CHRIS-MARINE®

Valve Seat Remover / MPI

Designed for easy removal of worn valve seats from cylinder heads. The equipment consists of an induction generator which generates a high frequency current to an insulated water-cooled induction coil.

  • Valve seat removal
  • Very fast and easy process
  • Minimises damage to the cylinder cover seat recess
  • No welding or force needed

The coil heats the valve seat fast, typically in 15 seconds. As the seat heats up, it softens and tries to expand. The cold cylinder head prevents this, so the seat deforms. After cooling, the diameter has been reduced by 0.3-0.5mm, allowing removal without force.

The coil heats the valve seat fast, typically in 15 seconds. As the seat heats up, it softens and tries to expand. The cold cylinder head prevents this, so the seat deforms. After cooling, the diameter has been reduced by 0.3-0.5mm, allowing removal without force.

The coil heats the valve seat fast, typically in 15 seconds. As the seat heats up, it softens and tries to expand. The cold cylinder head prevents this, so the seat deforms. After cooling, the diameter has been reduced by 0.3-0.5mm, allowing removal without force.

MPI Valve Seat Remover

MPI Valve Seat Remover

MPI Valve Seat Remover

MPI Valve Seat Remover

MPI Valve Seat Remover

MPI Valve Seat Remover

For easy removal of valve seats from cylinder heads

The Multi Purpose Induction tool (MPI) is used to remove worn valve seats from cylinder heads. The equipment consists of an induction generator which generates a high frequency current to an insulated water-cooled induction coil. The coil is designed to fit a specific valve seat centered on the valve guide and induces a current to the valve seat which makes it heat up rapidly. The MPI is an extremely accurate tool, working with an open flame, thus preventing noxious gasses, soot or heat loss to the surroundings. The cold cylinder head prevents the valve seat from expanding and after cooling, the seat diameter has been reduced by 0.3 – 0.5 mm, and can be removed without force.

For use in several different applications such as:

  • Valve seat removal
  • Shrink fitting
  • Brazing & soldering
  • Spot heating
  • Extra coils can be added to use the equipment for different engine types
Technical specification
Weight 160 kg
Electric power supply 3 x 360-400 V 50/60 Hz, 40 kVA
Output power 30 kW
Output frequency 40-60 kHz
Cooling requirements 10-12 l/min @ 2 bar
Generator dimensions (HxWxD mm) 1350 x 600 x 600 excl handles etc

Often bought together with