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KTP – Stainless Steel Multi-Stage Mechanical Seal Chemical Process Sump Pump

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  • Multi-stage sump pump, with injector for suction lifts up to 10 m
  • Very robust design
  • Suitable for fluids with a high solids content
  • Ideal for emptying tanks that have no bottom drain when used in combination with an injector
  • Maintenance-free injector without any moving wear parts
  • Pressure ratings up to PN 40 for a wide range of applications, e.g. pumping liquefied gas

KTP BrochureOrder »
KTP Fact Sheet

KTP + injector

Operation Range
Capacities 2 to 100 m3/h
Heads 5 to 130 m
Pressure ratings Up to PN 40 (injector: PN 16)
Temperatures -20°C to +160°C
Kinematic viscosities 0.5 to 350 mm2/s
Solids handling 0%
Casing Materials
Stainless steel 1.4581 (~316Ti)
Other materials Cast iron
Working Principle
Radial flow pump
Stages Multi-stage
Priming Method
Flooded suction
Sealing System
Double mechanical seal, single mechanical seal
EN standard configuration Frame-mounted (-20°C to +160°C)
Mounting arrangement Vertical
EC Directive 2006/42/EC (Machinery)
Standards DIN EN ISO 5199

Material of construction Cast iron
Connection flanges To EN 1092-1
Drilled to ANSI/ASME B16.5
O-ring materials FEP/FKM
Plug seal material PTFE

Injector Casing

Stainless steel
Cast iron
Carbon-filled PTFE

Connection flange To EN 1092-1

Mechanical Seal
Double mechanical seal Standard commercially available
Single mechanical seal Standard commercially available

Double Mechanical Seal Barrier/Buffer Fluid Vessel

Cooling coil, manometer, thermometer and sight glass
Total volume from 3 to 12 l (depending on vessel type)
Hand refill pump (depending on vessel type)

Vessel connections Stainless steel braided PTFE hose
Stainless steel piping
Bracket Steel
Stainless steel
Pump Protection
Barrier/buffer fluid monitoring Level switch
Pressure switch
Temperature probe
Motor load sensor

Bearing Frame
Lubrication Grease lubrication
Coupling guard Steel


  • Chemical processing:
    basic and fine chemicals
    (agrochemicals, speciality chemicals)
  • Pharmaceuticals


A wide variety, including:

  • Liquefied gas applications
  • Solvent handling
  • Tank unloading


Aggressive, toxic and low-boiling fluids. For example:

  • Bromine
  • Chlorinated and fluorinated hydrocarbons
  • Liquefied gas
  • Mineral acids
  • Phosphorous oxychloride
  • Propylene
  • Solvents

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