K-S Twin Disc Pump

This video highlights some of the key features of the K-S Twin Disc Pump.

A New Take on Sludge Pumping

We have heard from our customers and we are listening.

Komline-Sanderson is re-introducing technology it first unveiled 40 years ago. Our Twin Disc pump is an induced flow pump designed for transferring biosolids sludges typically found in municipal and industrial wastewater streams.


  • Self-priming
  • Handles entrained gases without losing prime
  • Can run dry for indefinite periods without damage
  • Pass up to 7/8” spherical solids
  • Easy Tilt Access. Designed to allow easy access to pump body for cleaning and suction/discharge disc removal.

Move solids laden sludges typically found in municipal and industrial wastewater treatment systems.

  • Primary sludge
  • Thickened Sludge
  • Waste activated sludge
  • Sludge transfer
  • Belt filter press feed
  • DAF float
  • Scum
  • Easy Tilt Access (Patent Pending) allows easy access to pump internals
  • Self-priming with ability to handle suction lifts and entrained gases
  • Can run dry indefinitely without damage
  • No critical tolerances
  • Low cost of maintenance
  • Common replacement parts are easily accessible
  • Class 30 cast iron construction
  • Easy access to Neoprene discs, trunnions & check valve
  • Two-piece aluminum connecting rods
  • SS frame designed for Easy Tilt Access to pump internals.
  • Small foot print

Why our Twin Disc Pump?
When applications require a suction lift, our Twin Disc Pump can handle high lifts and reprimes and will not be damaged should it run dry.

In addition, when floor space is at a premium, our Twin Disc Pump does not require any additional space for its maintenance.

Why a plunger pump?
When the application requires a suction lift or moving heavy sludges that involve head requirements that can bog down other types of sludge handling pumps.

Can the pump handle a suction- ft?
Plunger pumps are self-priming pumps and can reprime a suction line up to 15 ft and pull suction lifts up to 20 ft but these numbers are based on water and the pump located very close to the source. (Note: The higher the sludge concentrations the lower the suction lift capabilities.)

Why is the flow rate unaffected by the system head?
A plunger pump is a positive displacement pump and its performance curve is a nearly vertical line. When a plunger pump is set to do 100 GPM, it will try to do that flow rate whether it is pumping against 10 ft of head or 300 ft of head. Only the horsepower will vary.

Does your “Leak Free” packing really work?

K-S has put many engineering hours into its patented packing design, which involves stabilizing the plunger to move in only the vertical direction. This, in turn, allows for better sealing of the packing against the plunger.

We have noticed marked reduction in the leakage associated with plunger pumps and for extended periods of time.

Grit is still the biggest problem to the life of the packing and the plunger but this can usually be overcome by enhancing the materials of construction to more abrasion resistant materials such as ceramic or tungsten carbide coating plungers.