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J Series Self-Priming Sewage Pump

Self-priming Sewage Pump

J Series Self-Priming Sewage Pump

J series are self-priming sewage pumps with the advanced device Maintenance Hole and Wear Plate. They can transfer of liquid containing sand, particle and solid in suspension, superior in performance and maintenance.



    Rapid self-priming: withoutstanding valve. Once filled with water, the pump is automatically primed to a height of 7.6m.
    Simple construction: only one moving part the impeller.
    Open-blade impeller allowing the passage of wide solid bodies and easy.
    High resistance to abrasive liquids the wear plate is easily replaceable.
    Axial mechanical seal lubricated from the outside: no leaks or infiltration of air along the shaft.
    Easy to install: only the suction pipe needs to be immersed in the iquid place, in the most suitable location for service and control.
    Long  life: the parts subject to wear can be easily replaced, a number of times when necessary, restoring the original performance of the pump.
    self-priming sewage pump2s1q
    The air (yellow arrows) is drawn into the pump due to the negative pressure created by the moving impeller and if emulsified with the liquid (blue arrows) contained in the pump body.
    The air-liquid emulsion is forced into the priming chamber where the lighter air is separated and leaves through the discharge pipe; the heavier liquid drops back down into circulation. Once all of the air has been expelled from the suction pipe, the pump is primed and works like a normal centrifugal pump. The pump can also work with an air-liquid mixture.
    The non-return valve has a dual function; it prevents the suction pipe from emptying when the pump is off; in the event of accidental emptying of the suction pipe, this holds a sufficient amount of liquid in the pump body to prime the pump. The discharge pipe must be free to expel the air coming from the suction pipe.

    Design & Material

    Bare Shaft Direct Coupled with Electric Motor or Engine
    Design Performance and Dimensions referring to the European standard
    Structure Semi-openimpeller, Horizontal, Single-Stage, Single-Suction, Self-priming
    DN(mm) 40-200
    Flange All J pumps are casted with flange
    Casing Cast Iron standard, Ductile Iron optional, Bronze optional
    Impeller Ductile Iron standard, Bronze, ASTM304, ASTM316 optional
    Shaft ASTM1045 standard, ASTM304, ASTM316, ASTM420 optional
    Shaft Seal Mechanical Seal(Sic-Sic/Viton)

    Operating Data

    Flow Rate(Q) 2-1601/s
    Head(H) 4-60m
    Speed 1450~2900 rpm(50HZ),1750~3500 rpm(60HZ)
    Temperature ≤105℃
    Working Pressure 0.6 MPa
    Max Solids 76 mm


    ● Waste Water Treatment Plant.
    ● Portable Emergency Fire Fighting.
    ● Marine - Ballasting & Bilge.
    ● Liquid transfer:Transfer of liquid containing sand, particle and solid in suspension.