Valve Replacement Made Easy

Save time, simplify maintenance and maximize productivity with the patented Rebecca® Cartridge Valve System from Cook Compression.

The two-part cartridge valve system consists of a permanent valve body (“cage”) and replaceable cartridge assembly. The cartridge contains the complete valve mechanism and seat.

To remove a cartridge, simply swing the engine rocker arm out of the way and unscrew the cartridge from the top of the cage. The cage and all fuel gas piping remain in place, and the only tool needed is a socket wrench.

To install a Rebecca cartridge, simply replace the gasket and screw in the cartridge.

Ordinary fuel valve replacement can take up to three hours. A typical Rebecca cartridge change-out takes only 10 to 15 minutes.

Additional Features

  • Top-load design for easy access
  • Spring-loaded, non-metallic, self-adjusting packing allows low-friction operation and reduces stem leakage
  • Patented inert gas, pressure-buffered system available on request
  • Low-friction, pre-lubricated bushings at both ends of the Rebecca valve stem eliminate the need for lube maintenance

Conversions for Most Engines

Cooper, Clark and Worthington integral engines are easily adapted for the Rebecca system. For most applications, Cook Compression supplies a new cage. Upon request, the original cage of certain models can be modified to accept the Rebecca cartridge.

For Clark engines

For Cooper-Bessemer engines

For Worthington engines


  • Fugitive emissions control
  • Proprietary long-life sealing element
  • Works with mechanical or hydraulic lifters
  • Simplifies maintenance, minimizes downtime
  • Quality and reliability field-proven worldwide in a variety of applications