High-Head Dewatering Pumps

Category Model Phase Discharge Bore
( mm )		 Motor Output
( kW )
High-Head Dewatering (Single Impeller) LH 1 80 – 200 3 – 110

  • The LH-series is a submersible three-phase cast iron high head drainage pump.
  • Being the pump cylindrical and slim, it can be installed in a well casing for deep well dewatering.
  • The center flange construction assures a stable installation even if it is fixed by the discharge pipe.
  • The top discharge, flow-thru design provides maximum motor cooling efficiency allowing continuous operation at low water levels and extended dry-run capability.
  • The pump incorporates seal pressure relief ports that prevent the pumping pressure from applying to the shaft seal.*
    * excluding LH33.0

Catalogue

 

Category Model Phase Discharge Bore
( mm )		 Motor Output
( kW )
High-Head Dewatering (Dual Impellers) LHW 1 50 – 100 3 – 110
  • The LH-W-series is a three-phase cast iron extra high head drainage pump having dual impellers.
  • Being the pump cylindrical and slim, it can be installed in a well casing for deep well dewatering.
  • The center flange construction assures a stable installation even if it is fixed by the discharge pipe.

*1 The top discharge, flow-thru design provides maximum motor cooling efficiency allowing continuous operation at low water levels and extended dry-run capability.

The pump incorporates seal pressure relief ports that prevent the pumping pressure from applying to the shaft seal.*2
*1 excluding LH4110W
*2 excluding LH23.0W

Catalogue
Category Model Phase Discharge Bore
( mm )		 Motor Output
( kW )
High-Head Dewatering Tandem Operation (LH/LH-W) 1 50 – 100 3 – 30

  • “Tandem operation” is an operation method that connects two pumps of the same model in series.
  • This provides double pump head at the same flow rate in comparison with that of a single pump. The principle of tandem operation is the same as that with multistage pumps.
  • The LH and LH-W series pumps adopt the center flange construction to align the discharge pipe with the cylindrical pump center axis.*
  • Connecting the pumps in series with the tandem connector can provide higher pump head without affecting the advantage of the slim design.
  • At construction sites, there are many cases where a higher pump head is required as construction work progresses.

In such cases, the addition of a tandem pump may meet the required pump head, instead of using a new pump.

* Available as an option for separately purchased LH33.0 and LH23.0W.

Catalogue
Category Model Phase Discharge Bore
( mm )		 Motor Output
( kW )
High-Head Dewatering GSZ-4 1 150 – 250 37 – 75

  • The GSZ-4-series is a submersible three-phase cast iron high head and high volume heavy-duty drainage pump driven by a 4-pole motor.
  • The side discharge, spiral design allows smoother passage of the sucked solid matters.
  • The motor is cooled by a water jacket that assures efficient motor cooling even when it operates with its motor exposed to air.
  • The pump incorporates seal pressure relief ports that prevent the pumping pressure from applying to the shaft seal.

Catalogue