grey cast iron (1.6MPa), spheroidal graphite cast iron (2.0MPa) and cast steel (2.5MPa). Please detail the pressure bearing or materials of pump when placing an order.
2. Medium: clean water or other liquids similar to water in physical and chemical properties, temperature ≤105℃. (Solid particles ≤80mg/L).
Bearing
1. Enclosed rolling bearing which is lubricated by grease to achieve simple maintenance and long operation.
2. Provided with oil cup with constant oil level, or lubricated by thin oil.
3. Use of imported (SKF, NSF or NTN) high quality bearing to achieve smooth operation, low noise and long service life.
Structure
Compact structure and sound stability. This pump takes a split structure of casing, with inlet and outlet both on the pump body. For maintenance, just need to take out the pump cover, then rotor part can be moved out for examination, with no need to disassemble pipeline, which is fairly easy to do.
Motor (driver) can be on the left end or on the right end according to actual needs, which is for the convenience of installation on site. Structurally, it has shortened the axial dimensions of rotor, providing better rigidity of shaft, and making operation more dependable. Sealing ring is fitted on pump body, while impeller sealing ring is an optional part. Sealing ring can be replaced after being worn out, which is to reduce the maintenance cost in operation. Material of main part
Materials of main parts Optional materials (for options)
haft 45、2Cr13（stainless steel）
ump body and cover HT250、QT400-15（spheroidal graphite cast iron）、ZG230-450
mpellerHT200、ZCuSn11（bronze）ZG1Cr18Ni9（stainless steel）
HT250、QT400-15（spheroidal graphite cast iron）、
ZCuSn11（bronze）ZG1Cr18Ni9（stainless）
Performance paramenters