Summary

The second-generation YW(P) series under-liquid sewage pump is a new and patented product latest developed by this Co.specially for transporting various sewages under harsh working
conditions and made by way of, on the basis of the existing first-generation product, absorbing the advanced know-how both at home and abroad and using WQ series submersible sewage pumps hydraulic model of  the most excellent performance at present.
      YW series under-liquid sewage pump not only has  the all su-perior performances of the WQ series submersible sewage pump but also greatly opens out the applocable working conditions and fields of use of the latter due to its unique form of installation.

Application

      Suitable for steel works,  power plant,  coal works, mine, ho-spital, municipal works, chemical industry,  medicine, building, hotel, sea-wat er suction and drainage etc. trades  to transport the  
industrial sewage with grains and fibres,  the citys lovong sew-age or rain water and pure water, and also for some flow processes of chemical  industry.

Advantage

        The second-generation YW(P) series under -Luquid  sewage pump is designed by taking durability, easy use, stability,reliability and free of main tenance as the target an d has the
following merits:

1 High Efficiency Non-block up
        The uniquely designed single, doubl e-ge at imp eller, opening model, double leaf model impeller is high effectiv e without block-up, the pump casing etc. flow- through parts optimizedly designed for completing with the impeller can be selected with their materials and models upon the t ransported media and can be made sure of the exce llent hydraulic performance and working life in the transporta tion of the media containing suspended grains and long fibres,corrosive and abrasive.
        The geat is wide and sm ooth and is suitable to tr ansport the solid grain of a diameter abo ut 50% of the pump aperture.Double mechanical seals in series are used as the mechanical  
seal to provide a double protection and the frictional  secondary one is a spiral seal made of anti-corrosive sinteredtungsten carbide or silicon carbide and of  a special structure and can thus  be
ensured to continuously run without leakage.  
2 Stable,durable without  vibration
      The pump is vertically  structured, the  drive unit(motor stand, clutch, drive shaft,  connecting stand, bearing)is modular  designed and can be superposed at  will along with the variation of  the under-water depth. Both pump casing and impeller can be placed under liquid by 0.5-10m and the motor above the liquid surface, then, via connection with the drive unit, direct ly drives the nonblock impeller to stably run without  vibration.
       At the pumps inlet  a suck-in barrel  is set, its  exquisite  design makes the sucked liq uids level as deep as possib e, without block-up and with a good anti-twine sewage-removal property.  
      The integral structure of  the pump is designed comp act, st-able, durable and easily mountable.
      The pump can be used with common Y series  motor and,  if fitted with Y,Y2 series outdoor-type motor,  it can be avoided to build a pump house, reducing the investment for consturction,  
and the motor  can be mounted on the ground,  leaving a convenient operation, overhaul  and maintenance.seal ring is used as  the static seal,  it settles the problem of leakage and greatly enhances the pumps life.
     The motor is not placed under water and the cable as  well. Able to transport  and suck the sewage of a temperat ure 80 C and below, ultimately satisfying the applocable occasion or  
the requirements of  use of dirty and oil resistance,  wearability and with a higher temperature.