Chiltern Model Steam Engine Boilers are complete with all the fittings needed to power our own and other model steam engines. The Live Steam boiler just needs to be connected to the engine and supplied with a Propane/Butane gas supply (optional gas and steam pipes are available).

The vertical 3.5 inch Model Steam Engine Boiler has been professionally manufactured to the highest standards. The manufacturer is a leading provider of model steam boilers in the United Kingdom.

The model live steam engine boiler is a vertical centre flue boiler with high output mesh gas burner. The vertical orientation minimises floor space requirements compared to horizontal boilers. It can be used generally to power our single cylinder engines and also for marine applications/boats. Mounting is using 2 M3 screws in the base.

The price includes the boiler fittings (safety valve, water level gauge, pressure gauge and steam outlet valve) and gas burner/Injector.

All boilers are fully assembled, tested by the manufacturer and come with a Boiler Test Certificate and instructions.

Optional extras include gas canister regulator and pipe and ready made copper steam pipe (with connector for specific engine).


  • Boiler diameter 3 1/2"
  • Boiler height 5 1/2"
  • Overall height 10 1/2"
  • Working pressure 40psi max
  • Test pressure 90psi
  • Boiler fill clack bush 1/4" x 40tpi
  • Outlet valve 1/4" x 40tpi
  • 2 additional outlet valve bushes 1/4" x 40tpi
  • Gas pipe connector 1/4" x 40tpi
  • Removable chimney

NOTE: The model steam engines and boilers are NOT children’s toys and should not be assembled or operated by children unless under close supervision of an adult.

3.5 inch Vertical Boiler Complete

  • Product Code: WV3B
  • Availability: Out Of Stock
  • £425.00

Available Options

Tags: 3.5 inch Vertical Boiler Complete